Si4734/35 AM/FM/SW/LW Radio Receiver ICs

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Si4734/35 Block Diagram

The Si4734/35 ICs are the industry's first fully integrated, 100% CMOS AM/FM/SW/LW radio receivers. Offering unmatched integration and PCB space savings, the Si4734/35 requires minimal external components and less than 20 mm² of board area, excluding the antenna inputs.

The Si4734/35 AM/FM/SW/LW radio receivers provide the space savings and low-power consumption necessary for portable devices while delivering the high performance and design simplicity desired for all AM/FM/SW/LW solutions.

Leveraging Silicon Labs' proven and patented Si4700/01 FM tuner's digital low intermediate frequency (low-IF) receiver architecture, the Si4734/35 ICs deliver superior RF performance and interference rejection in AM, FM, and shortwave and longwave bands. The high integration and complete system production test simplify design-in, increase system quality and improve manufacturability.


Features

  • Worldwide FM band support (64–108 MHz)
  • Worldwide AM band support (520–1710 kHz)
  • Shortwave band support (2.3–21.85 MHz)
  • Longwave band support (153–279 KHz)
  • Digital FM stereo decoder
  • AM/FM/SW/LW digital tuning
 

Applications

Technologies

  • Wide range of ferrite loop sticks and air loop antennas supported
  • Pb-free/RoHS compliant
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Documentation    Expand All   Collapse All

 
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Data Sheet (3)

Document NameDescriptionVersionLast Updated
Si4730-31-34-35-D60.pdf
Si4730-31-34-35-D60 Data Sheet—Ideal for Consumer Electronics (CE). Please use Si4730-31-D50 for Mobile Devices.1.111/28/2011
Not-Rec-for-New-Designs Si4734-35-B20.pdf
Si4734-35-B20 Data Sheet – Not Recommended for New Designs – Please Use Si4730-31-34-35-D601.09/28/2011
Not-Rec-for-New-Designs Si4734-35-C40.pdf
Si4734-35-C40 Data Sheet – Not Recommended for New Designs – Please Use Si4730-31-34-35-D601.09/28/2011

Data Short (1)

Document NameDescriptionVersionLast Updated
Si4734-35_short.pdf
Si4734-35 Data Short04.01.089/28/2011

User Guides (1)

Document NameDescriptionVersionLast Updated
Si47xxEVB.pdf
Si47xx-EVB User Guide0.75/24/2011

Application Notes (6)

Document NameDescriptionVersionLast Updated
AN299.pdf
AN299: External 32.768 kHz Crystal Oscillator0.1
AN332.pdf
AN332: Si47xx Programming Guide0.812/1/2011
AN346_Chinese.pdf
AN346: Si47xx Evaluation Board Quick Start Guide (Chinese)0.1 (Chines4)
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
1105171 Si4704 05 06 30 31 34 35 to revD std.pdf
1105171 Si4704 05 06 30 31 34 35 to revD 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
1205111B Si4704-05-30-31-34-35 datasheet rev 10 to 11.pdf
1205111B Si4704-05-30-31-34-35 datasheet rev 10 to 11
1104011-Cancelled-ASEKR Die Bond Adhesive – Japan Earthquake and Tsunami Disaster Recovery.pdf
Cancelled-ASEKR Die Bond Adhesive – Japan Earthquake and Tsunami Disaster Recovery
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Design Tools    Expand All   Collapse All

 
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Software (1)

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

Training (2)

Document NameDescriptionVersionUpdated
Si473x_Presentation.pdf
Introducing the Si473x Multiband Receiver Family
Minimize BOM webinar.pdf
Minimize Your BOM Cost
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Product Matrix


Part Number Available DocumentsDescriptionDig I/ORDS Support
Si4734Data Sheet
AM/FM/shortwave/longwave radio receiverNoNo
Si4735Data Sheet
AM/FM/shortwave/longwave radio receiverYesYes
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The feature-rich Si4734/35 receiver IC include advanced seek algorithms, soft mute, auto-calibrated digital tuning and FM stereo processing. In addition, the Si4734/35 ICs provide analog or digital audio output and a programmable reference clock. The device supports I2C-compatible 2-wire control interface, SPI and a Si4700/01 backwards-compatible 3-wire control interface.

The Si4734/35 ICs use digital processing to achieve high fidelity, optimal performance and design flexibility. The ICs provide excellent pilot rejection, selectivity and unmatched audio performance and offer both the manufacturer and the end-user extensive programmability and flexibility in the listening experience.

The Si4735 incorporates a digital processor for the European Radio Data System (RDS) and the North American Radio Broadcast Data System (RBDS) including all required symbol decoding, block synchronization, error detection and error correction functions. Using RDS, the Si4735 enables broadcast data such as station identification and song name to be displayed to the user.

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Training & Resources

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