Si4712/13 FM Radio Transmitter ICs

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Si4712/13 Block Diagram

​The Si4712/13 ICs are the industry's first 100% CMOS FM radio transmitters with an integrated receiver measure receive signal strength. The devices leverage Silicon Labs’ proven Si4700/01 FM receiver 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 Si4712/13 FM transmitter offers industry-leading size, performance, low power consumption and ease of use.

The Si4712/13’s 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 Si4712/13 ICs.

The Si4713 IC 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 Si4713 IC enables data such as artist name and song title to be transmitted to an RDS/RBDS receiver.

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

 

 

Features

  • Integrated receiver for receive power measurement
  • 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
 

Applications

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

Documentation    Expand All   Collapse All

 
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Data Sheet (1)

Document NameDescriptionVersionLast Updated
Si4712-13-B30.pdf
Si4712-13-B30 Data SheetRev 1.1

Data Short (1)

Document NameDescriptionVersionLast Updated
Si4712-13_short.pdf
Si4712-13 FM Radio Transmitter with Receive Power Scan040308

User Guides (1)

Document NameDescriptionVersionLast Updated
Si47xxEVB.pdf
Si47xx-EVB User Guide0.82/8/2012

Application Notes (6)

Document NameDescriptionVersionLast Updated
AN299.pdf
AN299: External 32.768 kHz Crystal Oscillator0.1
AN307.pdf
AN307: Si4712/13/20/21 Receive Power Scan Primer0.2
AN332.pdf
AN332: Si47xx Programming Guide0.812/1/2011
AN346.pdf
AN346: Si47xx Evaluation Board Quick-Start Guide0.1
AN383.pdf
AN383: Si47xx Antenna, Schematic, Layout and Design Guidelines0.612/3/2011
AN388.pdf
AN388: Si470/1x/2x/3x/4x Evaluation Board Test Procedure0.2

White Papers (1)

Document NameDescriptionVersionLast Updated
FMTutorial.pdf
FM Tutorial0926089/26/2008

PCN (4)

Document NameDescriptionVersionLast Updated
1105271 Si4700 4701-Bxx Si4710 4713 20-Axx Si4706-C31 Si4733-C30 Si4784 4785 EOL LTB std.pdf
1105271 Si4700 4701-Bxx Si4710 4713 20-Axx Si4706-C31 Si4733-C30 Si4784 4785 EOL LTB std
1110251 Si47xx-B20 B30 B31 C40 D50 D60 3x3mm QFN Change to Copper Wire in ASEKR std.pdf
1110251 Si47xx-B20 B30 B31 C40 D50 D60 3x3mm QFN Change to Copper Wire in ASEKR std
1104011-Cancelled-ASEKR Die Bond Adhesive – Japan Earthquake and Tsunami Disaster Recovery.pdf
Cancelled-ASEKR Die Bond Adhesive – Japan Earthquake and Tsunami Disaster Recovery
1001251-Si471x_and_Si472x_Transition_revA_to_revB_Std.pdf
Si471x_and_Si472x_Transition_revA_to_revB_Std

Design Tools    Expand All   Collapse All

 
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Software (1)

Document NameDescriptionVersionUpdated
AN332_Si47xxExampleCode.zip
AN332SW0.31/24/2009

Training (1)

Document NameDescriptionVersionUpdated
Minimize BOM webinar.pdf
Minimize Your BOM Cost

Product Matrix


Part Number Available DocumentsDescriptionDig I/ORDS Support
Si4712Data Short
Errata
FM radio transmitter with digital audio compression Receive Power Scan (RPS)YesNo
Si4713Data Short
Errata
FM radio transmitter with digital audio compression Receive Power Scan (RPS)YesYes

​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

 

Training & Resources

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The Class D audio driver interactive demonstration allows you to see the sound quality performance of the Si824x Class D audio driver over the audible spectrum. The demo shows the total harmonic distortion + noise (THD + N) ratio, a universal measure of sound quality for audio amplifiers.


Featured White Papers

Key Requirements for Multi-Tuner Automotive Radio Designs

Automotive OEMs and Tier 1 suppliers understand that consumers expect a superior in-vehicle audio experience and are responding by designing sophisticated infotainment systems. The radio components used in today's vehicles need to be cost-effective while meeting rigorous automotive levels of performance. With the advent of multi-tuner automotive infotainment systems, car radio developers must now consider a wide range of performance requirements and new technologies in their designs.

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