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Silicon Laboratories Expands FM Broadcast Radio Tuner Family, Further Reducing Solution Footprint; Si4702/03 Offers Industry's Highest Performance and Smallest Size for Mobile Phones and Portable Audio Devices

August 14, 2006

"Our first products in this area have been extremely successful, and we're continuing to build on that success and widen the competitive gap through relentless integration," said Tyson Tuttle, vice president of Silicon Laboratories. "The Si4702/03 second-generation FM tuners offer the smallest, easiest, most cost-effective and feature-rich FM solutions on the market. Our innovative FM radios are enabling the industry trend to integrate radio functionality onto handsets where music and media features are becoming standard in a variety of models, including entry level phones."

With FM radios being increasingly integrated into handsets and portable devices, performance, integration and size become critical as they impact both the customer experience and the ultimate cost of the product. To deliver unmatched performance, Silicon Laboratories' FM radio tuners leverage a patented, field-proven, low-IF digital architecture and embedded processor technology, reducing cost and enabling superior sound quality performance and adjustability in critical FM receiver specifications. The Si4702/03 devices offer industry-leading selectivity and sensitivity as well as easily adjustable seek, soft mute and blend, all of which are fundamental to superior performance in highly variable FM broadcast environments.

The Si4703 addresses feature-rich devices by offering additional detection and processing of the Radio Data Service (RDS) and Radio Broadcast Data Service (RBDS) information. The Si4703 enables data such as the station ID and song name to be displayed to the user. The Si4702/03 FM tuners are software driver compatible with the Si4700/1 FM tuners.

Pricing and Availability

The Si4702 and Si4703 are available in a compact 3 x 3 x 0.55 mm 20-pin quad flat no-lead (QFN) package. Pricing for the Si4702 is $2.60 in quantities of 10K. Pricing for the Si4703 is $2.99 in quantities of 10K. Volume production is expected in the fourth quarter of 2006. An evaluation board is available for $150. For more information on the FM Tuner products, please visit

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 and has more than 600 patents pending and issued. Silicon Laboratories' diverse portfolio of highly integrated, patented solutions is developed by a world-class engineering team with decades of cumulative 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

Cautionary Language

This press release may contain forward-looking statements based on Silicon Laboratories' current expectations. These forward-looking statements involve risks and uncertainties. A number of important factors could cause actual results to differ materially from those in the forward-looking statements. For a discussion of factors that could impact Silicon Laboratories' financial results and cause actual results to differ materially from those in the forward-looking statements, please refer to 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 and the Silicon Laboratories logo are trademarks of Silicon Laboratories Inc. All other product names noted herein may be trademarks of their respective holders.

CONTACT: Silicon Laboratories Inc., Austin
Kirstan Ryan, 512-532-5349

SOURCE: Silicon Laboratories Inc.

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