Silicon Laboratories Inc. has expanded its FM tuner product family with the introduction of the Si4702 and Si4703. According to Silicon Laboratories, the Si4702/03 devices leverage patented low-IF digital architecture to offer superior performance, integration, size and cost. The Si4702/03 devices are available in a tiny 3 mm x 3 mm x 0.55 mm package, reducing PC-board area by about 75%. The FM tuners are aimed at cell phones, MP3/media players, stand-alone FM radios and a variety of other portable devices where performance, low power consumption and a small footprint are essential.

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To deliver unmatched performance, the FM radio tuners leverage a patented, field-proven, low-IF digital architecture and embedded processor technology, reducing cost and enabling superior sound quality performance and adjustability in critical FM receiver specifications. The Si4702/03 devices offer selectivity and sensitivity as well as easily adjustable seek, soft mute and blend, all of which are fundamental to superior performance in highly variable FM broadcast environments. Plus, the Si4703 addresses feature-rich devices by offering additional detection and processing of the Radio Data Service (RDS) and Radio Broadcast Data Service (RBDS) information. The Si4703 enables data such as the station ID and song name to be displayed to the user. The Si4702/03 FM tuners are software driver-compatible with the Si4700/1 FM tuners.

The Si4702 and Si4703 are available in a 20-pin quad flat no-lead (QFN) package. Pricing for the Si4702 is $2.60, in quantities of 10K. And for the Si4703, it is $2.99 in similar quantities. Volume production is expected in the fourth quarter. An evaluation board is available for $150.