UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 8-K

CURRENT REPORT

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

Date of report (Date of earliest event reported): July 25, 2012

SILICON LABORATORIES INC.

(Exact Name of Registrant as Specified in Charter)

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

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

o            Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o            Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o            Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o            Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 2.02. Results of Operations and Financial Condition

On July 25, 2012, Silicon Laboratories Inc. (“Silicon Laboratories”) issued a press release describing its results of operations for its fiscal quarter ended June 30, 2012.  A copy of the press release is attached as Exhibit 99 to this report.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits.

Use of Non-GAAP Financial Information

From time to time, Silicon Laboratories provides certain non-GAAP financial measures as additional information relating to its operating results.  The non-GAAP financial measurements provided in the press release furnished herewith do not replace the presentation of Silicon Laboratories’ GAAP financial results. These additional measurements merely provide supplemental information to assist investors in analyzing Silicon Laboratories’ financial position and results of operations; however, these measures are not in accordance with, or an alternative to, GAAP and may be different from non-GAAP measures used by other companies. Silicon Laboratories has chosen to provide this information to investors because it believes that such supplemental information enables them to perform meaningful comparisons of past, present and future operating results, and as a means to highlight the results of core ongoing operations.

Pursuant to the requirements of Regulation G, we have provided in the press release furnished with this report a reconciliation of the non-GAAP financial measures to the most directly comparable GAAP financial measures.

The information in this report, including the exhibit hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section.  The information contained therein and in the accompanying exhibit shall not be incorporated by reference into any filing with the U.S. Securities and Exchange Commission made by Silicon Laboratories, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

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SIGNATURE

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 hereunto duly authorized.

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EXHIBIT INDEX

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Exhibit 99

SILICON LABORATORIES RESULTS EXCEED EXPECTATIONS

—Company Reports Strong Quarterly Performance and Outlook—

AUSTIN, Texas — July 25, 2012 — Silicon Laboratories Inc. (Nasdaq: SLAB), a leader in high-performance, analog-intensive, mixed-signal integrated circuits (ICs), today reported second quarter revenue of $135.7 million, an impressive eight percent sequential increase.  GAAP and non-GAAP diluted earnings per share of $0.47 and $0.51, respectively, also exceeded expectations and represented significant growth.

Financial Highlights

Second quarter revenue was a company record and resulted from growth across the company’s major product categories. On a GAAP-basis, gross margin improved to 61.0 percent. R&D investment increased to $34.2 million and SG&A expense was $32.2 million. Resulting GAAP operating income was 12.1 percent. Diluted GAAP earnings per share increased by 42 percent sequentially to 47 cents, due in part to a tax reserve release.

The following non-GAAP results exclude the impact of stock compensation and other one-time items.  Significant strength in the company’s Broad-based products improved the gross margin mix, resulting in gross margin of 61.3 percent for the quarter.  R&D increased to $31.3 million due to a record quarter of new product activity, and SG&A increased slightly to $24.4 million.  Operating income, therefore, was better than expected at 20.2 percent of revenue. Strong revenue growth and margin expansion provided significant earnings leverage resulting in diluted earnings per share of 51 cents, a 19 percent sequential increase.  Reconciling charges are set forth in the financial measures table included below.

The company ended the quarter with $323 million in cash, cash equivalents and investments due to continued healthy cash flow from operations.

Business Highlights

All three of the company’s major product categories, Access, Broadcast and Broad-based, grew sequentially in the second quarter.

Within the Broad-based business, the company’s timing and MCU products posted record quarters as the company began shipping into new applications in storage, security, and test and measurement.  Both product lines also posted record design wins, indicating strength in the revenue pipeline and supporting the continued market share gains driving the outperformance versus the end markets.

The company’s wireless products increased over 50 percent in the quarter and are expected to contribute meaningfully to future growth with the addition of the Ember products acquired early in the third quarter.  When combined with the company’s emerging 32-bit MCU portfolio, the company anticipates having the industry’s strongest offering for embedded wireless devices.

The Broadcast business increased in the second quarter driven by audio products, which were up meaningfully due to seasonal builds of consumer radios. The video business was also solid, coming in about flat to the record high in the first quarter. The Access products saw growth across voice over IP, modems and Power over Ethernet applications.

“Our business is hitting on all cylinders, underscoring the strength of our portfolio and ability to gain market share,” said Tyson Tuttle, president and CEO of Silicon Laboratories. “We’re focusing on developing products that address some of the most significant trends impacting the industry. The global build-out of infrastructure to support growing bandwidth needs, the emergence of the Internet of Things, and the increasing importance of energy efficient and green technology all require analog-intensive, mixed-signal ICs.”

The company expects revenue for the third quarter to increase to $140 to $145 million.

Webcast and Conference Call

A conference call discussing the quarterly results will follow this press release at 7:30 a.m. central time. An audio webcast will be available simultaneously on Silicon Laboratories’ website under Investor Relations (www.silabs.com).  A replay will be available after the call at the same website listed above or by calling 1 (855) 859-2056 or +1 (404) 537-3406 (international) and by entering 99916472. The replay will be available through August 8th.

About Silicon Laboratories Inc.

Silicon Laboratories Inc. is a leading designer of high-performance, analog-intensive, mixed-signal integrated circuits (ICs) for a broad range of applications. Silicon Laboratories’ diverse portfolio of highly integrated, patented solutions is developed by a world-class engineering team with expertise in cutting-edge mixed-signal design. The company has design, engineering, marketing, sales and applications offices throughout North America, Europe and Asia. For more information about Silicon Laboratories, please visit www.silabs.com.

Forward-Looking Statements

This press release contains forward-looking statements based on Silicon Laboratories’ current expectations. The words “believe,” “estimate,” “expect,” “intend,” “anticipate,” “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 the following: risks that Silicon Laboratories may not be able to maintain its historical growth; quarterly fluctuations in revenues and operating results; volatile stock price; average selling prices of products may decrease significantly and rapidly; difficulties developing new products that achieve market acceptance; dependence on a limited number of products and customers; intellectual property litigation risks; inventory-related risks; risks associated with acquisitions; difficulties managing international activities; difficulties managing our manufacturers and subcontractors; risks that Silicon Laboratories may not be able to manage strains associated with its growth; credit risks associated with our accounts receivable; dependence on key personnel;

risks associated with divestitures; geographic concentration of manufacturers, assemblers, test service providers and customers in Asia that subjects Silicon Laboratories’ business and results of operations to risks of natural disasters, epidemics, war and political unrest; the competitive and cyclical nature of the semiconductor industry and other factors that are detailed in Silicon Laboratories’ filings with the SEC. 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.

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

CONTACT: Silicon Laboratories Inc., Shannon Pleasant, (512) 464 9254, shannon.pleasant@silabs.com

Silicon Laboratories Inc.

Condensed Consolidated Statements of Income

(In thousands, except per share data)

(Unaudited)

Unaudited Reconciliation of GAAP to Non-GAAP Financial Measures

(In thousands, except per share data)

*              Excludes stock compensation recognized in connection with terminations costs for our former CEO.

Silicon Laboratories Inc.

Condensed Consolidated Balance Sheets

(In thousands, except per share data)

(Unaudited)

Silicon Laboratories Inc.

Condensed Consolidated Statements of Cash Flows

(In thousands)

(Unaudited)

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