​Si4702/03 FM Radio Receiver ICs

The Si4702/03 FM radio receiver ICs extend Silicon Labs' Si4700/01 FM tuner family and increase the ease and attractiveness of adding FM radio reception to mobile devices through small size and board area, minimum component count, flexible programmability and superior, proven performance.
The Si4702/03 FM radio receiver ICs leverage Silicon Labs' Si4700/01 FM tuner architecture and are pin-and software-compatible to existing Si4700/01 FM tuner designs. The Si4702/03 ICs benefit from proven digital integration and 100% CMOS process technology, resulting in a completely integrated solution. The highly flexible functionality of these ICs caters to the subjective nature of audio preferences and variable FM broadcast environments worldwide.


  • Worldwide FM band support (76–108 MHz)
  • Seek tuning
  • Automatic frequency control (AFC)
  • Automatic gain control (AGC)
  • Excellent overload immunity
  • Programmable de-emphasis (50/75 µs)
  • Adaptive noise suppression



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Data Sheet (1)

Si4702/Si4703-C19 Broadcast FM Radio Tuner for Portable Applications
1.16/30/20091484 kB

Data Short (1)

Si4702-03-C19 Data Short
0403081018 kB

User Guides (2)

Si4700-01-02-03-EVB User's Guide
0.911/25/20132841 kB
Si47xx-EVB User Guide
0.83/14/20149789 kB

Application Notes (9)

White Papers (3)

PCN (5)

Design Tools

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Software (2)

0.31/24/200968 kB
Release Notes for the Precision Clock (DSPLLsim) EVB Software
7/23/20149 kB
Product Matrix
Part NumberDescriptionTuning MethodDisplay MethodMono/StereoRDSFMAMSWLWWBTXEN55020Datasheet
Si4702FM ReceiverDigitalDigitalStereoNoYesNoNoNoNoNoNo
Si4703FM Receiver w RDSDigitalDigitalStereoYesYesNoNoNoNoNoNo


    • Digital Low-IF Receiver
    ​​The Si4703 receiver incorporates a digital processor for the European Radio Data System (RDS) and the US Radio Broadcast Data System (RBDS) including all required symbol decoding, block synchronization, error detection and error correction functions. RDS enables data such as station identification and song name to be displayed to the user. The Si4703 offers a detailed RDS view and a standard view, allowing adopters to selectively choose granularity of RDS status, data and block errors. Si4703 software is backwards-compatible to the proven Si4701 adopted by leading cell-phone, PND and MP3 manufacturers worldwide.
    ​​The Si4702/03 devices' high level of integration and complete FM system enhance manufacturing quality, improve device yields, and simplify device manufacturing and final testing.


    Product Matrix





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