Lenovo Adopts Silicon Laboratories' Si4300 Power Amplifier and Aero(R) II Transceiver for GSM/GPRS Handsets; Monolithic PA and Single-Chip Transceiver Deliver Excellent Performance in a Market-Leading Footprint.

AUSTIN, Texas -- Silicon Laboratories Inc. (Nasdaq:SLAB) today announced that Lenovo, the largest high technology enterprise in China, has adopted Silicon Laboratories' Si4300 power amplifier (PA) and Aero(R) II transceiver for dual-band GSM mobile handsets. By selecting the Si4300 and Aero II transceiver, Lenovo significantly reduced the board space and overall bill-of-materials (BOM) required to implement the entire radio section of its GSM handsets.

The Si4300 reduces both board space and component count by more than 70 percent when compared to other solutions. Unlike PA modules (PAM), which are composed of multiple die and numerous discretes, the Si4300 uses a single die on a small substrate making it the industry's smallest GSM PA solution and the first functionally-complete monolithic GSM PA solution. Manufactured using TSMC's standard 0.35-micron CMOS process, the Si4300 is also the first GSM PA solution to be implemented in CMOS.

In addition, the Aero II transceiver offers a unique combination of superior integration and performance that exceeds the stringent GSM/GPRS market requirements allowing companies like Lenovo to deliver world-class performance on critical handset parameters such as sensitivity, which ultimately results in expanded network coverage and fewer dropped calls.

"Silicon Laboratories' CMOS PA combined with our market-leading Aero transceiver technology sets a new standard for GSM handsets," said Dan Rabinovitsj, vice president of Silicon Laboratories. "We are pleased to expand our relationship with Lenovo, a leader in consumer electronics in China, to include our latest generation transceiver and cutting-edge PA."

Based on new, patented amplifier architecture, the Si4300 integrates all functions between the transceiver and the antenna switch module (ASM), including complete power control circuitry, thermal and load mismatch protection, harmonic filtering and input and output matching networks. The very small BOM makes it easy to design into a handset. The monolithic GSM 900/DCS 1800 PA solution is available in a small (3.9 x 6.4 x 1.3 mm) surface-mount package.

The Aero II transceiver is the smallest, highest performance, most integrated, easiest to use and manufacture transceiver for GSM/GPRS ultra-low-cost handsets. The Aero II transceiver enables handset manufacturers to meet market requirements of lower BOM and faster time-to-market and has been widely adopted across production handset platforms. The Aero II transceiver also serves as a fundamental building block for supporting EDGE platforms.

Lenovo Mobile

Lenovo Mobile, a subsidiary company of Lenovo Group (Legend Group Limited -- SEHK: 992; ADR stock code: LGHLY), is the largest high technology enterprise in China. The Group's own brand PCs have been the best seller in China since 1997, commanding a market share of about 27 percent in 2003. The company also manufactures handheld devices, mobile handsets and motherboards and provides IT consulting services. The company was listed on the Hong Kong Stock Exchange in 1994 and is a constituent stock of the Hang Seng Index. Its American Depositary Receipts are currently being traded in the United States. For more information, please visit: http://www.Lenovo.com.

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-KA filed April 25, 2005 and the 10-Q filed July 22, 2005.

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