Silicon Labs Si473x: Integrated AM/FM-radio receiver combines antenna input, audio output

Integrating an antenna input and an audio output in a monolithic IC, the Si473x AM/FM-radio-receiver family requires no manual alignment. Requiring two external components in a 0.15×0.15-cm board, the digital architecture supports a variety of antennas with an on-chip varactor and auto calibration. Features include high sensitivity and selectivity, an adjustable soft mute, and support for the European RDS (Radio Data System) and the US RBDS (Radio Broadcast Data System), enabling the display of station ID and song name. Available in a 3×3-mm QFN-20 package, the Si4731 costs $5.53 (10,000), and an evaluation board is available for $150.

Silicon Labs, www.silabs.com