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FM tuner solution packs high sensitivity

Posted: 07 Dec 2005 ?? ?Print Version ?Bookmark and Share

Keywords:SigmaTel? STFM1000? FM tuner? processor? STMP3500?

SigmaTel Inc. introduced the STFM1000, its first FM tuner solution designed on an optimized radio architecture for portable multimedia devices, including MP3, portable audio/video and cell phone devices. The new STFM1000 is a companion processor for the company's STMP3500 and soc solution for digital multimedia players" target=_blank>STMP3600 families of SoC solutions and promises to provide customers with superior FM performance. According to the press release, the radio architecture's CMOS implementation provides a reduction in overall system cost and board area by integrating a number of external components typically required by competitive solutions.

Michael Wodopian, SVP of portable SoC group at SigmaTel, added, "This new level of product integration enabled by our optimized radio architecture will provide customers with the best quality and the highest level of integration at the lowest system cost on the market today."

The STFM1000 digitally transmits data to SoCs, resulting in the same audio effects while listening to FM radio that a user experiences while listening to MP3. The optimized radio architecture of the STFM1000 supports a proprietary 2-wire SigmaTel interface for moving FM data, Signal Quality Indicators and RDS to the STMP3600. In addition, the STFM1000 includes a standard 3-wire I?S interface to support the STMP3500 and a number of other SoCs on the market such as those found in many of today's cellphones.

The new FM tuner also features high sensitivity due to its integrated low-noise RF amplifier. The company said this results in better FM performance as well as complex filtering to trade off fidelity for improved noise suppression under poor signal conditions.

SigmaTel will deliver software for the STFM1000 to its customers via its Software Development Kit or as library elements for customers to develop their own applications.




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