Si4708/09 Tiny FM Radio Receivers

As the world's smallest FM receiver solution, the Silicon Labs Si4708/09 FM radio receiver family of ICs increases the ease and attractiveness of adding FM radio reception to mobile devices.​  Requiring only 6.25 mm² of board space, the Si4708/09 ICs are the world's smallest FM receivers offering a minimum component count, flexible and proven programmability, and superior, proven performance.  

The Si4708/09 leverages our highly successful and patented Si4700/01/02/03 FM tuner and is software-compatible to existing Si4700/01/02/03 FM tuner designs. The Si4708/09 ICs benefit from proven digital integration and 100% CMOS process technology, resulting in a completely integrated solution. The Si4708/09 has highly flexible functionality catering to the subjective nature of audio preferences and variable FM broadcast environments worldwide. 


  • Worldwide FM band support (76–108 MHz)
  • Automatic frequency control (AFC)
  • Automatic gain control (AGC)
  • Excellent overload immunity
  • Signal strength measurement
  • Digital low-IF receiver

Si4708/09 Product Matrix

Part Number Data Sheet Description Tuning Method Display Method Mono/Stereo RDS FM AM SW LW WB TX EN55020
Ultra Small Pack FM Receiver Digital Digital Stereo No Yes No No No No No No
Ultra Small Pack FM Receiver Digital Digital Stereo Yes Yes No No No No No No
Contact Sales Contact Sales
Loading Results