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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-Q

(Mark One)

ý	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 29, 2003

or

o	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission file number:

SILICON LABORATORIES INC.
(Exact name of registrant as specified in its charter)

Delaware			74-2793174
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)

4635 Boston Lane, Austin, Texas				78735
(Address of principal executive offices)				(Zip Code)

(512) 416-8500
(Registrant’s telephone number, including area code)


(Former name, former address and former fiscal year, if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Sections 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. ý Yes o No

Indicate by check mark whether the registrant is an accelerated filer (as defined in Exchange Act Rule 12b-2).ý Yes o No

APPLICABLE ONLY TO ISSUERS INVOLVED IN BANKRUPTCY
PROCEEDINGS DURING THE PRECEDING FIVE YEARS:

Indicate by check mark whether the registrant has filed all documents and reports required to be filed by Sections 12, 13 or 15(d) of the Securities Exchange Act of 1934 subsequent to the distribution of securities under a plan confirmed by a court.

¨ Yes ¨ No

APPLICABLE ONLY TO CORPORATE ISSUERS:

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

As of April 8, 2003, 49,022,495 shares of common stock of Silicon Laboratories Inc. were outstanding.

			PAGE NUMBER
PART I.		FINANCIAL INFORMATION

	ITEM 1	Financial Statements:

		Condensed Consolidated Balance Sheets at March 29, 2003 and December 28, 2002	3

		Condensed Consolidated Statements of Operations for the three months ended March 29, 2003 and March 30, 2002	4

		Condensed Consolidated Statements of Cash Flows for the three months ended March 29, 2003 and March 30, 2002	5

		Notes to Condensed Consolidated Financial Statements	6

	ITEM 2	Management’s Discussion and Analysis of Financial Condition and Results of Operations	9

	ITEM 3	Quantitative and Qualitative Disclosures About Market Risk	30

	ITEM 4	Controls and Procedures	30

*PART II.*		*OTHER INFORMATION*

	ITEM 1	Legal Proceedings	30

	ITEM 2	Changes in Securities and Use of Proceeds	31

	ITEM 3	Defaults Upon Senior Securities	31

	ITEM 4	Submission of Matters to a Vote of Securities Holders	31

	ITEM 5	Other Information	31

	ITEM 6	Exhibits and Reports on Form 8-K	31

CAUTIONARY STATEMENT

EXCEPT FOR THE HISTORICAL FINANCIAL INFORMATION CONTAINED HEREIN, THE MATTERS DISCUSSED IN THIS REPORT ON FORM 10-Q (AS WELL AS DOCUMENTS INCORPORATED HEREIN BY REFERENCE) MAY BE CONSIDERED “FORWARD-LOOKING” STATEMENTS WITHIN THE MEANING OF SECTION 27A OF THE SECURITIES ACT OF 1933, AS AMENDED, AND SECTION 21E OF THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED. SUCH FORWARD-LOOKING STATEMENTS INCLUDE DECLARATIONS REGARDING THE INTENT, BELIEF OR CURRENT EXPECTATIONS OF SILICON LABORATORIES AND ITS MANAGEMENT AND MAY BE SIGNIFIED BY THE WORDS “EXPECTS,” “ANTICIPATES,” “INTENDS,” “BELIEVES” OR SIMILAR LANGUAGE. YOU ARE CAUTIONED THAT ANY SUCH FORWARD-LOOKING STATEMENTS ARE NOT GUARANTEES OF FUTURE PERFORMANCE AND INVOLVE A NUMBER OF RISKS AND UNCERTAINTIES. ACTUAL RESULTS COULD DIFFER MATERIALLY FROM THOSE INDICATED BY SUCH FORWARD-LOOKING STATEMENTS. FACTORS THAT COULD CAUSE OR CONTRIBUTE TO SUCH DIFFERENCES INCLUDE THOSE DISCUSSED UNDER “FACTORS AFFECTING FUTURE OPERATING RESULTS” AND ELSEWHERE IN THIS REPORT, AS WELL AS THOSE DISCUSSED IN OUR ANNUAL REPORT ON FORM 10-K FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JANUARY 22, 2003. SILICON LABORATORIES DISCLAIMS ANY INTENTION OR OBLIGATION TO UPDATE OR REVISE ANY FORWARD-LOOKING STATEMENTS, WHETHER AS A RESULT OF NEW INFORMATION, FUTURE EVENTS OR OTHERWISE.

PART I: FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

SILICON LABORATORIES INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(IN THOUSANDS, EXCEPT PER SHARE DATA)

	MARCH 29, 2003			DECEMBER 28, 2002
	(UNAUDITED)
ASSETS
Current assets:
Cash and cash equivalents	$	82,306		$	73,950
Short-term investments	48,989			41,216
Accounts receivable, net of allowance for doubtful accounts of $945 at March 29, 2003 and December 28, 2002	22,993			27,501
Inventories	13,598			13,319
Deferred income taxes	4,921			4,921
Prepaid expenses and other	1,706			1,841
Total current assets	174,513			162,748
Property, equipment and software, net	28,888			29,781
Goodwill and other intangible assets	410			450
Other assets	5,191			4,086
Total assets	$	209,002		$	197,065

LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	31,874		$	13,272
Accrued expenses	8,862			8,505
Deferred income on shipments to distributors	6,177			10,147
Income taxes payable	4,385			8,470
Total current liabilities	51,298			40,394
Other long-term obligations	949			949
Total liabilities	52,247			41,343

Commitments and contingencies

Stockholders’ equity:
Common stock—$.0001 par value; 250,000 shares authorized; 49,015 and 48,904 shares issued and outstanding at March 29, 2003 and December 28, 2002, respectively	5			5
Additional paid-in capital	174,840			174,088
Stockholder notes receivable	(178		)	(228		)
Deferred stock compensation	(11,819		)	(13,092		)
Retained earnings (deficit)	(6,093		)	(5,051		)
Total stockholders’ equity	156,755			155,722
Total liabilities and stockholders’ equity	$	209,002		$	197,065

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONDENSED CONSOLIDATED FINANCIAL STATEMENTS.

SILICON LABORATORIES INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(UNAUDITED)

(IN THOUSANDS, EXCEPT PER SHARE DATA)

	THREE MONTHS ENDED
	MARCH 29, 2003			MARCH 30, 2002
Revenues	$	63,753		$	28,849
Cost of revenues	43,578			12,094
Gross profit	20,175			16,755
Operating expenses:
Research and development	9,530			8,047
Selling, general and administrative	9,998			6,676
Amortization of deferred stock compensation	1,266			1,305
Operating expenses	20,794			16,028
Operating income (loss)	(619		)	727
Other income (expense):
Interest income	344			458
Interest expense	—			(151		)
Other income (expense)	(663		)	—
Income (loss) before income taxes	(938		)	1,034
Provision for income taxes	105			678

Net income (loss)	$	(1,043	)	$	356
Net income (loss) per share:
Basic	$	(0.02	)	$	0.01
Diluted	$	(0.02	)	$	0.01
Weighted-average common shares outstanding:
Basic	48,215			47,129
Diluted	48,215			51,283

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONDENSED CONSOLIDATED FINANCIAL STATEMENTS.

SILICON LABORATORIES INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(UNAUDITED)

(IN THOUSANDS)

	THREE MONTHS ENDED
	MARCH 29, 2003			MARCH 30, 2002
OPERATING ACTIVITIES

Net income (loss)	$	(1,043	)	$	356
Adjustments to reconcile net income (loss) to cash provided by operating activities:
Depreciation and amortization of property, equipment and software	3,097			2,283
Amortization of other intangible assets and other assets	383			24
Amortization of deferred stock compensation	1,266			1,305
Amortization of note/lease end-of-term interest payments	—			14
Equity investment loss	663			—
Income tax benefit from exercise of stock options	237			173
Changes in operating assets and liabilities:
Accounts receivable	4,508			(2,863		)
Inventories	(279		)	(725		)
Prepaid expenses and other	171			(958		)
Income tax receivable	—			505
Accounts payable	17,365			3,949
Accrued expenses	357			1,491
Deferred income on shipments to distributors	(3,970		)	274
Income taxes payable	(4,085		)	—
Net cash provided by operating activities	18,670			5,828

INVESTING ACTIVITIES

Purchases of short-term investments	(40,996		)	(17,830		)
Maturities of short-term investments	33,183			6,983
Purchases of property, equipment and software	(1,611		)	(3,223		)
Purchases of other assets	(1,463		)	—
Net cash used in investing activities	(10,887		)	(14,070		)

FINANCING ACTIVITIES

Payments on long-term debt	—			(413		)
Payments on capital leases	—			(116		)
Proceeds from repayment of stockholder notes	51			182
Net proceeds from exercises of stock options	522			633
Net cash provided by financing activities	573			286
Increase (decrease) in cash and cash equivalents	8,356			(7,956		)
Cash and cash equivalents at beginning of period	73,950			82,346
Cash and cash equivalents at end of period	$	82,306		$	74,390

SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Interest paid	$	—		$	80
Income taxes paid	$	3,917		$	—

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONDENSED CONSOLIDATED FINANCIAL STATEMENTS.

SILICON LABORATORIES INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

MARCH 29, 2003

1. SIGNIFICANT ACCOUNTING POLICIES

BASIS OF PRESENTATION

The condensed consolidated financial statements, other than the condensed consolidated balance sheet as of December 28, 2002, included herein are unaudited; however, they contain all normal recurring accruals and adjustments which, in the opinion of management, are necessary to present fairly the condensed consolidated financial position of Silicon Laboratories Inc. and its subsidiaries (collectively, the “Company”) at March 29, 2003, the condensed consolidated results of its operations for the three months ended March 29, 2003 and March 30, 2002 and the condensed consolidated statements of cash flows for the three months ended March 29, 2003 and March 30, 2002. All intercompany accounts and transactions have been eliminated. The condensed consolidated results of operations for the three months ended March 29, 2003 are not necessarily indicative of the results to be expected for the full year.

The accompanying unaudited condensed consolidated financial statements do not include certain footnotes and financial presentations normally required under accounting principles generally accepted in the United States. Therefore, these condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto for the year ended December 28, 2002, included in the Company’s Form 10-K filed with the Securities and Exchange Commission (SEC) on January 22, 2003.

INVENTORIES

Inventories are stated at the lower of cost, determined using the first-in, first-out method, or market. Inventories consist of the following (in thousands):

	MARCH 29, 2003		DECEMBER 28, 2002
Work in progress	$	6,732	$	7,291
Finished goods	6,866		6,028
	$	13,598	$	13,319

OTHER COMPREHENSIVE INCOME (LOSS)

There were no material differences between net income (loss) and comprehensive income (loss) during any of the periods presented.

RECENT ACCOUNTING PRONOUNCEMENTS

In June 2002 the Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standards (SFAS) No. 146, ACCOUNTING FOR COSTS ASSOCIATED WITH EXIT OR DISPOSAL ACTIVITIES. SFAS No. 146 requires companies to recognize costs associated with exit or disposal activities when they are incurred rather than at the date of commitment to an exit or disposal plan. This statement is effective for exit or disposal activities initiated after December 31, 2002. The adoption of SFAS No. 146 did not have a material impact on the Company’s results of operations or financial position.

In November 2002, the FASB issued Interpretation No. 45 (FIN 45), GUARANTOR’S ACCOUNTING AND DISCLOSURE REQUIREMENTS FOR GUARANTEES, INCLUDING INDIRECT GUARANTEES OF INDEBTENESS OF OTHERS, which is effective for financial statements of interim or annual periods ending after December 15, 2002. The Interpretation requires certain guarantees to be recorded at fair value and also introduces new disclosure requirements. The adoption of FIN 45 did not have a material impact on the Company’s results of operations or financial position and did not require the Company to make any additional disclosures.

SILICON LABORATORIES INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

(UNAUDITED)

In December 2002, the FASB issued SFAS No. 148, ACCOUNTING FOR STOCK-BASED COMPENSATION — TRANSITION AND DISCLOSURE, AN AMENDMENT OF FASB STATEMENT NO. 123. This Statement amends FASB Statement No. 123, ACCOUNTING FOR STOCK-BASED COMPENSATION, to provide alternative methods of transition for an entity that voluntarily changes to the fair value based method of accounting for stock-based employee compensation. It also amends the disclosure provisions of that Statement to require prominent disclosure about the effects on reported net income (loss) of an entity’s accounting policy decisions with respect to stock-based employee compensation. Finally, this Statement amends Accounting Principles Board Opinion (APB) Opinion No. 28, INTERIM FINANCIAL REPORTING, to require disclosure about those effects in interim financial information. Since the Company is continuing to account for stock-based compensation according to APB 25, adoption of SFAS No. 148 requires the Company to provide prominent disclosures about the effects of SFAS No. 123 on reported income (loss) in annual and interim financial statements.

In January 2003, the FASB issued Interpretation No. 46 (FIN 46), CONSOLIDATION OF VARIABLE INTEREST ENTITIES. FIN 46 requires that if an entity has a controlling financial interest in a variable interest entity, the assets, liabilities and results of activities of the variable interest entity should be included in the consolidated financial statements of the entity. FIN 46 is effective immediately for all new variable interest entities created or acquired after January 31, 2003. For variable interest entities created or acquired prior to February 1, 2003, the provisions of FIN 46 must be applied for the first interim or annual period beginning after June 15, 2003. The Company does not believe that the adoption of FIN 46 will have a material impact on its results of operations or financial position.

EARNINGS PER SHARE

The following table sets forth the computation of basic and diluted net income per share (in thousands, except per share data):

	THREE MONTHS ENDED
	MARCH 29, 2003			MARCH 30, 2002
Net income (loss)	$	(1,043	)	$	356
Basic:
Weighted-average shares of common stock outstanding	48,986			48,708
Weighted-average shares of common stock subject to repurchase	(771		)	(1,579		)
Shares used in computing basic net income (loss) per share	48,215			47,129

Effect of dilutive securities:
Weighted-average shares of common stock subject to repurchase	—			1,386
Stock options	—			2,768
Shares used in computing diluted net income (loss) per share	48,215			51,283

Basic net income (loss) per share	$	(0.02	)	$	0.01
Diluted net income (loss) per share	$	(0.02	)	$	0.01

Diluted shares used in calculating net income (loss) per share for the three months ended March 29, 2003 exclude 2,705,000 shares due to the Company’s net loss for the period. Further, approximately 1,955,000 and 900,000 weighted-average dilutive potential shares have been excluded for the three months ended March 29, 2003 and March 30, 2002, respectively, as the exercise price of the underlying stock options exceeded the average market price of the stock during the respective periods.

SILICON LABORATORIES INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

(UNAUDITED)

2. SEGMENT REPORTING

The Company has one operating segment, mixed-signal communication integrated circuits (ICs), consisting of eight product lines. The Company’s chief operating decision maker is considered to be the Chief Executive Officer and Chairman of the Board. The chief operating decision maker allocates resources and assesses performance of the business and other activities at the operating segment level.

3. EQUITY INVESTMENT IN A NON-PUBLICLY TRADED COMPANY

During the first three months of fiscal 2003, the Company recorded an equity investment loss of $0.4 million related to its share of the operating losses of ASIC Design Services, Inc (ADS). In addition, the Company performed an evaluation of the market viability associated with the product under development by ADS and decided against making any additional future investments in ADS. As a result of this evaluation, the Company determined that its remaining investment balance in ADS was impaired and wrote off an additional $0.3 million. These losses are included under the caption other income (expense) in the statement of operations.

4. STOCK-BASED COMPENSATION

The following table illustrates the effect on net income and earnings per share if the Company had applied the fair value recognition provisions of SFAS No. 123 (in thousands, except per share data):

	THREE MONTHS ENDED
	MARCH 29, 2003			MARCH 30, 2002
Net income (loss) - as reported	$	(1,043	)	$	356
Total stock-based compensation cost, net of related tax effects included in the determination of net income as reported	1,266			1,305
The stock-based employee compensation cost, net of related tax effects, that would have been included in the determination of net income if the fair value based method had been applied to all awards	(7,126		)	(5,638		)
Pro forma net income (loss)	$	(6,903	)	$	(3,977	)

Earnings per share
Basic - as reported	$	(0.02	)	$	0.01
Basic - pro forma	$	(0.14	)	$	(0.08	)

Diluted - as reported	$	(0.02	)	$	0.01
Diluted - pro forma	$	(0.14	)	$	(0.08	)

5. COMMITMENTS AND CONTINGENCIES

The Company is involved in various legal proceedings that have arisen in the normal course of business. While the ultimate results of these matters cannot be predicted with certainty, management does not expect them to have a material adverse effect on the consolidated financial position or results of operations.

On August 7, 2001, TDK Semiconductor Corporation (TDK) commenced a lawsuit against the Company for alleged willful infringement by its direct access arrangement (DAA) products of a TDK-held patent. TDK’s complaint seeks unspecified treble damages, costs and attorneys’ fees, and an injunction. On September 27, 2001, the Company served and filed an answer to TDK’s complaint, in which the Company denied infringement and asserted that TDK’s patent is invalid. On March 27, 2002, the Company filed an amended answer and counterclaims in which the Company claimed that the TDK-held patent is unenforceable due to inequitable conduct and asserted counterclaims seeking a declaration that the TDK-held patent is invalid, not infringed and unenforceable. On November 6, 2002, a motion for summary judgment for non-infringement was brought by the Company before the U.S. District Court, Central District of California. The court refused to grant the Company’s request for a summary judgment that it

SILICON LABORATORIES INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

(UNAUDITED)

did not infringe TDK’s patent as a matter of law. On January 6, 2003, the court extended discovery through July 3, 2003, set a final date for all summary judgment motions of August 4, 2003, and extended the trial date to November 2003. The Company and TDK entered into active settlement negotiations during the second half of the most recent quarter. As of March 29, 2003, no agreement had been reached between the two parties. See Note 6 - Subsequent Event.

On December 6, 2001, a class action complaint for violations of U.S. federal securities laws was filed in the United States District Court for the Southern District of New York against the Company, four of its officers individually and the three investment banking firms who served as representatives of the underwriters in connection with the Company’s initial public offering of common stock which became effective on March 23, 2000. On April 19, 2002, a Consolidated Amended Complaint, which is now the operative complaint, was filed in the same court. The complaint alleges that the registration statement and prospectus for the Company’s initial public offering did not disclose that (1) the underwriters solicited and received additional, excessive and undisclosed commissions from certain investors, and (2) the underwriters had agreed to allocate shares of the offering in exchange for a commitment from the customers to purchase additional shares in the aftermarket at pre-determined higher prices. The action seeks damages in an unspecified amount and is being coordinated with approximately 300 other nearly identical actions filed against other companies. On July 15, 2002, the Company moved to dismiss all claims against it and the individual defendants. A court order dated October 9, 2002 dismissed without prejudice numerous individual defendants, including the four officers of the Company who had been named individually. On February 19, 2003, the Court denied the motion to dismiss the complaint against the Company. Many of the parties in these actions, including the Company, are participating in mediation discussions. Although these discussions are underway, there are no assurances that such discussions will result in any meaningful progress towards an acceptable settlement. The Company intends to vigorously contest this case, and is unable at this time to determine whether the outcome of the litigation will have a material impact on its results of operations or financial condition in any future period.

6. SUBSEQUENT EVENT

PATENT INFRINGEMENT LITIGATION SETTLEMENT

On April 1, 2003, the Company settled the patent infringement lawsuit brought against us by TDK Semiconductor Corporation. Under the terms of the settlement agreement, TDK agreed to release all claims covered by the lawsuit. In addition, TDK granted to the Company irrevocable, royalty free licenses for the patent covered by the lawsuit and certain other related patents. In exchange, the Company agreed to make a one-time payment of $17 million to TDK in April 2003 and release all counterclaims covered by the lawsuit. Based on a valuation study performed by an independent appraiser, the Company recorded $15.3 million of the settlement amount as an expense during the first quarter of fiscal 2003 and the remaining $1.7 million will be recorded during the second quarter of fiscal 2003 for the value associated with the licensed patents and will be amortized over the remaining life of the technology.

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

THE FOLLOWING DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS SHOULD BE READ IN CONJUNCTION WITH THE CONDENSED CONSOLIDATED FINANCIAL STATEMENTS AND RELATED NOTES THERETO INCLUDED ELSEWHERE IN THIS REPORT ON FORM 10-Q. THIS DISCUSSION CONTAINS FORWARD-LOOKING STATEMENTS. PLEASE SEE THE “CAUTIONARY STATEMENT” ABOVE AND “FACTORS AFFECTING OUR FUTURE OPERATING RESULTS” BELOW FOR A DISCUSSION OF THE UNCERTAINTIES, RISKS AND ASSUMPTIONS ASSOCIATED WITH THESE STATEMENTS. OUR FISCAL YEAR-END FINANCIAL REPORTING PERIODS ARE A 52- OR 53- WEEK YEAR ENDING ON THE SATURDAY CLOSEST TO DECEMBER 31ST. FISCAL YEAR 2003 WILL HAVE 53 WEEKS WITH THE EXTRA WEEK OCCURING IN THE FOURTH QUARTER OF THIS YEAR. OUR FIRST QUARTER OF FISCAL YEAR 2003 ENDED MARCH 29, 2003. OUR FIRST QUARTER OF FISCAL YEAR

2002 ENDED MARCH 30, 2002. ALL OF THE QUARTERLY PERIODS REPORTED IN THIS QUARTERLY REPORT ON FORM 10-Q HAD THIRTEEN WEEKS.

OVERVIEW

We design and develop proprietary, analog-intensive, mixed-signal integrated circuits (ICs) for the communications industry. Our innovative ICs can dramatically reduce the cost, size and system power requirements of the products that our customers sell to consumers. We currently offer ICs that can be incorporated into communications devices, such as wireless phones and modems, as well as cable and satellite set-top boxes, residential communication gateways for cable or DSL, and optical network equipment. Customers during fiscal 2002 or the first three months of fiscal 2003 included Agere Systems, Ambit, Broadcom, Echostar, PC-TEL, Sagem, Samsung, Smart Link, Texas Instruments, Thomson and Wavecom.

Our company was founded in 1996. Our business has grown rapidly since our inception, as reflected by our employee headcount, which increased to 383 at March 29, 2003, from 364 employees at the end of fiscal 2002, 279 employees at the end of fiscal 2001, 256 at the end of fiscal 2000, and 148 at the end of fiscal 1999. As a “fabless” semiconductor company, we rely on third-party semiconductor fabricators to manufacture the silicon wafers that reflect our IC designs. Each wafer contains numerous die, which are cut from the wafer to create a chip for an IC. We also rely on third-party assemblers to assemble and package these die prior to final product testing and shipping.

We offer numerous mixed-signal communication ICs across eight product areas. We commenced research and development for our first IC product, the DAA, in October 1996. We introduced our DAA product in the first quarter of fiscal 1998, and first received acceptance of this product for inclusion in a customer’s device, which we refer to as a design win, in March 1998. The first commercial shipment of our DAA product was made in April 1998. Based on the success of our family of DAA products, we achieved profitability in the fourth quarter of fiscal 1998. In 1999, we introduced a voice codec product, an ISOmodem product and our radio frequency (RF) synthesizer product. In 2000, we introduced our ProSLIC product and a clock and data recovery product suitable for Synchronous Optical Network (SONET) physical layer applications. In 2001, we introduced several products, including a Global System for Mobile Communications (GSM) transceiver chipset, a digital subscriber line analog front end and added several new optical networking products. In 2002, we expanded our existing product areas by introducing the third-generation silicon DAA product family, Aero+ Transceiver and Wideband Dual ProSLIC. During the first three months of fiscal 2003, our wireless products were responsible for more than half of our revenues. Although we have made progress in diversifying our revenue across a variety of product areas, we expect to continue to be dependent on our wireless products for a major portion of our future sales as, and to the extent that, those products continue to be widely adopted by GSM handset manufacturers.

Many of our end customers purchase products indirectly from us through distributors and contract manufacturers. An end customer purchasing through a contract manufacturer typically instructs such contract manufacturer to obtain our products and incorporate such products with other components for sale by such contract manufacturer to the end customer. Although we actually sell the products to, and are paid by, the distributors and contract manufacturers, we refer to such end customer as our customer. During the first three months of fiscal 2003, one end customer, Samsung, represented 21% of our revenues. No other single end customer accounted for more than 10% of our revenues during the first three months of 2003. Two of our distributors, Uniquest and Edom Technology, each selling products to several customers in Asia, represented 16% and 15% of our revenues during the first three months of 2003, respectively. No other distributor accounted for more than 10% of our revenues during the first three months of 2003. During the first three months of 2003, Samsung changed from a customer purchasing through a distributor to a customer purchasing directly from us.

The percentage of our revenues derived from customers located outside of the United States was 79% in fiscal 2002, 66% in fiscal 2001, and 21% in fiscal 2000. All of our revenues to date have been denominated in U.S. dollars. We believe that a large percentage of our revenues will continue to be derived from customers outside of the United States as our products receive acceptance in international markets.

The sales cycle for the test and evaluation of our ICs can range from 1 month to 12 months or more. An additional 3 to 6 months or more may be required before a customer ships a significant volume of devices that incorporate our ICs. Due to this lengthy sales cycle, we may experience a significant delay between incurring expenses for research and development and selling, general and administrative efforts, and the generation of corresponding sales, if any. Consequently, if sales in any quarter do not occur when expected, expenses and inventory levels could be disproportionately high, and our operating results for that quarter and, potentially, future quarters would be adversely affected. Moreover, the amount of time between initial research and development and commercialization of a product, if ever, generally is substantially longer than the sales cycle for the product. Accordingly, if we incur substantial research and development costs without developing a commercially successful product, our operating results, as well as our growth prospects, could be adversely affected.

Our limited operating history and rapid growth across our product areas makes it difficult for us to estimate the impact of seasonal factors on our business. Because many of our ICs are designed for use in consumer products such as PCs and wireless telephones, we expect that the demand for our products will be subject to seasonal demand resulting in increased sales in the third and fourth quarters of each year when customers place orders to meet holiday demand.

SUBSEQUENT EVENT - PATENT INFRINGEMENT LITIGATION SETTLEMENT

On April 1, 2003, we settled the patent infringement lawsuit brought against us by TDK Semiconductor Corporation (TDK). Under the terms of the settlement agreement, TDK agreed to release all claims covered by the lawsuit. In addition, TDK granted to us irrevocable, royalty free licenses for the patent covered by the lawsuit and certain other related patents. In exchange, we agreed to make a one-time payment of $17 million to TDK in April 2003 and release all counterclaims covered by the lawsuit. Based on a valuation study performed by an independent appraiser, we recorded $15.3 million of the settlement amount as an expense during the first quarter of fiscal 2003 and the remaining $1.7 million will be recorded during the second quarter of fiscal 2003 as the value associated with the licensed patents and will be amortized over the remaining life of the associated technology.

The following describes the line items set forth in our condensed consolidated statements of operations:

REVENUES. Revenues are generated principally by sales of our ICs. We recognize revenue upon the transfer of title, which generally occurs upon shipment to our customers. Revenues are deferred on shipments to distributors until they are resold by such distributors to end customers. Our products typically carry a one-year replacement warranty. Replacements have been insignificant to date. Our revenues are subject to variation from period to period due to the volume of shipments made within a period and the prices we charge for our products. The vast majority of our revenues was negotiated at prices that reflect a discount from the list prices for our products. These discounts are made for a variety of reasons, including to establish a relationship with a new customer, as an incentive for customers to purchase products in larger volumes, to provide profit margin to our distributors who resell our products or in response to competition. In addition, as a product matures, we expect that the average selling price for our products will decline due to the greater availability of competing products. The sales of our wireless products into the highly competitive GSM handset market are expected to comprise a larger percentage of our revenue, resulting in increased downward pressure on our average selling prices for individual products. Our ability to increase revenues in the future is dependent on increased demand for our established products and our ability to ship larger volumes of those products in response to such demand, as well as our ability to develop new products and subsequently achieve customer acceptance of newly introduced products.

COST OF REVENUES. Cost of revenues includes the cost of purchasing finished silicon wafers processed by independent foundries; costs associated with assembly, test and shipping of those products; costs of personnel and equipment associated with manufacturing support, logistics and quality assurance; costs of software royalties and amortization of purchased software and other

intellectual property license costs; an allocated portion of our occupancy costs; allocable depreciation of testing equipment and leasehold improvements; and settlement costs associated with the TDK patent infringement lawsuit. Generally, we depreciate equipment over four years on a straight line basis and leasehold improvements over the shorter of the estimated useful life or the applicable lease term. Recently introduced products tend to have higher cost of revenues per unit due to initially low production volumes required by our customers and higher costs associated with new package variations. Generally, as production volumes for a product increase, unit production costs tend to decrease as our yields improve and our semiconductor fabricators, assemblers and test operations achieve greater economies of scale for that product. Additionally, the cost of wafer procurement, which is a significant component of cost of goods sold, varies cyclically with overall demand for semiconductors and availability of supply from our foundries.

RESEARCH AND DEVELOPMENT. Research and development expense consists primarily of compensation and related costs of employees engaged in research and development activities and the related new product mask and wafer costs, external consulting and services costs, as well as an allocated portion of our occupancy costs for such operations. We depreciate our research and development equipment over four years and amortize our purchased software from computer-aided design tool vendors over four years. Development activities include the design of new products and creation of new product masks and wafers and test methodologies to ensure compliance with required specifications.

SELLING, GENERAL AND ADMINISTRATIVE. Selling, general and administrative expense consists primarily of personnel-related expenses, related allocable portion of our occupancy costs, sales commissions to independent sales representatives, professional fees, directors’ and officers’ liability insurance, patent litigation legal fees, other promotional and marketing expenses, and reserves for bad debt. Write offs of uncollectible accounts have been insignificant to date.

AMORTIZATION OF DEFERRED STOCK COMPENSATION. In connection with the grant of stock options and direct issuances of stock to our employees, we record deferred stock compensation, representing, for accounting purposes, the difference between the exercise price of option grants, or the issuance price of direct issuances of stock, as the case may be, and the fair value of our common stock at the time of such grants or issuances. The deferred stock compensation is amortized over the vesting period of the applicable options or shares, generally five to eight years. The amortization of deferred stock compensation is recorded as an operating expense.

INTEREST INCOME. Interest income reflects interest earned on average cash, cash equivalents and investment balances. We may from time to time elect to invest in tax-advantaged short-term investments yielding lower nominal interest proceeds.

INTEREST EXPENSE. Interest expense consists of interest on our long-term debt and capital lease obligations.

OTHER INCOME (EXPENSE). Other income (expense) reflects our share of losses in and impairment reserves related to our equity investment, ASIC Design Services, Inc. (ADS) and the gain on the disposal of fixed assets.

PROVISION FOR INCOME TAXES. We accrue a provision for federal and state income tax at the applicable statutory rates adjusted for non-deductible expenses, research and development tax credits and interest income from tax-advantaged short-term investments.

RESULTS OF OPERATIONS

The following table sets forth our condensed consolidated statement of operations data as a percentage of revenues for the periods indicated:

	THREE MONTHS ENDED
	MARCH 29, 2003		MARCH 30, 2002

Revenues	100.0	%	100.0	%
Cost of revenues	68.4		41.9
Gross profit	31.6		58.1

Operating expenses:
Research and development	14.9		27.9
Selling, general and administrative	15.7		23.1
Amortization of deferred stock compensation	2.0		4.5
Operating expenses	32.6		55.5

Operating income (loss)	(1.0	)	2.6

Other income and (expenses):
Interest income	0.6		1.6
Interest expense	—		(0.6	)
Other income (expense)	(1.0	)	—
Income (loss) before income taxes	(1.4	)	3.6
Provision for income taxes	0.2		2.4
Net income (loss)	(1.6	)%	1.2	%

COMPARISON OF THE THREE MONTHS ENDED MARCH 29, 2003 TO THE THREE MONTHS ENDED MARCH 30, 2002.

REVENUES. Revenues for the three months ended March 29, 2003 were $63.8 million, an increase of $35.0 million, or 121%, from revenues of $28.8 million in the three months ended March 30, 2002. The increase was primarily attributable to significant growth in the volume of sales for our wireless products, including the Aero Transceiver, reflecting a growing number of customers adopting these products into their offerings. During the first three months of fiscal 2003, we experienced normal decreases in the average selling prices for certain products. However, these price decreases were mainly offset by the significant increases in sales volumes for our products and to a lesser extent the introduction of higher priced next generation products and product extensions.

GROSS PROFIT. Gross profit for the three months ended March 29, 2003 was $20.2 million, or 31.6% of revenues, an increase of $3.4 million, as compared with gross profit of $16.8 million, or 58.1% of revenues, in the three months ended March 30, 2002. The increase in gross profit dollars was primarily due to the substantial increase in sales volume offset to a large extent by a $15.3 million expense, or 24.0% of revenues, relating to the patent infringement lawsuit filed against us by TDK. The decrease in gross margin percentage was primarily due to the charge related to the patent infringement lawsuit and to a lesser extent, a greater portion of our sales being comprised of our lower margin wireless products which have lower average selling prices and higher material costs than our other products.

RESEARCH AND DEVELOPMENT. Research and development expense for the three months ended March 29, 2003 was $9.5 million, or 14.9% of revenues, which reflected an increase of $1.5 million, or 18.4%, as compared with research and development expense of $8.0 million, or 27.9% of revenues, for the three months ended March 30, 2002. The increase in the dollar amount of research and development expense was principally due to increased staffing and associated costs to pursue new product development opportunities. As a percentage of revenues, research and development expense decreased significantly due to the substantial increase in revenues during the first three months of fiscal 2003. We expect that research and development expense will increase in absolute dollars in future periods as we continue to increase our staffing and associated costs to pursue additional new product development opportunities, and may fluctuate as a percentage of revenues due to changes in sales volume and the timing of certain expensive items related to new product development initiatives, such as engineering mask and wafer costs.

SELLING, GENERAL AND ADMINISTRATIVE. Selling, general and administrative expense for the three months ended March 29, 2003 was $10.0 million, or 15.7% of revenues, which reflected an increase of $3.3 million, or 49.8%, as compared to selling, general and administrative expense of $6.7 million, or 23.1% of revenues, in the three months ended March 30, 2002. The increase in the dollar amount of selling, general and administrative expense was principally attributable to increased staffing and associated costs, legal fees in connection with patent litigation and sales commissions associated with our higher revenues. We expect our legal expenses to decrease significantly during the second quarter due to the April 1, 2003 settlement of the patent infringement lawsuit filed against us by TDK. Nevertheless, we expect that selling, general and administrative expense will increase in absolute dollars in future periods as we expand our sales channels, marketing efforts and administrative infrastructure. In addition, we expect selling, general and administrative expense to fluctuate as a percentage of revenues because of (1) continued spending on international infrastructure and personnel to provide local sales and technical support to our foreign customers; (2) fluctuating usage of advertising to promote our products and, in particular, our newly introduced products; and (3) potential significant variability in our future sales volume.

AMORTIZATION OF DEFERRED STOCK COMPENSATION. We recorded deferred stock compensation for the difference between the exercise price of option grants or the issuance price of direct issuances of stock, as the case may be, and the fair value of our common stock at the time of such grants or issuances. We are amortizing this amount over the vesting periods of the applicable options or restricted stock, which resulted in amortization expense of $1.3 million in each of the three months ended March 29, 2003 and March 30, 2002.

INTEREST AND OTHER INCOME. Interest income for the three months ended March 29, 2003 was $0.3 million as compared to $0.5 million for the three months ended March 30, 2002. This decrease was primarily due to lower interest rates on cash and short-term investments balances during the three months ended March 29, 2003.

INTEREST EXPENSE. Interest expense for the three months ended March 29, 2003 was zero as compared to $0.2 million for the three months ended March 30, 2002. The decrease in interest expense was due to the absence of debt and equipment financing during the recent period.

OTHER INCOME (EXPENSE). Other expense in the three months ended March 29, 2003 was $0.7 million, which primarily reflects our share of the losses in our investment in ADS and an impairment charge to write off our remaining investment balance in ADS as a result of our evaluation of the market viability associated with the product under development by ADS and our decision to not make any additional investments in ADS. We did not have any equity investments, and therefore no corresponding losses, during the three month period ending March 30, 2002.

PROVISION FOR INCOME TAXES. Our tax provision rate, excluding the impact of the nondeductible amortization of deferred stock compensation, was 32% for the three months ended March 29, 2003, as compared to 29% for the three months ended March 30, 2002. The tax provision rate differs from the statutory rate due to the impact of research and development tax credits, tax-exempt interest income, state taxes and other permanent items.

LIQUIDITY AND CAPITAL RESOURCES

Our principal sources of liquidity as of March 29, 2003 consisted of $131.3 million in cash, cash equivalents and short-term investments. Our short term investments consist primarily of obligations of municipalities and agencies of the U.S. government that have initial maturities of less than one year. On April 2, 2003, we made a one-time payment of $17 million to settle the patent infringement lawsuit brought against us by TDK.

In addition, we have credit available under a bank credit facility with a revolving line of credit for borrowings and letters of credit of up to the lesser of $5.0 million or 80% of eligible accounts receivable at the bank’s prime lending rate, which was 4.25% as of March 29, 2003. At March 29, 2003, a letter of credit for $0.4 million related to a building lease was outstanding under the revolving line of credit and $4.6 million was available for new borrowings or letters of credit. The bank facility is secured by our

accounts receivable, inventories, capital equipment and all other unsecured assets (excluding intellectual property). The line of credit prohibits the payment of cash dividends and requires the maintenance of tangible net worth and compliance with financial ratios that measure our immediate liquidity and our ongoing ability to pay back our outstanding obligations. We believe we were in compliance with all covenants at March 29, 2003.

Net cash provided by operating activities was $18.7 million during the three months ended March 29, 2003, compared to $5.8 million during the three months ended March 30, 2002. The increase was principally due to revenues generated by a higher volume of sales over a relatively fixed cost structure. Operating cash flows during the three months ended March 29, 2003 reflect our net loss of $1.0 million, as adjusted for non-cash charges (depreciation and amortization and equity investment loss) of $5.6 million, and a net increase in the non-cash components of our working capital of $14.1 million (principally accrued expense related to the patent infringement litigation settlement with TDK.

Net cash used in investing activities was $10.9 million during the three months ended March 29, 2003, compared to net cash used of $14.1 million during the three months ended March 30, 2002. The decrease was principally due to lower net purchases of investments during the most recent quarter. Investing cash flows during the three months ended March 29, 2003 reflect our net purchase of short-term investments of $7.8 million, capital expenditures of $1.6 million, and investment in other assets of $1.5 million.

We anticipate additional capital expenditures of approximately $9 million for fiscal 2003. Additionally, as part of our growth strategy, we will also continue to evaluate opportunities to invest in or acquire other business or technologies that would complement or expand our current offerings, expand the breadth of our markets or enhance our technical capabilities.

Net cash provided by financing activities was $0.6 million during the three months ended March 29, 2003, compared to net cash provided of $0.3 million during the three months ended March 30, 2002. The increase in cash flows from financing activities during the three months ended March 29, 2003 was principally due to the fact that we had no debt or equipment financing obligations during the first quarter.

Our future capital requirements will depend on many factors, including the rate of sales growth, market acceptance of our products, the timing and extent of research and development projects and the expansion of our sales and marketing activities. We believe our existing cash balances and credit facility are sufficient to meet our capital requirements through at least the next 12 months, although we could be required, or could elect, to seek additional funding prior to that time. We may enter into acquisitions or strategic arrangements in the future which also could require us to seek additional equity or debt financing.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

The preparation of financial statements and accompanying notes in conformity with generally accepted accounting principles requires that we make estimates and assumptions that affect the amounts reported. Changes in the facts and circumstances could have a significant impact on the resulting financial statements. We believe the following critical accounting policies affect our more complex judgments and estimates. We also have other policies that we consider to be key accounting policies, such as our policies for revenue recognition, including the deferral of revenues and gross profit on sales to distributors; however, these policies do not meet the definition of critical accounting estimates because they do not generally require us to make estimates or judgments that are difficult or subjective.

Inventory Valuation - We assess the recoverability of inventories through an on-going review of inventory levels in relation to sales history, backlog and forecasts, product marketing plans and product life cycles. To address the difficult, subjective and complex area of judgment in determining appropriate inventory valuation in a consistent manner, we apply a set of methods, assumptions and estimates to arrive at the net inventory amount by completing the following: First, we identify any inventory that has been previously reserved in prior periods. This inventory remains reserved until sold, destroyed or otherwise disposed of. Second, we examine the inventory line items that may have some form of obsolescence due to non-conformance with electrical and mechanical

standards as identified by our quality assurance personnel and provide reserves. Third, the remaining inventory not otherwise identified to be reserved is compared to an assessment of product history and forecasted demand, typically over the last six months and next six months, or actual firm backlog on hand. Finally, an analysis of the result of this methodology is compared against the product life cycle and competitive situations in the marketplace driving the outlook for the consumption of the inventory and the appropriateness of the resulting inventory levels. Demand for our products may fluctuate significantly over time, and actual demand and market conditions may be more or less favorable than those that we project. In the event that actual demand is lower than originally projected, additional inventory write-downs may be required.

Impairment of long-lived assets - We review long-lived assets, including goodwill, fixed assets and purchased intangible assets, for impairment whenever changes in circumstances indicate that the carrying amount of the assets may not be recoverable and record an impairment charge if necessary. Such evaluations compare the carrying amount of an asset to future undiscounted net cash flows expected to be generated by the asset and are significantly impacted by estimates of future prices and volumes for our products, capital needs, economic trends and other factors which are inherently difficult to forecast.

Allowance for doubtful accounts - We evaluate the collectibility of our accounts receivable based on a combination of factors. In circumstances where we are aware of a specific customer’s inability to meet its financial obligations to us, we record a specific allowance to reduce the net receivable to the amount we reasonably believe will be collected. For all other customers, we recognize allowances for doubtful accounts based on a variety of factors including the length of time the receivables are past their contractual due date, the current business environment, and our historical experience. If the financial condition of our customers were to deteriorate or if economic conditions worsened, additional allowances may be required in the future. Accounts receivable write-offs to date have been minimal.

Income Taxes -We are required to estimate income taxes in each of the jurisdictions in which we operate. This process involves estimating the actual current tax liability together with assessing temporary differences in recognition of income (loss) for tax and accounting purposes. These differences result in deferred tax assets and liabilities, which are included in our consolidated balance sheet. We must then assess the likelihood that the deferred tax assets will be recovered from future taxable income (loss) and, to the extent we believe that recovery is not likely, we must establish a valuation allowance against the deferred tax asset. We operate within multiple taxing jurisdictions and are subject to audit in these jurisdictions. These audits can involve complex issues, which may require an extended period of time to resolve and could result in additional assessments of income tax. In our opinion, adequate provisions for income taxes have been made for all years.

RECENT ACCOUNTING PRONOUNCEMENTS

In June 2002 the FASB issued SFAS No. 146, ACCOUNTING FOR COSTS ASSOCIATED WITH EXIT OR DISPOSAL ACTIVITIES. SFAS No. 146 requires companies to recognize costs associated with exit or disposal activities when they are incurred rather than at the date of commitment to an exit or disposal plan. This statement is effective for exit or disposal activities initiated after December 31, 2002. The adoption of SFAS No. 146 did not have a material impact on our results of operations or financial position.

In November 2002, the FASB issued Interpretation No. 45 (FIN 45), GUARANTOR’S ACCOUNTING AND DISCLOSURE REQUIREMENTS FOR GUARANTEES, INCLUDING INDIRECT GUARANTEES OF INDEBTENESS OF OTHERS, which is effective for financial statements of interim or annual periods ending after December 15, 2002. The Interpretation requires certain guarantees to be recorded at fair value and also introduces new disclosure requirements. The adoption of FIN 45 did not have a material impact on our results of operations or financial position and did not require us to make any additional disclosures.

In December 2002, FASB issued SFAS No. 148, ACCOUNTING FOR STOCK-BASED COMPENSATION -TRANSITION AND DISCLOSURE, AN AMENDMENT OF FASB STATEMENT NO. 123. This Statement amends FASB Statement No. 123, ACCOUNTING FOR STOCK-BASED COMPENSATION, to provide alternative methods of transition for an

entity that voluntarily changes to the fair value based method of accounting for stock-based employee compensation. It also amends the disclosure provisions of that Statement to require prominent disclosure about the effects on reported net income (loss) of an entity’s accounting policy decisions with respect to stock-based employee compensation. Finally, this Statement amends APB Opinion No. 28, INTERIM FINANCIAL REPORTING, to require disclosure about those effects in interim financial information. Since we are continuing to account for stock-based compensation according to APB 25, our adoption of SFAS No. 148 requires us to provide prominent disclosures about the effects of SFAS No. 123 on reported income (loss) in annual and interim financial statements.

In January 2003, the FASB issued Interpretation No. 46 (FIN 46), CONSOLIDATION OF VARIABLE INTEREST ENTITIES. FIN 46 requires that if an entity has a controlling financial interest in a variable interest entity, the assets, liabilities and results of activities of the variable interest entity should be included in the consolidated financial statements of the entity. FIN 46 is effective immediately for all new variable interest entities created or acquired after January 31, 2003. For variable interest entities created or acquired prior to February 1, 2003, the provisions of FIN 46 must be applied for the first interim or annual period beginning after June 15, 2003. We do not believe that the adoption of FIN 46 will have a material impact on our results of operations or financial position.

QUALITATIVE AND QUANTITATIVE DISCLOSURE ABOUT MARKET RISK

All of our investments are entered into for other than trading purposes. Our interest income is sensitive to changes in the general level of U.S. interest rates, particularly since the majority of our investments are in short-term instruments. Based on our investment holdings as of March 29, 2003, an immediate 1 percentage point decline in the yield for such instruments would decrease our annual interest income by $1.3 million. We believe that our investment policy is conservative, both in terms of the average maturity of our investments and the credit quality of the investments we hold.

FACTORS AFFECTING OUR FUTURE OPERATING RESULTS

RISKS RELATED TO OUR BUSINESS

WE MAY NOT BE ABLE TO MAINTAIN OUR HISTORICAL GROWTH AND MAY EXPERIENCE SIGNIFICANT PERIOD-TO-PERIOD FLUCTUATIONS IN OUR REVENUES AND OPERATING RESULTS, WHICH MAY RESULT IN VOLATILITY IN OUR STOCK PRICE

Although we have experienced revenue growth in our eight most recent quarterly periods, we may not be able to sustain this growth. We may also experience significant period-to-period fluctuations in our revenues and operating results in the future due to a number of factors, and any such variations may cause our stock price to fluctuate. It is likely that in some future period our operating results will be below the expectations of public market analysts or investors. If this occurs, our stock price may drop, perhaps significantly.

A number of factors, in addition to those cited in other risk factors applicable to our business, may contribute to fluctuations in our revenues and operating results, including:

• the timing and volume of orders received from our customers;

• the rate of acceptance of our products by our customers, including the acceptance of new products we may develop for integration in the products manufactured by such customers, which we refer to as “design wins”;

• the time lag between “design wins” and production orders;

• the demand for, and life cycles of, the products incorporating our ICs;

• the rate of adoption of mixed-signal ICs in the markets we target;

• deferrals of customer orders in anticipation of new products or product enhancements from us or our competitors or other providers of ICs;

• changes in product mix;

• the average selling prices for our products could drop suddenly due to competitive offerings or competitive predatory pricing; and

• the rate at which new markets emerge for products we are currently developing or for which our design expertise can be utilized to develop products for these new markets.

The markets for mobile telephones, personal computers, satellite television set-top boxes and voice over DSL applications are characterized by rapid fluctuations in demand and seasonality which result in corresponding fluctuations in the demand for our wireless and wireline products that are incorporated in such devices. Additionally, the rate of technology acceptance by our customers results in fluctuating demand for our products as customers are reluctant to incorporate a new IC into their products until the new IC has achieved market acceptance. Once a new IC achieves market acceptance, demand for the new IC can quickly accelerate to a point and then level off such that rapid historical growth in sales of a product should not be viewed as indicative of continued future growth. In addition, demand can quickly decline for a product when a new IC product is introduced and receives market acceptance. For example, transceivers that provide some of the functionality provided by our RF Synthesizers have recently been introduced to market by us and our competitors. The introduction of these competing transceivers, including our Aero Transceiver, has resulted in a rapid decline in our sales of RF Synthesizers. Due to the various factors mentioned above, the results of any prior quarterly or annual periods should not be relied upon as an indication of our future operating performance.

WE DEPEND ON A LIMITED NUMBER OF CUSTOMERS FOR A SUBSTANTIAL PORTION OF OUR REVENUES, AND THE LOSS OF, OR A SIGNIFICANT REDUCTION IN ORDERS FROM, ANY KEY CUSTOMER COULD SIGNIFICANTLY REDUCE OUR REVENUES

The loss of any of our key customers, or a significant reduction in sales to any one of them, would significantly reduce our revenues and adversely affect our business. During the first three months of 2003, our ten largest customers accounted for 69% of our revenues. We had one customer, Samsung, which represented 21% of our revenues. No other single customer accounted for more than 10% of our revenues during the first three months of 2003. Two distributors, Uniquest and Edom Technology, each selling to multiple customers in Asia, represented 16% and 15% of our revenues during the first three months of 2003, respectively. Most of the markets for our products are dominated by a small number of potential customers. Therefore, our operating results in the foreseeable future will continue to depend on our ability to affect sales to these dominant customers, as well as the ability of these customers to sell products that incorporate our IC products. In the future, these customers may decide not to purchase our ICs at all, purchase fewer ICs than they did in the past or alter their purchasing patterns, particularly because:

• we do not have any material long-term purchase arrangements with these or any of our other customers;

• substantially all of our sales to date have been made on a purchase order basis, which permits our customers to cancel, change or delay product purchase commitments with little or no notice to us and without penalty; and

• some of our customers have sought or are seeking relationships with our current or potential competitors which may affect our customers’ purchasing decisions.

While we have been the sole supplier of the direct access arrangement, or DAA, ICs used in many of our customers’ soft modem DAA products and have also been a substantial supplier of synthesizers and transceivers to Samsung and other major GSM handset manufacturers, we anticipate that our customers will regularly evaluate alternative sources of supply in the future in order to diversify their supplier base, which would increase their negotiating leverage with us and protect their ability to secure these components. We believe that any expansion of our customers’ supplier bases could have an adverse effect on the prices we are able to charge and volume of product that we are able to supply to our customers, which would negatively affect our revenues and operating results.

WE ARE SUBJECT TO RISKS RELATING TO PRODUCT CONCENTRATION AND LACK OF REVENUE DIVERSIFICATION

We derive a substantial portion of our revenues from a limited number of products, and we expect these products to continue to account for a large percentage of our revenues in the near term. Continued market acceptance of these products, is therefore, critical to our future success. In addition, substantially all of our products that we have sold include technology related to one or more of our issued U.S. patents. If these patents are found to be invalid or unenforceable, our competitors could introduce competitive products that could reduce both the volume and price per unit of our products. Our business, operating results, financial condition and cash flows could therefore be adversely affected by:

• a decline in demand for any of our more significant products including our Aero Transceiver, RF Synthesizer, DAA, ISOmodem or ProSLIC;

• failure of our products to achieve continued market acceptance;

• an improved version of our products being offered by a competitor;

• technological change that we are unable to address with our products; and

• a failure to release enhanced versions of our products on a timely basis and/or the failure of these new products to achieve market acceptance.

We are particularly dependent on sales of our wireless products, which constituted almost half of our total revenues in 2002 and more than half of our total revenues during the first three months of fiscal 2003. If the market for GSM mobile handsets in which these products are incorporated deteriorates, our operating results would be materially and adversely affected.

OUR INABILITY TO MANAGE GROWTH COULD MATERIALLY AND ADVERSELY AFFECT OUR BUSINESS

In recent periods, we have significantly increased the scope of our operations and expanded our workforce from 42 employees at January 2, 1999 to 383 employees at March 29, 2003. This growth has placed, and any future growth of our operations will continue to place, a significant strain on our management personnel, systems and resources. We anticipate that we will need to implement a variety of new and upgraded operational and financial systems, procedures and controls, including the improvement of our accounting and other internal management systems. We also expect that we will need to continue to expand, train, manage and motivate our workforce. All of these endeavors will require substantial management effort. If we are unable to effectively manage our expanding operations, our business could be materially and adversely affected.

IF WE ARE UNABLE TO DEVELOP NEW AND ENHANCED PRODUCTS THAT ACHIEVE MARKET ACCEPTANCE IN A TIMELY MANNER, OUR OPERATING RESULTS AND COMPETITIVE POSITION COULD BE HARMED

Our future success will depend on our ability to reduce our dependence on a few products by developing new ICs and product enhancements that achieve market acceptance in a timely and cost-effective manner. The development of mixed-signal ICs is highly complex, and we occasionally have experienced delays in completing the development and introduction of new products and product enhancements. Successful product development and market acceptance of our products depend on a number of factors, including:

• changing requirements of customers within the communications markets;

• accurate prediction of market requirements;

• timely completion and introduction of new designs;

• timely qualification and certification of our ICs for use in our customers’ products;

• commercial acceptance and volume production of the products into which our ICs will be incorporated;

• availability of foundry, assembly, and test capacity;

• achievement of high manufacturing yields;

• quality, price, performance, power use and size of our products;

• availability, quality, price and performance of competing products and technologies;

• our customer service and support capabilities and responsiveness;

• successful development of our relationships with existing and potential customers;

• changes in technology, industry standards or end-user preferences; and

• cooperation of software partners and semiconductor partners to support our chips within a system.

We cannot provide any assurance that products which we recently have developed or may develop in the future will achieve market acceptance. We have introduced to market or are in development of many ICs. If our recently introduced or other ICs fail to achieve market acceptance, or if we fail to develop new products or if these new products fail to achieve market acceptance, our growth prospects, operating results and competitive position could be adversely affected.

OUR RESEARCH AND DEVELOPMENT EFFORTS ARE FOCUSED ON A LIMITED NUMBER OF NEW TECHNOLOGIES AND PRODUCTS, AND ANY DELAY IN THE DEVELOPMENT, OR ABANDONMENT, OF THESE TECHNOLOGIES OR PRODUCTS BY INDUSTRY PARTICIPANTS, OR THEIR FAILURE TO ACHIEVE MARKET ACCEPTANCE, COULD COMPROMISE OUR COMPETITIVE POSITION

Our ICs are used as components in communications devices in various markets. As a result, we have devoted and expect to continue to devote a large amount of resources to develop products based on new and emerging technologies and standards that will be commercially introduced in the future. Research and development expense for the three months ended March 29, 2003 was $9.5 million, or 14.9% of revenues. A number of large companies in the communications industry are actively involved in the development of these new technologies and standards. Should any of these companies delay or abandon their efforts to develop commercially available products based on new technologies and standards, our research and development efforts with respect to these technologies and standards likely would have no appreciable value. In addition, if we do not correctly anticipate new technologies and standards, or if the products that we develop based on these new technologies and standards fail to achieve market acceptance, our competitors may be better able to address market demand than we would. Furthermore, if markets for these new technologies and standards develop later than we anticipate, or do not develop at all, demand for our products that are currently in development would suffer, resulting in lower sales of these products than we currently anticipate. For example, we have introduced to market the Aero Transceiver product for use in wireless phones operating on the GSM standard. The Aero Transceiver is also compatible with the General Packet Radio Services (GPRS) standard, which we believe is the emerging data communications protocol for GSM based wireless phones. We cannot be certain that these standards will not change, thereby making our products unsuitable or impractical. Additionally, despite the published GSM/GPRS specifications, mobile phone network operators may demand increased performance beyond specifications for this highly competitive market. In the area of optical networking, our clock and data recovery integrated circuit operates within stringent specifications for high speed communications systems known as SONET. Changes to this standard could make our products uncompetitive or unsuitable to changing system requirements and result in our inability to sell these products.

WE RELY ON THIRD PARTIES TO MANUFACTURE, ASSEMBLE AND TEST OUR PRODUCTS AND THE FAILURE TO SUCCESSFULLY MANAGE OUR RELATIONSHIPS WITH OUR MANUFACTURERS AND ASSEMBLERS WOULD NEGATIVELY IMPACT OUR ABILITY TO SELL OUR PRODUCTS

We do not have our own wafer fab manufacturing facilities. Therefore, we rely principally on one third-party vendor, Taiwan Semiconductor Manufacturing Co. (TSMC), to manufacture the ICs we design. We also currently rely principally on two third-party assembly subcontractors, Advanced Semiconductor Engineering and Amkor, to assemble and package the silicon chips provided by the wafers for use in final products. Additionally, we rely on third-party vendors for a portion of the testing

requirements of our products prior to shipping. We also maintain testing facilities in Austin, Texas. However, we have increasingly utilized offshore third-party test subcontractors, typically in Asia where the parts are assembled and where the products are more frequently delivered to our customers. We expect this trend toward utilization of offshore third-party test subcontractors to continue.

There are significant risks associated with relying on these third-party foundries and subcontractors, including:

• failure by us, our customers or their end customers to qualify a selected supplier;

• capacity shortages during periods of high demand;

• potential insolvency of the third-party subcontractors;

• reduced control over delivery schedules and quality;

• limited warranties on wafers or products supplied to us;

• potential increases in prices;

• increased need for international-based supply and logistics management;

• their inability to supply or support new or changing packaging technologies; and

• low test yields.

We currently do not have long-term supply contracts with any of our third-party vendors, and, therefore, they are not obligated to perform services or supply products to us for any specific period, or in any specific quantities, except as may be provided in a particular purchase order. Although we believe that other semiconductor foundries or assembly subcontractors can adequately address our needs, we expect that it would take approximately six to twelve months to transition performance of these services from our current providers to new providers. Such a transition may also require a qualification process by our customers or their end customers. We generally place orders for products with some of our suppliers approximately four months prior to the anticipated delivery date, with order volumes based on our forecasts of demand from our customers. Accordingly, if we do not accurately forecast demand for our products, we may be unable to obtain adequate foundry or assembly capacity from our third-party foundry and assembly subcontractors to meet our customers’ delivery requirements, or we may accumulate excess inventories. On occasion, we have been unable to adequately respond to unexpected increases in customer purchase orders, and, therefore, were unable to benefit from this incremental demand. Beyond our current forecast, none of our third-party foundry or assembly subcontractors have provided guarantees to us that adequate capacity will be available to us within the time required to meet additional demand for our products.

Since our inception, substantially all of the silicon wafers for the products that we have shipped were manufactured either by TSMC or its affiliates. Our customers typically complete their own qualification process. If we fail to properly balance customer demand across the existing semiconductor fabrication facilities that we utilize or are required by our foundry partners to increase, or otherwise change the number of fab lines that we utilize for our production, we might not be able to fulfill demand for our products and may need to divert our engineering resources away from new product development initiatives to support the fab line transition, which would adversely affect our operating results. Additionally, a resulting write off of unusable or excess inventories would contribute to a decline in earnings.

WE HAVE INCREASED OUR INTERNATIONAL SALES ACTIVITIES SIGNIFICANTLY AND PLAN TO CONTINUE SUCH EFFORTS, WHICH SUBJECTS US TO ADDITIONAL BUSINESS RISKS INCLUDING INCREASED LOGISTICAL COMPLEXITY, POLITICAL INSTABILITY AND CURRENCY FLUCTUATIONS

We recently established additional international subsidiaries and have opened additional sales offices in international markets to expand our international sales activities in Europe and the Pacific Rim region and intend to increase our staffing

in international sales. The percentage of our revenues to customers located outside of the United States was 79% in fiscal 2002, 66% in fiscal 2001 and 21% in fiscal 2000. This percentage increase in the two most recent years reflects our progress in the areas of product and customer diversification, as many of our wireless, and increasingly, wireline customers manufacture and design their products in the Pacific Rim region. Our planned international sales growth will be limited if we are unable to hire additional personnel and develop relationships with international distributors. We may not be able to maintain or increase international market demand for our products. Our international operations are subject to a number of risks, including:

• increased complexity and costs of managing international operations;

• protectionist laws and business practices that favor local competition in some countries;

• multiple, conflicting and changing laws, regulations and tax schemes;

• longer sales cycles;

• greater difficulty in accounts receivable collection and longer collection periods;

• high levels of distributor inventory subject to rights of return to us;

• political and economic instability; and

• greater difficulty in hiring qualified technical sales and applications engineers.

To date, all of our sales to international customers and purchases of components from international suppliers have been denominated in U.S. dollars. As a result, an increase in the value of the U.S. dollar relative to foreign currencies could make our products more expensive for our international customers to purchase, thus rendering our products less competitive.

OUR CURRENT MANUFACTURERS, ASSEMBLERS, TEST SERVICE PROVIDERS, AND CUSTOMERS ARE CONCENTRATED IN THE SAME GEOGRAPHIC REGION, WHICH INCREASES THE RISK THAT A NATURAL DISASTER, EPIDEMIC, LABOR STRIKE, WAR OR POLITICAL UNREST COULD DISRUPT OUR OPERATIONS OR SALES

Our current semiconductor wafer manufacturer’s foundries are located in the same region within Taiwan and our assembly and test subcontractors are located in the Pacific Rim region. In addition, many of our customers, particularly mobile telephone manufacturers, are located in the Pacific Rim region. The risk of earthquakes in Taiwan and the Pacific Rim region is significant due to the proximity of major earthquake fault lines in the area. We are not currently covered by insurance against business disruption caused by earthquakes as such insurance is not currently available on terms that we believe are commercially reasonable. Earthquakes, fire, flooding or other natural disasters in Taiwan or the Pacific Rim region, or an epidemic, political unrest, war, labor strikes or work stoppages in countries where our semiconductor manufacturer, assemblers and test subcontractors are located, likely would result in the disruption of our foundry, assembly or test capacity. There can be no assurance that such alternate capacity could be obtained on favorable terms, if at all.

A natural disaster, epidemic, labor strike, war or political unrest where our customers’ facilities are located would likely reduce our sales to such customers. For example, Samsung, our largest customer, is based in South Korea and represented 21% of our revenues during the first three months of 2003. North Korea’s recent decision to withdraw from the nuclear Non-Proliferation Treaty and related geopolitical maneuverings has created unrest. Such unrest could create economic uncertainty or instability, could escalate to war or otherwise adversely affect South Korea and our South Korean customers and reduce our sales to such customers, which would materially and adversely affect our operating results. In addition, a significant portion of the assembly and test for our wireless products occurs in South Korea. Any disruption resulting from these events could also cause significant delays in shipments of our

products until we are able to shift our manufacturing, assembling or testing from the affected subcontractor to another third-party vendor.

THE SEMICONDUCTOR MANUFACTURING PROCESS IS HIGHLY COMPLEX AND, FROM TIME TO TIME, MANUFACTURING YIELDS MAY FALL BELOW OUR EXPECTATIONS, WHICH COULD RESULT IN OUR INABILITY TO SATISFY DEMAND FOR OUR PRODUCTS IN A TIMELY MANNER

The manufacture of silicon wafers for our products is a highly complex and technologically demanding process. Although we work closely with our foundries to minimize the likelihood of reduced manufacturing yields, our foundries from time to time have experienced lower than anticipated manufacturing yields. Changes in manufacturing processes or the inadvertent use of defective or contaminated materials by our foundries could result in lower than anticipated manufacturing yields or unacceptable performance deficiencies. If our foundries fail to deliver fabricated silicon wafers of satisfactory quality in a timely manner, we will be unable to meet our customers’ demand for our products in a timely manner, which would adversely affect our operating results and damage our customer relationships.

OUR PRODUCTS ARE COMPLEX AND MAY REQUIRE MODIFICATIONS TO RESOLVE UNDETECTED ERRORS WHICH COULD LEAD TO AN INCREASE IN OUR COSTS OR A REDUCTION IN OUR REVENUES

Our products are complex and may contain errors when first introduced or as new versions are released. We rely primarily on our in-house testing personnel to design test operations and procedures to detect any errors prior to delivery of our products to our customers. Because our products are manufactured by third parties, should problems occur in the operation or performance of our ICs, we may experience delays in meeting key introduction dates or scheduled delivery dates to our customers. These errors also could cause us to incur significant re-engineering costs, divert the attention of our engineering personnel from our product development efforts and cause significant customer relations and business reputation problems.

WE DEPEND ON OUR KEY PERSONNEL TO MANAGE OUR BUSINESS EFFECTIVELY IN A RAPIDLY CHANGING MARKET, AND IF WE ARE UNABLE TO RETAIN OUR CURRENT PERSONNEL AND HIRE ADDITIONAL PERSONNEL, OUR ABILITY TO DEVELOP AND SUCCESSFULLY MARKET OUR PRODUCTS COULD BE HARMED

We believe our future success will depend in large part upon our ability to attract and retain highly skilled managerial, engineering, sales and marketing personnel. Specifically, we believe that our future success is highly dependent on Navdeep Sooch, our co-founder, Chief Executive Officer and Chairman of the Board, Daniel Artusi, our President and Chief Operating Officer, Jeffrey Scott, our co-founder and Vice President, and David Welland, our co-founder and Vice President. There is currently a shortage of qualified personnel with significant experience in the design, development, manufacturing, marketing and sales of analog and mixed-signal communications ICs. In particular, there is a shortage of engineers who are familiar with the intricacies of the design and manufacturability of analog elements, and competition for such personnel is intense. Our key technical personnel represent a significant asset and serve as the primary source for our technological and product innovations. We may not be successful in attracting and retaining sufficient numbers of technical personnel to support our anticipated growth. The loss of any of our key employees or the inability to attract or retain qualified personnel both in the United States and internationally, including engineers and sales and marketing personnel, could delay the development and introduction of, and negatively impact our ability to sell, our products.

WE MAY BE UNABLE TO PROTECT OUR INTELLECTUAL PROPERTY, WHICH WOULD NEGATIVELY AFFECT OUR ABILITY TO COMPETE

Our products rely on our proprietary technology, and we expect that future technological advances made by us will be critical to sustain market acceptance of our products. Therefore, we believe that the protection of our intellectual property rights is and will continue to be important to the success of our business. We rely on a combination of patent, copyright, trademark and trade secret laws and restrictions on disclosure to protect our intellectual property rights. We also enter into confidentiality or license agreements with our employees, consultants, intellectual property providers, and business partners, and control access to and distribution of our documentation and other proprietary information. Despite these efforts, unauthorized parties may attempt to copy or otherwise obtain

and use our proprietary technology. Monitoring unauthorized use of our technology is difficult, and we cannot be certain that the steps we have taken will prevent unauthorized use of our technology, particularly in foreign countries where the laws may not protect our proprietary rights as fully as in the United States. We cannot be certain that patents will be issued as a result of our pending applications nor can we be certain that any issued patents would protect or benefit us or give us adequate protection from competing products. For example, issued patents may be circumvented or challenged and declared invalid or unenforceable. We also cannot be certain that others will not develop effective competing technologies on their own.

SIGNIFICANT LITIGATION OVER INTELLECTUAL PROPERTY IN OUR INDUSTRY MAY CAUSE US TO BECOME INVOLVED IN COSTLY AND LENGTHY LITIGATION WHICH COULD SERIOUSLY HARM OUR BUSINESS

In recent years, there has been significant litigation in the United States involving patents and other intellectual property rights. From time to time, we receive letters from various industry participants alleging infringement of patents, trademarks or misappropriation of trade secrets. The exploratory nature of these inquiries has become relatively common in the semiconductor industry. We typically respond when appropriate and as advised by legal counsel. We have been involved in litigation to protect our intellectual property rights in the past and may become involved in such litigation again in the future. In April 2003, we paid $17 million to settle patent infringement claims brought against us by TDK Semiconductor Corporation. In the future, we may become involved in additional litigation to defend allegations of infringement asserted by others, both directly and indirectly as a result of certain industry-standard indemnities we may offer to our customers. Legal proceedings could subject us to significant liability for damages or invalidate our proprietary rights. Legal proceedings initiated by us to protect our intellectual property rights could also result in counterclaims or countersuits against us. Any litigation, regardless of its outcome, would likely be time consuming and expensive to resolve and would divert our management’s time and attention. Any intellectual property litigation also could force us to take specific actions, including:

• cease selling products that use the challenged intellectual property;

• obtain from the owner of the infringed intellectual property a right to a license to sell or use the relevant technology, which license may not be available on reasonable terms, or at all;

• redesign those products that use infringing intellectual property; or

• pursue legal remedies with third parties to enforce our indemnification rights, which may not adequately protect our interests.

FAILURE TO MANAGE OUR DISTRIBUTION CHANNEL RELATIONSHIPS COULD IMPEDE OUR FUTURE GROWTH

The future growth of our business will depend in part on our ability to manage our relationships with current and future distributors and sales representatives, develop additional channels for the distribution and sale of our products and manage these relationships. As we execute our indirect sales strategy, we will need to manage the potential conflicts that may arise with our direct sales efforts. For example, conflicts with a distributor may arise when a customer begins purchasing directly from us rather than through the distributor. The inability to successfully execute or manage a multi-channel sales strategy could impede our future growth.

WE COULD SEEK TO RAISE ADDITIONAL CAPITAL IN THE FUTURE THROUGH THE ISSUANCE OF EQUITY OR DEBT SECURITIES, BUT ADDITIONAL CAPITAL MAY NOT BE AVAILABLE ON TERMS ACCEPTABLE TO US, OR AT ALL

We believe that our existing cash, cash equivalents, investments and bank credit facility will be sufficient to meet our working capital needs, capital expenditures, investment requirements and commitments for at least the next 12 months. However, it is possible that we may need to raise additional funds to finance our activities or to consummate acquisitions of other businesses, products or technologies. We believe we could raise these funds, if needed, by selling equity or debt securities to the public or to selected investors. In addition, even though we may not need additional funds, we may still elect to sell additional equity or debt

securities or obtain credit facilities for other reasons. However, we may not be able to obtain additional funds on favorable terms, or at all. If we decide to raise additional funds by issuing equity or convertible debt securities, the ownership percentages of existing shareholders would be reduced.

ANY ACQUISITIONS WE MAKE COULD DISRUPT OUR BUSINESS AND HARM OUR FINANCIAL CONDITION

As part of our growth and product diversification strategy, we will continue to evaluate opportunities to acquire other businesses or technologies that would complement our current offerings, expand the breadth of our markets or enhance our technical capabilities. Acquisitions that we may potentially make in the future entail a number of risks that could materially and adversely affect our business and operating results, including:

• problems integrating the acquired operations, technologies or products with our existing business and products;

• diversion of management’s time and attention from our core business;

• need for financial resources above our planned investment levels;

• difficulties in retaining business relationships with suppliers and customers of the acquired company;

• risks associated with entering markets in which we lack prior experience;

• potential loss of key employees of the acquired company; and

• potential requirement to amortize intangible assets.

Future acquisitions also could cause us to incur debt or contingent liabilities or cause us to issue equity securities that could impact the ownership percentages of existing shareholders.

A SUBSTANTIAL PORTION OF THE FINAL TESTING OF OUR PRODUCTS IS PERFORMED INTERNALLY BY US, WHICH INCREASES OUR FIXED COSTS

During fiscal 2002, we significantly expanded our internal test capabilities to support our wireless products and also outsourced a portion of test operations to our contract manufacturers or other third parties. While we expect that performing a substantial portion of testing in-house provides us with advantages in terms of quality control and shorter time required to bring a product to market, we may encounter difficulties and delays in maintaining or expanding our internal test capabilities. In addition, final testing of complex semiconductors requires substantial resources to acquire state-of-the-art testing equipment and hiring additional qualified personnel, which has increased our fixed costs. If demand for our products does not support the effective utilization of these employees and additional equipment, we may not realize any benefit from performing the final testing internally. Any decrease in the demand for our products could result in the underutilization of our testing equipment and personnel. If our internal test operations are underused or mismanaged, we may incur significant costs that could adversely affect our operating results.

OUR CUSTOMERS REQUIRE OUR PRODUCTS TO UNDERGO A LENGTHY AND EXPENSIVE QUALIFICATION PROCESS WHICH DOES NOT ENSURE PRODUCT SALES

Prior to purchasing our products, our customers require that our products undergo an extensive qualification process, which involves testing of the products in the customer’s system as well as rigorous reliability testing. This qualification process may continue for six months or longer. However, qualification of a product by a customer does not ensure any sales of the product to that customer. Even after successful qualification and sales of a product to a customer, a subsequent revision to the IC, changes in its manufacturing process or the selection of a new supplier by us may require a new qualification process, which may result in delays and in us holding excess or obsolete inventory. After our products are qualified, it can take an additional six months or more before the customer commences volume production of components or devices that incorporate our products. Despite these uncertainties, we devote substantial resources, including design, engineering, sales, marketing and management efforts, toward qualifying our products

with customers in anticipation of sales. If we are unsuccessful or delayed in qualifying any of our products with a customer, such failure or delay would preclude or delay sales of such product to the customer, which may impede our growth and cause our business to suffer.

WE DEPEND ON OUR CUSTOMERS TO SUPPORT OUR PRODUCTS

Our products are currently used by our customers to produce modems, telephony equipment, mobile telephones, various wireless devices and optical networking equipment. We rely on our customers to provide hardware, software, intellectual property indemnification and other technical support for the products supplied by our customers. If our customers do not provide the required functionality or if our customers do not provide satisfactory support for their products, the demand for these devices that incorporate our products may diminish or we may otherwise be materially adversely affected. Any reduction in the demand for these devices would significantly reduce our revenues.

WE ARE SUBJECT TO INCREASED INVENTORY RISKS AND COSTS BECAUSE WE BUILD OUR PRODUCTS BASED ON FORECASTS PROVIDED BY CUSTOMERS BEFORE RECEIVING PURCHASE ORDERS FOR THE PRODUCTS

In order to ensure availability of our products for some of our largest customers, we start the manufacturing of our products in advance of receiving purchase orders based on forecasts provided by these customers. However, these forecasts do not represent binding purchase commitments and we do not recognize sales for these products until they are shipped to the customer. As a result, we incur inventory and manufacturing costs in advance of anticipated sales. Because demand for our products may not materialize, manufacturing based on forecasts subjects us to increased risks of high inventory carrying costs and increased obsolescence and may increase our operating costs. These inventory risks are exacerbated when our customers purchase indirectly through contract manufacturers because this causes us to have less visibility regarding the accumulated levels of inventory for such customers.

WE ARE SUBJECT TO CREDIT RISKS RELATED TO OUR ACCOUNTS RECEIVABLE, ESPECIALLY WHEN CUSTOMERS PURCHASE PRODUCTS THROUGH DISTRIBUTORS AND CONTRACT MANUFACTURERS

We do not generally obtain letters of credit or other security for payment from customers, distributors or contract manufacturers. Accordingly, we are not protected against accounts receivable default or bankruptcy by these entities. If we are unable to collect our accounts receivable, our operating results could be materially harmed. A significant portion of our revenues are realized through indirect channels such as distributors and contract manufacturers, with a significant portion being located outside the United States. At March 29, 2003, gross receivable balances from distributors and contract manufacturers totaled $8.6 million. Distributors and contract manufacturers may be dependent on receiving payment from the ultimate customers for the resources necessary to pay us. None of our shipments to distributors and contract manufacturers are guaranteed by the ultimate customer. If for any reason a customer does not pay the distributor or contract manufacturer, there are no assurances that our direct contractual customers will have adequate working capital to enable the collection of our accounts receivable. We continue to monitor the credit worthiness and payment practice of each of the distributors or contract manufacturers, and to date have not had any significant write offs of receivable balances from them.

WE ARE A RELATIVELY SMALL COMPANY WITH LIMITED RESOURCES COMPARED TO SOME OF OUR CURRENT AND POTENTIAL COMPETITORS AND WE MAY NOT BE ABLE TO COMPETE EFFECTIVELY AND INCREASE MARKET SHARE

Some of our current and potential competitors have longer operating histories, significantly greater resources and name recognition and a larger base of customers than we have. As a result, these competitors may have greater credibility with our existing and potential customers. They also may be able to adopt more aggressive pricing policies and devote greater resources to the development, promotion and sale of their products than we can to ours. In addition, some of our current and potential competitors have already established supplier or joint development relationships with the decision makers at our current or potential customers. These competitors may be able to leverage their existing relationships to discourage their customers from purchasing products from us or persuade them to replace our products with their products. Our competitors may also offer bundled chipset kit arrangements

offering a more complete product despite the technical merits or advantages of our products. These competitors may elect not to support our products which could complicate our sales efforts. These and other competitive pressures may prevent us from competing successfully against current or future competitors, and may materially harm our business. Competition could decrease our prices, reduce our sales, lower our margins or decrease our market share.

OUR STOCK PRICE MAY BE VOLATILE

The market price of our common stock has been volatile in the past and may be volatile in the future. The market price of our common stock may be significantly affected by the following factors:

• actual or anticipated fluctuations in our operating results;

• changes in financial estimates by securities analysts or our failure to perform in line with such estimates;

• changes in market valuations of other technology companies, particularly semiconductor companies;

• announcements by us or our competitors of significant technical innovations, acquisitions, strategic partnerships, joint ventures or capital commitments;

• introduction of technologies or product enhancements that reduce the need for our products;

• the loss of one or more key original equipment manufacturers (OEM) customers; and

• departures of key personnel.

The stock market has experienced extreme volatility that often has been unrelated to the performance of particular companies. These market fluctuations may cause our stock price to fall regardless of our performance.

PROVISIONS IN OUR CHARTER DOCUMENTS AND DELAWARE LAW COULD PREVENT, DELAY OR IMPEDE A CHANGE IN CONTROL OF US AND MAY REDUCE THE MARKET PRICE OF OUR COMMON STOCK

Provisions of our certificate of incorporation and bylaws could have the effect of discouraging, delaying or preventing a merger or acquisition that a stockholder may consider favorable. For example, our certificate of incorporation and bylaws provide for:

• the division of our board of directors into three classes to be elected on a staggered basis, one class each year;

• the ability of our board of directors to issue shares of our preferred stock in one or more series without further authorization of our stockholders;

• a prohibition on stockholder action by written consent;

• elimination of the right of stockholders to call a special meeting of stockholders;

• a requirement that stockholders provide advance notice of any stockholder nominations of directors or any proposal of new business to be considered at any meeting of stockholders; and

• a requirement that a supermajority vote be obtained to amend or repeal certain provisions of our certificate of incorporation.

We also are subject to the anti-takeover laws of Delaware which may discourage, delay or prevent someone from acquiring or merging with us, which may adversely affect the market price of our common stock.

THE PERFORMANCE OF OUR NEXT GENERATION DIRECT ACCESS ARRANGEMENT PRODUCTS MAY BE ADVERSELY AFFECTED BY SEVERE ENVIRONMENTAL CONDITIONS THAT MAY REQUIRE MODIFICATIONS, WHICH COULD LEAD TO AN INCREASE IN OUR COSTS OR A REDUCTION IN OUR REVENUES

Although our DAA products are compliant with published specifications, these established specifications might not adequately address all conditions that must be satisfied in order to operate in harsh environments. This includes environments where there are wide variations in electrical quality, telephone line quality, static electricity and operating temperatures or that may be affected by lightning or improper handling by customers and end users. Our next generation products have had a limited period of time in the field under operation, and these environmental factors may result in unanticipated returns of our products. Any necessary modifications could cause us to incur significant re-engineering costs, divert the attention of our engineering personnel from our product development efforts and cause significant customer relations and business reputation problems.

RISKS RELATED TO OUR INDUSTRY

COMPETITION WITHIN THE NUMEROUS MARKETS WE TARGET MAY REDUCE SALES OF OUR PRODUCTS AND REDUCE MARKET SHARE

The markets for semiconductors in general, and for mixed-signal ICs in particular, are intensely competitive. We expect that the market for our products will continually evolve and will be subject to rapid technological change. In addition, as we target and supply products to numerous markets and applications, we face competition from a relatively large number of competitors. Across all of our product areas, we compete with Agere Systems, AMCC, Analog Devices, Broadcom, Conexant, Cypress, ESS, Fujitsu, Hitachi, Infineon Technologies, Legerity, Maxim Integrated Products, National Semiconductor, Philips, RF Micro Devices, Semtech, Skyworks Solutions Inc. (the company resulting from the combination of Conexant’s wireless business and Alpha Industries), Texas Instruments, Vitesse Semiconductor, and others. We expect to face competition in the future from our current competitors, other manufacturers and designers of semiconductors, and innovative start-up semiconductor design companies. Some of our customers, such as Agere Systems, Intel, Motorola, Samsung and Texas Instruments, are also large, established semiconductor suppliers. Our sales to and support of these customers may enable them to become a source of competition to us, despite our efforts to protect our intellectual property rights. As the markets for communications products grow, we also may face competition from traditional communications device companies. These companies may enter the mixed-signal semiconductor market by introducing their own ICs or by entering into strategic relationships with or acquiring other existing providers of semiconductor products. We anticipate increasing competitive pressure because sales of our wireless products into the highly competitive GSM handset market are expected to comprise a larger percentage of our future revenues.

In addition, our largest competitors may restructure their operations to create separate companies that are more focused on providing the types of products we produce. For example, Conexant is a significant competitor of ours across multiple product areas. In June 2002, Conexant completed the spin-out of Skyworks Solutions, resulting from the combination of Conexant’s wireless business with Alpha Industries. In July 2000, Lucent Technologies spun off its microelectronics business, which included its optoelectronics components and integrated circuits division, into a separate company named Agere Systems in order to accelerate the growth of the business and alleviate strategic conflicts with Lucent’s competitors. Additionally, Siemens spun off its semiconductor business in 1999 to create a more focused company named Infineon Technologies.

THE AVERAGE SELLING PRICES OF OUR PRODUCTS COULD DECREASE RAPIDLY WHICH MAY NEGATIVELY IMPACT OUR GROSS MARGINS AND REVENUES

We may experience substantial period-to-period fluctuations in future operating results due to the erosion of our average selling prices. We have reduced the average unit price of our products in anticipation of future competitive pricing pressures, new product introductions by us or our competitors and other factors. The highly competitive GSM handset market is extremely cost sensitive due to the potentially very high volumes and stringent expectations placed on consumer electronics component suppliers for aggressive and sustained price reductions which do result in declining average selling prices. We expect that these factors will

create downward pressure on our average selling prices and gross margins. If we are unable to offset any such reductions in our average selling prices by increasing our sales volumes, our gross profits and revenues will suffer. To maintain gross margins, we will need to develop and introduce new products and product enhancements on a timely basis and continually reduce our costs. Our failure to do so would cause our revenues and gross margins to decline.

WE ARE SUBJECT TO THE CYCLICAL NATURE OF THE SEMICONDUCTOR INDUSTRY, WHICH HAS BEEN SUBJECT TO SIGNIFICANT DOWNTURNS

The semiconductor industry is highly cyclical and is characterized by constant and rapid technological change, rapid product obsolescence and price erosion, evolving standards, short product life cycles and wide fluctuations in product supply and demand. The industry has experienced significant downturns, often connected with, or in anticipation of, maturing product cycles of both semiconductor companies’ and their customers’ products and declines in general economic conditions. These downturns have been characterized by diminished product demand, production overcapacity, high inventory levels and accelerated erosion of average selling prices. Specific areas of the communications markets have contributed to the overall decline and volatility of the semiconductor industry in the recent past. For example, in fiscal 2001, the semiconductor industry suffered a downturn due to reductions in the actual unit sales of personal computers and wireless phones as compared to previous robust forecasts. Additionally, changing and competing technical standards in airwave interfaces such as GSM and Code Division Multiple Access (CDMA) for mobile handsets, migration to higher speed communication protocols in the optical space and the return to prominence of the traditional bell regional operating companies compared to the competitive local exchange companies all have contributed to the volatility in the communications area of the semiconductor industry. This downturn resulted in a material adverse effect on our business and operating results in fiscal 2001.

Due to the cyclical nature of the semiconductor industry, an upturn in business could result in increased competition for access to third-party foundry, assembly and test capacity. We are dependent on the availability of such capacity to manufacture, assemble and test our ICs. None of our third-party foundry, assembly or test subcontractors have provided assurances that adequate capacity will be available to us.

OUR PRODUCTS MUST CONFORM TO INDUSTRY STANDARDS IN ORDER TO BE ACCEPTED BY END USERS IN OUR MARKETS

Generally, our products comprise only a part of a communications device. All components of such devices must uniformly comply with industry standards in order to operate efficiently together. We depend on companies that provide other components of the devices to support prevailing industry standards. Many of these companies are significantly larger and more influential in affecting industry standards than we are. Some industry standards may not be widely adopted or implemented uniformly, and competing standards may emerge that may be preferred by our customers or end users. If larger companies do not support the same industry standards that we do, or if competing standards emerge, market acceptance of our products could be adversely affected which would harm our business.

Products for communications applications are based on industry standards that are continually evolving. Our ability to compete in the future will depend on our ability to identify and ensure compliance with these evolving industry standards. The emergence of new industry standards could render our products incompatible with products developed by other suppliers. As a result, we could be required to invest significant time and effort and to incur significant expense to redesign our products to ensure compliance with relevant standards. If our products are not in compliance with prevailing industry standards for a significant period of time, we could miss opportunities to achieve crucial design wins. We may not be successful in developing or using new technologies or in developing new products or product enhancements that achieve market acceptance. Our pursuit of necessary technological advances may require substantial time and expense.

AVAILABLE INFORMATION

Our Internet website address is http://www.silabs.com. Our annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to

those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 are available through our Internet website as soon as reasonably practicable after we electronically file such material with, or furnish it to, the SEC. Our Internet website and the information contained therein or connected thereto are not intended to be incorporated into this Quarterly Report on Form 10-Q.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Information related to quantitative and qualitative disclosures regarding market risk is set forth in Management’s Discussion and Analysis of Financial Condition and Results of Operations and the risk factors under Item 2 above. Such information is incorporated by reference herein.

ITEM 4. CONTROLS AND PROCEDURES

We performed an evaluation under the supervision and with the participation of our management, including our Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”), of the effectiveness of the design and operation of our disclosure controls and procedures, as defined in Rule 13a-14(c) under the Securities Exchange Act of 1934 (the “Exchange Act”). Based on that evaluation, our management, including our CEO and CFO, concluded that our disclosure controls and procedures were effective as of March 29, 2003 to ensure that information required to be disclosed by us in the reports filed or submitted by us under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms. There have been no significant changes in our internal controls or other factors that could significantly affect our internal controls subsequent to March 29, 2003.

PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

Patent Infringement Litigation Settlement

On April 1, 2003, we settled the patent infringement lawsuit brought against us by TDK Semiconductor Corporation (TDK) for alleged infringement of TDK’s United States Patent No. 5,654,984. Under the terms of the settlement agreement, TDK agreed to release all claims covered by the lawsuit. In addition, TDK granted us irrevocable, royalty-free licenses for the patent covered by the lawsuit and certain other related patents. In exchange, we made a one-time payment of $17 million to TDK and released all counterclaims covered by the lawsuit. Prior to the settlement, the case was pending in the United States District Court for the Central District of California. On April 4, 2003, the Court entered a stipulated order of dismissal with prejudice of all claims and counterclaims asserted in the lawsuit.

Securities Litigation

On December 6, 2001, a class action complaint for violations of U.S. federal securities laws was filed in the United States District Court for the Southern District of New York against us, four officers individually and the three investment banking firms who served as representatives of the underwriters in connection with our initial public offering of common stock which became effective on March 23, 2000. On April 19, 2002, a Consolidated Amended Complaint, which is now the operative complaint, was filed in the same court. The complaint alleges that the registration statement and prospectus for our initial public offering did not disclose that (1) the underwriters solicited and received additional, excessive and undisclosed commissions from certain investors, and (2) the underwriters had agreed to allocate shares of the offering in exchange for a commitment from the customers to purchase additional shares in the aftermarket at pre-determined higher prices. The action seeks damages in an unspecified amount and is being coordinated with approximately 300 other nearly identical actions filed against other companies. On July 15, 2002, we moved to dismiss all claims against us and the individual defendants. A court order dated October 9, 2002 dismissed without prejudice numerous individual defendants, including the four officers of our company who had been named individually. On February 19, 2003, the Court denied the motion to dismiss the complaint against us. Many of the parties in these actions, including us, are participating in mediation discussions. Although these discussions are underway, there are no assurances that such discussions will

result in any meaningful progress towards an acceptable settlement. We intend to vigorously contest this case, and are unable at this time to determine whether the outcome of the litigation will have a material impact on our results of operations or financial condition in any future period.

We are not currently involved in any other material legal proceedings.

ITEM 2. CHANGES IN SECURITIES AND USE OF PROCEEDS

Our registration statement (Registration No. 333-94853) under the Securities Act of 1933, as amended, relating to our initial public offering of our common stock became effective on March 23, 2000. A total of 3,680,000 shares of common stock were registered. We sold a total of 3,200,000 shares of our common stock and selling stockholders sold a total of 480,000 shares to an underwriting syndicate. The managing underwriters were Morgan Stanley & Co. Incorporated, Lehman Brothers Inc., and Salomon Smith Barney Inc. The offering commenced and was completed on March 24, 2000, at a price to the public of $31.00 per share. The initial public offering resulted in net proceeds to us of $90.6 million, after deducting underwriting commissions of $6.9 million and offering expenses of $1.6 million. We used $15 million of the proceeds as part of the consideration paid in the acquisition of Krypton Isolation, Inc. on August 9, 2000. Another $4.3 million was used to pay off equipment loans provided by Imperial Bank. We used another $1.0 million of the proceeds as part of the consideration paid in the acquisition of SNR Semiconductor Incorporated (SNR) on October 2, 2000. In December 2002, we prepaid $2.4 million in satisfaction of our remaining debt and lease obligations to three equipment financing institutions. As of March 29, 2003, the remaining proceeds were invested in short-term, investment-grade, interest bearing instruments.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

Not applicable

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

Not applicable

ITEM 5. OTHER INFORMATION

Not applicable

ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K

(a) The following exhibits are filed as part of this report:

Exhibit Number

3.1*		Form of Fourth Amended and Restated Certificate of Incorporation of Silicon Laboratories Inc. filed as Exhibit 3.1 to the Registrant’s Registration Statement on Form S-1 (SEC File No. 333-94853 (the “IPO Registration Statement”)).

3.2*		Form of Amended and Restated Bylaws of Silicon Laboratories Inc (filed as Exhibit 3.2 to the IPO Registration Statement).

4.1*		Specimen certificate for shares of common stock (filed as Exhibit 4.1 to the IPO Registration Statement).

Exhibit Number

10.1**		Settlement Agreement dated April 1, 2003 between TDK Semiconductor Corporation and Silicon Laboratories Inc.

99.1		Certification to the Securities and Exchange Commission, as required by Section 906 of the Sarbanes-Oxley Act of 2002.

* Incorporated herein by reference to the indicated filing.

** Portions of this exhibit have been omitted pursuant to a request for confidential treatment.

(b) During the three months ended March 29, 2003, we filed the following Current Reports on Form 8-K:

Not applicable

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.


			SILICON LABORATORIES INC.
			(Registrant)

April 21, 2003
Date			/s/ Navdeep S. Sooch
			Navdeep S. Sooch
			CHAIRMAN AND
			CHIEF EXECUTIVE OFFICER
			(PRINCIPAL EXECUTIVE OFFICER)


April 21, 2003			/s/ Russell J. Brennan
Date			Russell J. Brennan
			VICE PRESIDENT AND
			CHIEF FINANCIAL OFFICER
			(PRINCIPAL ACCOUNTING OFFICER)

CERTIFICATIONS

I, Navdeep S. Sooch, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Silicon Laboratories Inc.;

2. Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report;

3. Based on my knowledge, the financial statements, and other financial information included in this quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this quarterly report;

4. The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:

a) designed such disclosure controls and procedures to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this quarterly report is being prepared;

b) evaluated the effectiveness of the registrant’s disclosure controls and procedures as of a date within 90 days prior to the filing date of this quarterly report (the “Evaluation Date”); and

c) presented in this quarterly report our conclusions about the effectiveness of the disclosure controls and procedures based on our evaluation as of the Evaluation Date;

5. The registrant’s other certifying officers and I have disclosed, based on our most recent evaluation, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons fulfilling the equivalent functions):

a) all significant deficiencies in the design or operation of internal controls which could adversely affect the registrant’s ability to record, process, summarize and report financial data and have identified for the registrant’s auditors any material weaknesses in internal controls; and

b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal controls; and

6. The registrant’s other certifying officers and I have indicated in this quarterly report whether or not there were significant changes in internal controls or in other factors that could significantly affect internal controls subsequent to the date of our most recent evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses.

Date: April 21, 2003

/s/ Navdeep S. Sooch
Navdeep S. Sooch
CHAIRMAN AND
CHIEF EXECUTIVE OFFICER
(PRINCIPAL EXECUTIVE OFFICER)

CERTIFICATIONS

I, Russell J. Brennan, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Silicon Laboratories Inc.;

b) evaluated the effectiveness of the registrant’s disclosure controls and procedures as of a date within 90 days prior to the filing date of this quarterly report (the “Evaluation Date”); and

c) presented in this quarterly report our conclusions about the effectiveness of the disclosure controls and procedures based on our evaluation as of the Evaluation Date;

b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal controls; and

Date: April 21, 2003

/s/ Russell J. Brennan
Russell J. Brennan
VICE PRESIDENT AND
CHIEF FINANCIAL OFFICER
(PRINCIPAL ACCOUNTING OFFICER)

Exhibit 10.1

CONFIDENTIAL TREATMENT REQUESTED

SETTLEMENT AGREEMENT
BETWEEN
TDK SEMICONDUCTOR CORPORATION AND SILICON LABORATORIES INC.

Whereas, TDK Semiconductor Corporation, a California corporation having its principal place of business at 2642 Michelle Drive, Tustin, California 92780 (“TDK”), has brought an action against Silicon Laboratories Inc., a Delaware corporation having its principal place of business at 4635 Boston Lane, Austin, TX 78735 (“SiLabs”), styled TDK Semiconductor Corp. v. Silicon Laboratories Inc., Civil Case No. SACV-01-01737 GLT in the United States District Court for the Central District of California (the “Action”);

Whereas, in the aforementioned action, TDK has alleged that SiLabs has infringed, and continues to infringe, United States Patent No. 5,654,984 entitled “Signal Modulation Across Capacitors”;

Whereas, SiLabs has denied infringing United States Patent No. 5,654,984;

Whereas, TDK and SiLabs desire to settle the aforementioned action;

NOW, THEREFORE, in consideration of the foregoing and the mutual covenants and conditions as set forth herein, TDK and SiLabs agree as follows:

1. Effective Date: The effective date of this Settlement Agreement shall be the date of execution, but in no case later than April 1, 2003 (“Effective Date”).

2. Definitions:

A. “Party” shall mean, as applicable, either TDK or SiLabs.

B. “Entity” shall mean any corporation, firm, partnership, proprietorship, or other form of business organization.

C. “TDK Corporate Family” shall mean:

(i). any Entity that in whatever country organized or resident, directly or indirectly through or one or more intermediaries, is controlled by, is under common control with, or controls TDK; or

(ii). any Entity in which TDK, or any Entity in which any individual or Entity recited in the preceding sub-paragraph, directly or indirectly through one or more intermediaries, has at least a fifty percent (50%) ownership or voting rights interest (whether through stock ownership, stock power, voting proxy, or otherwise), or has the maximum ownership interest it is permitted to have in the country where such Entity exists; or

(iii). any Entity that directly or indirectly owns or controls through one or more intermediaries at least a fifty percent (50%) ownership or voting rights interest (whether through stock ownership, stock power, voting

proxy, or otherwise), or has the maximum ownership interest it is permitted to have in the country where such Entity exists, of TDK, or of any individual or Entity of sub-paragraph (i).

D. “TDK Affiliates” shall mean:

(i). any Entity that in whatever country organized or resident, directly or indirectly through or one or more intermediaries, is controlled by TDK; or

E. “SiLabs Affiliates” shall mean:

(i). any Entity that in whatever country organized or resident, directly or indirectly through or one or more intermediaries, whose financial reporting is or may be consolidated with the financial reporting for SiLabs.

F. “Capacitive DAA” means direct access arrangement circuitry or designs, or other circuitry or designs that performs direct access arrangement functionality; that are utilized to provide access to communication lines, including without limitation, telephone lines and that uses, or is designed or intended to be used with a capacitive isolation barrier.

G. “Licensed Patents” mean

(i). United States Patents

(a). Signal Modulation Across Capacitors,” U.S. Patent No. 5,654,984;

(b). “Telephone Hybrid Circuit,” U.S. Patent No. 5,602,912;

(c). “Low Frequency Common Mode Rejection In A Clock Circuit,” U.S. Patent No. 5,533,053;

(d). “Telephone Line Interface With AC and DC Transconductance Loops,” U.S. Patent No. 5,500,894

(ii). any other patents or patent application, filed now or in the future, in the United States or abroad, claiming priority in whole or in part from any one of the four aforementioned patents, including, but not limited to, Japanese patent application No. 329230/94 having Publication No. 7307708A2 and Japanese patent application No. 329231/94 having Publication No. 7-273839.

H. “SiLabs Product” means any product, part, device, apparatus, circuitry, design, method, process, system, machine, or thing, provided, made, have

made, used, sold, offered for sale, leased, offered for lease, distributed, offered to distribute, imported, offered to import, exported, offered to export, and/or otherwise disposed of by or for SiLabs or SiLabs Affiliates.

I. [****]

J. “Existing Products” means SiLabs Products existing on or before the Effective Date.

3. Payment: SiLabs will pay TDK the sum of Seventeen Million Dollars ($17,000,000.00) in a single, one-time payment made within three (3) business days with the execution by all Parties of this Agreement.

4. Dismissal of Entire Action: Concurrently with the execution of this agreement, the parties will jointly dismiss all Claims and Counterclaims in Civil Case No. SACV-01-01737 GLT with prejudice. In implementation of the provisions of this Section, SiLabs and TDK shall cause their respective counsel to execute and file with the United States District Court for the Central District of California a Joint Stipulated Order of Dismissal in substantially the form attached hereto as Exhibit A before the close of the District Court on the Effective Date.

5. No Admission. Nothing in this Settlement Agreement shall be deemed or construed as an admission by SiLabs or SiLabs Affiliates of infringement, enforceability, or validity of any of the Licensed Patents set forth below or as a concession of liability or fault of any kind by either Party or their respective Affiliates.

6. License.

A. Subject to any rights that [****] received pursuant to the [****] Agreement entered into on [****] by [****] and TDK (the “[****] Agreement”), TDK hereby grants SiLabs a perpetual, irrevocable, exclusive, worldwide, fully paid-up, royalty-free license to the Licensed Patents to make, have made, use, sell, offer to sell, lease, offer to lease, distribute, offer to distribute, import, offer to import, export and offer to export any product, part, device, apparatus, method, system, machine, circuit, design, or thing that directly, indirectly, contributorily, or by inducement infringes, induces infringement of, or contributes to infringement of the claims of the Licensed Patents. TDK agrees that any license executed with [****] in the future pursuant to the [****] Agreement referenced herein shall be no broader than [****], except if ordered to do so by a Court of competent jurisdiction. The license grant of Section 6 also includes the right for any manufacturers, distributors, customers, importers, or end users (ultimate or in privity or otherwise) of SiLabs or SiLabs Affiliates, to use, sell, offer to sell, lease, offer to lease, distribute, offer to distribute, import, offer to import, export, offer to export, and/or otherwise dispose of SiLabs Products that, directly, indirectly, contributorily, or by

**Confidential treatment has been requested for the portions of this agreement marked by asterisks. Omitted portions for which confidential treatment has been requested have been filed separately with the Securities and Exchange Commission.**

inducement, infringes, induces infringement of, or contributes to infringement of the claims of the Licensed Patents.

B. The aforementioned license grant is without the right of sublicense, except for the right for SiLabs to grant sublicenses, either directly or through one or more intermediaries, to SiLabs Affiliates.

7. [****]

8. Retention of Rights. TDK and Affiliates retain the rights under the Licensed Patents to make, have made, use, sell, offer to sell, lease, offer to lease, distributed, offer to distribute, import, offer to import, export, offer to export, and/or otherwise dispose of products. The make and sell rights that are retained in this section shall be limited to products (1) designed by or for TDK, TDK Affiliates, or its contractors, (2) made for the use and benefit of TDK, and (3) sold by TDK or TDK Affiliates as TDK-branded products under the sole trademarks of TDK. This Settlement Agreement shall not be construed as granting to or reserving for TDK the right to act as a foundry to make products for sale by a third party. Without limitation, TDK shall not make products for a third party pursuant to specifications provided by a third party or make products for a third party under the trademarks, trade names or other commercial indicia of such third party. Subject to paragraph 42 (Assignment), this right is personal to TDK and TDK Affiliates and shall not be assigned, sublicensed, or otherwise transferred. However, TDK shall be free to transfer or sell the License Patents at its sole discretion subject to the obligations and covenants of this Agreement.

9. Nonrefundable payment: Subject to paragraph 16, the aforementioned Seventeen Million Dollars ($17,000,000.00) payment is non-refundable, even if one or more of the patents referenced herein is, or was to be found to be, invalid and/or unenforceable for any reason whatsoever. However, this provision does not limit a cause of action to recover any damages for breach of this Settlement Agreement by either Party.

10. [****]

11. No Implied Licenses: Except as expressly set forth herein, each Party agrees that this Settlement Agreement grants no express or implied licenses by implication, estoppel, exhaustion, or otherwise in any TDK and TDK Affiliates or SiLabs and SiLabs Affiliates patent other than the Licensed Patents. Nothing in this Agreement shall prevent or preclude, under any theory including without limitation any theory of exhaustion, estoppel, or license, the assertion by SiLabs or SiLabs Affiliates against TDK or TDK Affiliates or others of any other SiLabs or SiLabs Affiliates intellectual property rights, including without limitation patents.

12. Personal to Parties: This Settlement Agreement, and the rights, obligations and covenants contained herein, is and are personal to and shall inure solely to the benefit of

the Parties hereto and their permitted successors and assigns. Any assignment by TDK or TDK Affiliates of any patents, patent applications or inventions shall respect the rights granted SiLabs and SiLabs Affiliates herein. In particular, but not by way of limitation, the covenant not to sue shall be made a condition of any assignment of any patents, patent applications or inventions by TDK or TDK Affiliates. Any future acquirer of any patents rights from TDK or TDK Affiliates is obligated to the covenants not to sue provided herein as said covenants are intended to burden and run with the TDK or TDK Affiliates patent rights and are not be limited to the Parties hereto.

13. Release: Each Party hereto, on behalf of itself and its respective Affiliates, subsidiaries, successors and assigns, hereby releases, acquits and forever discharges the other Party, and its agents, officers, directors, employees, predecessors, respective Affiliates, subsidiaries, successors, assigns, manufacturers, distributors, suppliers and customers (but only as to products, designs, methods, or circuits provided by or for, purchased by or from, or made by or for SiLabs prior to the Effective Date) from any and all claims, demands, causes of action, liabilities and damages whatsoever, of every name and nature, both in law and equity, arising out of or relating to

A. the allegations made in the Complaint, Answer, First Amended Answer with Counterclaims, Second Amended Answer with Counterclaims, and Third Amended Answer with Counterclaims; or

B. Existing Products.

14. [****]. TDK and TDK Affiliates releases, acquits and forever discharges SiLabs, SiLabs Affiliates, and any third party and each of their agents, officers, directors, employees, predecessors, subsidiaries, successors, assigns, manufacturers, distributors, suppliers and customers from any and all claims, demands, causes of action, controversies, liabilities and damages whatsoever, of every name and nature, known or unknown, accrued or not accrued, both in law and equity, arising out of or relating to:

A. the allegations made in the Complaint, Answer, First Amended Answer with Counterclaims, Second Amended Answer with Counterclaims, and Third Amended Answer with Counterclaims; or

B. Existing Products, but only to the extent such claim, demand, cause of action, or infringement, whether direct, indirect, contributory, or by inducement, results from or is caused by a SiLabs Product [****].

15. Covenant Not To Sue.

A. TDK on behalf of itself, and its Affiliates, predecessors, successors and assigns and on behalf of any successors or assigns to any TDK or TDK Affiliates intellectual property rights agrees such parties will not sue or bring any other proceeding against SiLabs or SiLabs Affiliates for any claim, demand, or cause of action of any name or nature, both in law and equity, anywhere in the world for a period of twenty (20) years from the Effective Date arising out of or relating to:

i.	Infringement by Existing Products, whether direct, indirect, contributory, or by inducement, of any past, present or future patent applications, patents, or trade secrets or know-how disclosed or covered by such patents or patent applications;
ii.	Infringement of any patent applications, patents, or trade secrets or know-how disclosed or covered by such patents or patent applications, conceived, reduced to practice, or having any priority date, in whole or in part, on or before the Effective Date;
iii.	Infringement by any Capacitive DAAs, Capacitive DAA chipsets, or capacitive isolation barriers, whether direct, indirect, contributory, or by inducement, of any past, present or future patents, or trade secrets or know-how disclosed or covered by such patents; or
iv.	Any other claim, demand, or cause of action known or unknown, which could have been made in or in connection with the Action.

B. TDK on behalf of itself, and its Affiliates, predecessors, successors and assigns and on behalf of any successors or assigns to any TDK or TDK Affiliates intellectual property rights agrees such parties will not sue or bring any other proceeding against:

i.	SiLabs, SiLabs Affiliates, any manufacturers, distributors, customers, importers, or end users (ultimate or in privity or otherwise) of SiLabs or SiLabs Affiliates; or
ii.	[****];

for any claim, demand, or cause of action of any name or nature, both in law and equity, anywhere in the world for a period of twenty (20) years from the Effective Date arising out of or relating to:

i.	Infringement by Existing Products, whether direct, indirect, contributory, or by inducement, of any past, present or future patent applications, patents, or trade secrets or know-how disclosed or covered by such patents or patent applications;
ii.	Infringement of any patent applications, patents, or trade secrets or know-how disclosed or covered by such patents or patent applications, conceived, reduced to practice, or having any priority date, in whole or in part, on or before the Effective Date, but only to the extent such claim, demand, cause of action, or infringement, whether direct, indirect, contributory, or by inducement, results from or is caused by a SiLabs Product or the integration of a SiLabs Product;
iii.	Infringement by any Capacitive DAA, Capacitive DAA chipsets, or capacitive isolation barriers provided, manufactured, made, used,

	offered for sale, sold, imported or otherwise disposed of, in the past or in the future, by or for SiLabs or SiLabs Affiliates, whether direct, indirect, contributory, or by inducement, of any past, present or future patents, or trade secrets or know-how disclosed or covered by such patents;
iv.	Any DAA chipsets including at least one line side or system side Capacitive DAA provided, manufactured, made, used, offered for sale, sold, imported or otherwise disposed of, in the past or in the future, by or for SiLabs or SiLabs Affiliates; but only to the extent such claim, demand, cause of action or infringement, whether direct, indirect, contributory, or by inducement, results from or is caused by a SiLabs Product or the integration of a SiLabs Product;
v.	Any other claim, demand, or cause of action known or unknown, which could have been made in or in connection with the Action; or
vi.	Licensing by SiLabs or SiLabs Affiliates of a Capacitive DAA or an Existing Product.

16. TDK Corporate Family. If an Entity of the TDK Corporate Family sues or brings any other proceeding for any claim, demand, or cause of action that TDK would have been precluded from bringing under this Agreement, then, without affecting or limiting any other rights or obligations under this Agreement, and if the suit is not dismissed within thirty (30) days, TDK will immediately make a payment to SiLabs for the amount specified in paragraph 3 prorated with respect to the date such claim, demand, or cause of action is brought with respect to the Effective Date and the duration of the covenant not to sue specified in paragraph 15.

17. California Civil Code: Each Party to this Settlement Agreement represents that it has read, understood, and waives the provisions of California Civil Code § 1542 which states:

(i). “A general release does not extend to claims which the creditor does not know or suspect to exist in his favor at the time of executing the release, which if known by him must have materially affected his settlement with the debtor.”

18. Authority: Each Party warrants and represents that it has the full power and authority to enter into this Settlement Agreement; that there are no other persons whose consent to this Settlement Agreement or whose joinder herein is necessary to make fully effective the provisions of this Settlement Agreement; that this Settlement Agreement does not, and will not, interfere with any other agreement to which it is a party; and

that it will not enter into any agreement the execution and/or performance of which would violate or interfere with this Settlement Agreement.

19. Ownership of Licensed Patents. Subject only to the license rights previously granted in the [****] Agreement, TDK represents and warrants that it owns all right, title and interest in and to each of the Licensed Patents, and that it has not granted, and is under no obligation to grant, to any third party any assignments of or licenses to any rights under any of the Licensed Patents, nor a covenant not to sue any third party under any of the Licensed Patents.

20. Validity of Licensed Patents. TDK represents and warrants that, to the best of its knowledge and belief, the Licensed Patents are valid and enforceable.

21. All Relevant Patents. TDK and TDK Affiliates represent and warrant that the definition of Licensed Patents above sets forth all patents and applications for patent that are owned by, controlled by, or licensed to TDK or TDK Affiliates as of the Effective Date and having claims covering Capacitive DAAs.

22. Choice of Law: This Settlement Agreement shall be construed with and governed by the laws of the State of New York.

23. Dispute Resolution: Any dispute relating to or arising out of this agreement shall be resolved in the court of competent jurisdiction in New York City, State of New York. The prevailing Party in any such dispute shall be entitled to recover its reasonable attorneys fees and costs.

24. Entire Agreement: The Parties agree that this Settlement Agreement constitutes the entire agreement between the parties and supersedes all prior agreements, whether oral or written.

25. Modifications: No modification or amendment to this Settlement Agreement will be valid or binding unless reduced to writing and duly executed by authorized representatives of both parties.

26. No Waiver: A failure by a Party hereto to object or to take affirmative action with respect to a breach of this agreement by the other Party shall not be construed as a waiver of any future breach or other wrongful conduct.

27. Agreement Execution: This Settlement Agreement may be signed in counterparts, each of which shall be deemed on original hereof, but all of which together shall constitute one and the same instrument. Fax signatures are acceptable.

28. Binding Agreement: This Settlement Agreement shall not become binding until executed by both parties.

29. Fees and Costs. Each side will bear its own fees and costs.

30. Joint Drafting. Each Party acknowledges that this Settlement Agreement has been jointly drafted and will be interpreted in accordance with its terms, without favor to either Party.

31. Contract Invalidity. If one or more provisions of this Settlement Agreement are found to be wholly, or partially, invalid or unenforceable by a Court of competent jurisdiction, then the validity or unenforceability of all of the other provisions of this Settlement Agreement will be unaffected.

32. Review By Counsel. Each Party acknowledges that it has had the opportunity to have this agreement reviewed by counsel of its choice prior to execution hereof.

33. Non-Reliance. Each Party acknowledges that, except as expressly set forth herein, it is not relying on any representation by the other Party in entering into this Settlement Agreement.

34. Enforcement: [****]

35. Confidentiality. The Parties will take all necessary actions to preserve the confidentiality of the terms of, the negotiations, and/or considerations leading to, this Settlement Agreement and of any confidential materials of the other Party produced or discovered in the Action. The terms of this Settlement Agreement shall remain confidential, except that either Party may disclose whatever terms are necessary so as to comply with the law or accounting requirements. Further, neither Party will be deemed to be in breach of this provision for disclosing information that has already been made public through no fault of that Party. All confidential materials provided in any form by any party in the Action shall be returned to the disclosing party or certified to have been destroyed in accordance with the terms of the protective order entered by the Parties in the Action, including but not limited to confidential materials in the possession of any retained consultants or experts. [****]

36. Press Release. The provisions of paragraph 35 notwithstanding, the Parties further agree as follows:

A. The Parties have agreed to issue the joint press release that is attached hereto as Exhibit C. Unless mutually agreed upon, the Parties shall issue no other press release or hold any press conference regarding the Action, the terms of, the negotiations, and/or considerations leading to, this Settlement Agreement.

B. The Parties have each designated four authorized Party representatives, who are listed in Exhibit D, all of whom shall be employees of the Parties. The Parties will instruct all of their counsel, agents, officers, directors, employees,

predecessors, respective Affiliates, subsidiaries, successors, assigns, that if inquiry is made by the press, media or any third party regarding the terms of, the negotiations and/or considerations leading to this Settlement Agreement, or regarding the merits of the Action, to direct all inquiries only to such designated representatives. Such representatives will direct all general inquiries to the language of the joint press release and may respond by saying: “We settled the case because it was an appropriate business decision. Beyond that, we have no further comment” or similar language to that effect.

C. The Parties will take all necessary actions and instruct and order their counsel:

(i).	not to participate in a press conference or any other public forum, contact the press, issue any form of press release, grant an interview, or initiate or respond to any other form of contact with the media to discuss this action, the terms of, the negotiations, and/or considerations leading to, the settlement agreement;
(ii).	not to discuss or characterize, either orally or in writing, this action, the terms of, the negotiations, and/or considerations leading to, the settlement agreement;
(iii).	not to reveal or discuss any discussions that lead to the settlement;
(iv).	not to publicly disparage any party to the action, their employees, counsel, or agents;
(v).	not to reveal any information that is subject to the protective order issued in the action;
(vi).	not to use this action, the terms of, the negotiations, and/or considerations leading to, the settlement agreement in any form of advertising, including, without limitation, internet published materials; and
(vii).	if asked about the settlement, its terms, negotiations, or the settlement agreement, to state that the parties settled on the terms set forth in the joint press release issued by the parties because it was in their mutual best interests and make no further comment.

D. Nothing in section 36(C) shall act as a restraint of trade in violation of applicable professional lawyer’s ethical rules or prohibit or inhibit a lawyer from representing a client according to the applicable lawyer’s professional ethical rules, except as otherwise prohibited by court order or by law.

37. Maintenance. TDK agrees to pay all the maintenance fees for the Licensed Patents. TDK further agrees to prosecute to completion all pending United States and Foreign patent applications that claim priority from any one of the four aforementioned Licensed Patents.

38. No Admissions. SiLabs and TDK agree that neither this Settlement Agreement nor any act under it constitutes or shall be construed as constituting an admission or concession of liability or fault of any kind by any Party hereto.

39. Bankruptcy. In the event TDK seeks or is involuntarily placed under the protection of the bankruptcy laws, Title XI, U.S. Code, and the trustee in bankruptcy rejects this Settlement Agreement and/or the licenses granted hereby, SiLabs elects, pursuant to Section 365(n), to retain all rights granted to it under this Settlement Agreement to the extent permitted by law.

40. No Notice. TDK represents and warrants that its officers, legal counsel, and senior managers have not received any written notice from a third party that the Licensed Patents are or may be invalid or unenforceable.

41. Further Acts. SiLabs and SiLabs Affiliates and TDK and TDK Affiliates agree that they will each execute such further documents and take such further acts as may be necessary to carry out the intent of this Settlement Agreement.

42. Assignment. A Party may assign this Settlement Agreement without need for the other Party’s approval to an Affiliate or to a successor in ownership of all or substantially all of its assets or stock. Other than as expressly allowed herein, this Agreement shall not be assignable by either Party other than with the prior written consent of both Parties.

43. Succession. This Agreement and the rights and obligations granted and undertaken thereunder shall be binding upon and inure to the benefit of the Parties hereto, and their successors, trustee(s) or receiver(s), including those in bankruptcy, and permitted assignees.

44. No Thwarting of Agreement. TDK and TDK Affiliates represent and warrant that they have not transferred, assigned, or granted, in whole or in part, any rights to bring up an action for, any patents or patent applications to a third party from the date of the filing of the Action through the Effective Date. TDK and TDK Affiliates represent and warrant, to the best of their knowledge and belief, that there are no patents or patent applications which have been for examined for infringement by SiLabs by another Entity in the TDK Corporate Family having claims covering Capacitive DAAs or that are infringed, directly, indirectly, contributorily, or by inducement, by SiLabs Existing Products. TDK and TDK Affiliates further represent and warrant that they have not taken and, other than a suit for breach of contract, will not take any action to undermine the rights granted to SiLabs under this Agreement.

IN WITNESS WHEREOF, TDK and SiLabs execute this Settlement Agreement by their duly authorized representatives as follows:

	SILICON LABORATORIES, INC.

	By:	/s/ Navdeep Sooch

	Title:	Chairman & CEO

	Date:	4/1/03


	TDK SEMICONDUCTOR CORP.

	By:	/s/ Tsutae (Den) Suzuki

	Title:	Chief Executive Officer

	Date:	3/31/03

EXHIBITS

Exhibit A — Joint Settlement Agreement

Exhibit B — [****]

Exhibit C — Joint Press Release

Exhibit D — Authorized Representatives

[****]

EXHIBIT A

Gary A. Hecker (CSB No. 099008)
James M. Slominski (CSB No. 166357)
THE HECKER LAW GROUP
1925 Century Park East, Suite 2300
Los Angeles, CA 90067
Tel: (310) 286-0377
Fax: (310) 286-0488

Attorneys for Plaintif
TDK Semiconductor Corporation

Craig N. Hentschel (CSB No. 66178)
John R. Danos (CSB No. 210964)
ARNOLD & PORTER
777 South Figueroa Street, 44th Floor
Los Angeles, CA 90017-5844
Tel: (213) 243-4000
Fax: (213) 243-4199

Laurence S. Rogers
Marta E. Gross
FISH & NEAVE
1251 Avenue of the Americas
New York, NY 10020
Tel.: (212) 596-9000
Fax: (212) 596-9090

Attorneys for Defendant and Counter-
Claimant Silicon Laboratories Inc.

IN THE UNITED STATES DISTRICT COURT

FOR THE CENTRAL DISTRICT OF CALIFORNIA

		)
TDK SEMICONDUCTOR CORPORATION,		)	Civil Action No.: SACV 01737 GLT (MLGx)
		)
	Plaintiff,	)
		)
	v.	)
		)	STIPULATED ORDER OF DISMISSAL
SILICON LABORATORIES INC.,		)
		)
	Defendant.	)
		)
		)
AND RELATED COUNTERCLAIM		)
		)

Pursuant to Rule 41(a)(1)(ii) and (c), Fed. R. Civ. P., the parties TDK Semiconductor Corporation and Silicon Laboratories Inc., by and through their respective counsel of record, do hereby stipulate, subject to the approval of the Court, as follows:

l. All claims and counterclaims asserted in this action shall be and hereby are dismissed with prejudice.

2. Each party shall bear its own costs and attorneys’ fees with respect to the matters dismissed hereby.

		THE HECKER LAW GROUP

Dated:	April , 2003	By:
			Attorneys For Plaintiff
			TDK Semiconductor Corporation

		FISH & NEAVE

Dated:	April , 2003	By:
			Attorneys For Defendant
			Silicon Laboratories, Inc.

IT IS SO ORDERED:

Dated:	, 2003
			UNITED STATES DISTRICT JUDGE

EXHIBIT B
[****]

EXHIBIT C

PRESS RELEASE

For more information, please contact:
Shannon Pleasant
Corporate Communications
Silicon Laboratories Inc.
(512) 464-9254
shannon.pleasant@silabs.com

Silicon Laboratories and TDK Semiconductor Reach Settlement in Patent Infringement Litigation

AUSTIN, Texas, April XX, 2003 — Silicon Laboratories Inc. (Nasdaq: SLAB) and TDK Semiconductor Corporation jointly announced today that the companies have reached an amicable settlement of the patent infringement lawsuit brought by TDK covering one of their patents related to signal modulation technology for digital access arrangements (DAA).

Under the terms of the settlement, TDK agreed to release all claims covered by the lawsuit. In addition, TDK granted Silicon Laboratories irrevocable, royalty free licenses for the patent covered by the lawsuit and certain other related patents. In exchange, Silicon Laboratories agreed to make a one-time payment of $17 million to TDK and released all counterclaims covered by the lawsuit. Silicon Laboratories and TDK agree that the amicable resolution of this litigation does not constitute an admission or concession of liability or fault by either party. All other terms of the settlement are confidential.

“The resolution of this lawsuit, which has been pending for almost two years, will allow the management of Silicon Laboratories to focus time and energy on the continued growth of the company,” said Russ Brennan, chief financial officer of Silicon Laboratories.

“TDK Semiconductor Corporation is pleased to have resolved this litigation matter with terms and conditions that allow both parties to move forward with their business strategies” said Gerald Fitch, chief financial officer of TDK Semiconductor Corporation.

The majority of the settlement payment will be expensed in Silicon Laboratories’ first quarter with a $x million charge to cost of revenues, resulting in approximately $0.xx per diluted share reduction to earnings. The remaining $x million of the $x million total payment will be amortized to cost of revenues over the useful life of the technology that was the subject of the litigation. Silicon Laboratories exited fiscal 2002 with a debt free balance sheet and with a cash and cash equivalents balance of $115.2 million.

About Silicon Laboratories Inc.

Silicon Laboratories Inc. designs, manufactures and markets proprietary high-performance mixed-signal integrated circuits (ICs) for a broad range of communications markets. Silicon Laboratories is an ISO9001-certified manufacturer and has applied for over 161 patents on its mixed-signal technology. The company was incorporated in 1996 and is based in Austin, Texas. Additional information about Silicon Labs is available at www.silabs.com or through the toll-free investor relations line at 1-877-411-SLAB (7522).

About TDK Semiconductor Corp.

TDK Semiconductor, part of $4.8 billion TDK Corporation (NYSE: TDK), provides advanced ICs for communications markets worldwide. The company produces analog and mixed-signal products for applications such as digital cable and satellite set-top boxes; local, metro and wide area networking; point of sale terminals, payphones, meters and smart card readers. http://www.tdksemiconductor.com

Cautionary Language

This press release contains forward-looking statements based on Silicon Laboratories’ current expectations. The words “believe,” “expect,” “intend,” “plan,” “project,” “will” and similar phrases as they relate to Silicon Laboratories are intended to identify such forward-looking statements. These forward-looking statements reflect the current views and assumptions of Silicon Laboratories and are subject to various risks and uncertainties that could cause actual results to differ materially from expectations. Among the factors that could cause actual results

to differ materially from those in the forward-looking statements are as follows: risks that Silicon Laboratories may not be able to maintain its historical growth rate; difficulties managing international sales; credit risks associated with accounts receivable; geographic concentration of manufacturers, assemblers, test service providers and customers in the Pacific Rim subjects Silicon Laboratories to risks of natural disasters, war and political unrest; dependence on a limited number of products and customers; product development risks; intellectual property litigation risks; the competitive and cyclical nature of the semiconductor industry and other factors that are detailed in Silicon Laboratories’ filings with the SEC, particularly the Form 10-K filed January 22, 2003. Unless otherwise required by law, Silicon Laboratories expressly disclaims any obligation to release publicly any updates or revisions to any forward-looking statements to reflect any result or change in expectations.

# # #

Note to editors: Silicon Laboratories and the Silicon Laboratories logo are trademarks of Silicon Laboratories Inc. All other product names noted herein may be trademarks of their respective holders.

EXHIBIT D

AUTHORIZED REPRESENTATIVES

For TDK:

[****]

For SiLabs:

[****]

Exhibit 99.1

Certification of Chief Executive Officer and Chief Financial Officer

Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned officers of Silicon Laboratories Inc. (the “Company”) hereby certify that:

(i) the accompanying Quarterly Report on Form 10-Q of the Company for the three months ended March 29, 2003 as filed with the Securities and Exchange Commission (the “Report”) fully complies with the requirements of Section 13(a) or Section 15(d), as applicable, of the Securities Exchange Act of 1934; and

(ii) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities Exchange Commission or its staff upon request.

Dated April 21, 2003


/s/ Navdeep S. Sooch
Navdeep S. Sooch
CHAIRMAN AND CHIEF EXECUTIVE OFFICER


/s/ Russell J. Brennan
Russell J. Brennan
VICE PRESIDENT AND CHIEF FINANCIAL OFFICER

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

QUALITATIVE AND QUANTITATIVE DISCLOSURE ABOUT MARKET RISK

FACTORS AFFECTING OUR FUTURE OPERATING RESULTS

RISKS RELATED TO OUR BUSINESS

Date:

3/31/03