Silicon Laboratories Introduces Industry's First Single-Chip RF Front-End for Direct Broadcast Satellite; Highly Integrated SiRX(TM) Family Delivers on Performance and Ease-of-Use.

AUSTIN, Texas -- Silicon Laboratories Inc. (Nasdaq:SLAB), a leader in high-performance, analog-intensive, mixed-signal ICs, today announced the first product in its SiRX(TM) product family, the industry's first fully-integrated single-chip satellite RF front-end for direct broadcast satellite (DBS). Offering the highest performance, smallest size and easiest-to-use receiver solution for DBS, the Si21xx devices are ideal for all free-to-air (FTA) and pay-TV DBS equipment including satellite set-top boxes, PC cards for satellite TV, DBS receivers for automotive or avionic use, DVD recorders and digital TVs with integrated satellite receivers.

Leveraging Silicon Laboratories' world-class RF expertise in CMOS and building upon the company's unique intellectual property for minimizing digital-to-analog crosstalk, the SiRX satellite RF front-end integrates a high-performance satellite L-band RF tuner, a dual-mode DVB-S/DSS digital demodulator and a power-efficient, step-up supply controller for the low-noise block converter (LNB) into a single 6 x 8 mm CMOS solution. The integration of the LNB supply controller is an industry-first and includes support for DiSEqC 2.x and legacy tone/voltage LNB signaling. The SiRX devices also support an on-chip hardware blindscan feature that improves channel scan time by a factor of 10 when compared to many existing solutions. This feature radically reduces set-top box installation time for FTA applications where channel locations are unknown.

"With more than 65 million DBS receivers expected to ship in 2006, satellite television is a large and growing market where OEMs are facing pressure to integrate more value-added features," said Michelle Abraham, principal analyst of In-Stat. "The integration of the complete front-end satellite receiver onto a single-chip eliminates the difficulty of analog RF design for satellite set-top box designers. This integration has the potential to improve performance as well as reduce system cost and design time so that equipment manufacturers can focus their efforts on integrating higher-value features into their products."

The SiRX family provides best-in-class performance, meeting or exceeding key RF front-end requirements such as sensitivity, intermodulation distortion, receiver implementation loss and LNB peripheral support. The integration of the tuner, demodulator and LNB supply functions eliminates the need for external signaling among three separate ICs, which greatly simplifies the required software-programming overhead as well as the number of board signal traces typical of competing solutions. The single-chip RF-to-digital architecture of the SiRX satellite RF front-end family reduces design time and allows an easy conversion from terrestrial or cable reception to satellite reception for existing designs.

"By leveraging Silicon Laboratories mixed-signal RF expertise, we are uniquely positioned to deliver a highly-integrated RF solution to address the needs of DBS equipment makers," said Dave Bresemann, vice president of Silicon Laboratories. "The satellite broadcast market is a large opportunity for the company with many difficult RF challenges where we can bring our expertise to bear to provide substantial improvements in system cost and performance."

Pricing and Availability

Samples of the SiRX family are available now in a 6 x 8 mm, lead-free, RoHS compliant 44-pin QFN package with full production in the second quarter of 2006. Pricing for the Si21xx devices starts at $7.37 in quantities of 1K. Silicon Laboratories also provides an evaluation board with the recommended design and layout for $150.

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 October 24, 2005.

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