Silicon Laboratories Announces Fourth-Generation Silicon DAA Technolog

    Business Editors/High-Tech Writers

    AUSTIN, Texas--(BUSINESS WIRE)--March 15, 2005--Silicon Laboratories Inc. (NASDAQ:SLAB) today announced a fourth-generation silicon direct access arrangement (DAA) integrated circuit (IC), further decreasing the total solution cost and footprint for analog modems in desktop personal computers. Based on patented isolation technology, Silicon Laboratories' new Si3007 line-side IC paired with the existing Si3052 system-side device and soft-modem software offers a cost-effective, robust solution for the remaining segment of the PCI soft-modem market that currently uses transformer-based DAAs.
    Silicon Laboratories' DAAs are the industry's most highly integrated soft-modem chipsets and the choice of leading PC OEMs. The Si3007, offered in a tiny 8-pin package, further reduces the number of components and board space by an additional 30 percent allowing for a smaller, more cost-effective modem. It maintains the industry-leading surge immunity for which Silicon Laboratories' silicon DAAs are known and includes key PC soft-modem features such as ring validation, PC lockup protection and line voltage and loop current monitoring. In addition to its revolutionary footprint and component count, the Si3007 is compliant with the telecommunications regulations of more than 30 different countries including China, Japan, Taiwan and all of North America.
    "Since the launch of Silicon Laboratories' silicon DAA technology more than three-fourths of the PC market has adopted silicon DAAs," said Dave Bresemann, vice president of Silicon Laboratories. "The Si3052/Si3007 chipset brings a high-end feature set and the advantages of silicon DAAs to a market segment accustomed to legacy discrete implementations and minimal feature sets."
    Silicon Laboratories' new modem solution meets numerous PTT, emissions, immunity and safety standards with the industry's highest surge performance, lowest power dissipation and superior transformerless DAA technology.

    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 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 www.silabs.com.

    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. Silicon Laboratories believes that it is important to communicate the company's future expectations to investors. However, there may be events in the future that Silicon Laboratories is not able to accurately predict or control. For a discussion of these and other 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' recent filings with the SEC, particularly the Form 10-K filed February 15, 2005.

    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.

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CONTACT: Silicon Laboratories Inc., Austin Lindsey Starnes, 512-532-5756 lindsey.starnes@silabs.com

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