| Type | Subsidiary |
|---|---|
| Industry | ICT / Electronics |
| Founded | 1995 |
| Headquarters | San Jose, California |
| Products | GPS navigation software GPS navigation devices |
| Revenue | 33.0% US$ 329.4 Million (2007)[1] |
| Parent | CSR plc |
| Website | http://sirf.com |
SiRF Technology, Inc. was pioneer in the commercial use of GPS for consumer applications, the company was founded in 1995 and has its headquarters in San Jose, California. The company was acquired by CSR plc in 2009. SiRF manufactures a range of patented GPS chipsets and software for consumer navigation devices and systems. The chips are based on ARM controllers integrated with low-noise radio receivers to decode GPS signals at very low signal levels (typically -160dBm). SiRF chips also support SBAS to allow for differentially corrected positions.
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SiRFstarIII architecture is designed to be useful in wireless and handheld location-based services (LBS) applications, for 2G, 2.5G, 3G asynchronous networks. The SiRFstarIII family comprises the GRF3w RF IC, the GSP3f digital section, and the GSW3 software that is API compatible with GSW2 and SiRFLoc. The chips have been adopted by major GPS manufacturers, including Sony, Garmin, TomTom and Magellan.
SiRFatLas IV is a multifunction location system processor and is meant for entry-level Personal Navigation Devices (PNDs). The SiRFatLas IV is a cheaper version of the very popular, but rather expensive SiRFPrima platform.[2][3] Has GPS/Galileo baseband, LCD touch-screen controller, video input, 10-bit ADC and a high-speed USB 2.0.
SiRFPrima is more expensive than SiRFatLas IV. Is delivered by multimedia support.
On 10 February 2009, UK wireless chip company CSR announced it was buying SiRF in a share deal worth $136 million [4].