Si4710/11 FM Radio Transmitter ICs

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Si4710/11 Block Diagram

​The Si4710/11 FM radio transmitter ICs are the industry's first 100% CMOS, single-chip FM transmitters. The devices leverage Silicon Labs’ proven Si4700/01 FM receiver architecture and offer unmatched integration and performance, allowing FM transmit to be added to any portable device with a single chip. As with the Si4700/01 ICs, the Si4710/11 FM transmitters offer industry-leading size, performance, low-power consumption and ease of use.

The Si4710/11 ICs digital integration reduces the required external components of traditional offerings, resulting in a solution requiring only an external inductor and bypass capacitor and PCB space of approximately 15 mm2. High reliability in device manufacturing, improved quality, easy design-in and software programmability are key advantages of the Si4710/11 ICs.

The Si4711 supports the European Radio Data System (RDS) and the US Radio Broadcast Data System (RBDS) standards including all the symbol encoding, block synchronization and error correction functions. Using this feature, the Si4711 enables data such as artist name and song title to be transmitted to an RDS/RBDS receiver.

Users are responsible for adjusting their system’s radiated power levels to comply with local regulations on RF transmission (FCC, ETSI, ARIB, etc).

 

Features

  • Worldwide FM band support (76–108 MHz) for transmit
  • Requires only two external components
  • Frequency synthesizer with integrated VCO
  • Digital stereo modulator
  • Programmable pre-emphasis (50/75 μs)
  • Analog/digital audio interface
  • Programmable reference clock
 

Applications

  • Cellular handsets/hands-free
  • MP3 players
  • Portable audio/video players
  • Wireless speakers
  • Wireless microphones
  • Satellite digital audio radios
  • Personal computers/notebooks
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Documentation

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Design Tools

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Product Matrix


Part Number Available DocumentsDescriptionDig I/ORDS Support
Si4710FM radio transmitter with digital audio compressionYesNo
Si4711FM radio transmitter with digital audio compressionYesYes
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​Superior Performance

The SEMC w980i was named European Imaging and Sound Association's Best Music Phone award for 2008
  

“One incredibly valuable innovation is the built-in FM radio transmitter. This broadcasts phone-based music playback to a standard car radio, even transferring artist and track details via RDS.”  - EISA

 
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