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Home » NEWEST Products » New by Manufacturer » Silicon Labs » Silicon Labs Si477x Broadcast Radio Receiver and HD Radio Tuner
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Silicon Labs

Silicon Labs Si477x Broadcast Radio
Receiver and HD Radio Tuner

Silicon Labs Si477x Broadcast Radio Receiver and HD Radio Tuner employs 100% RF CMOS technology to bring outstanding receiver performance to the consumer electronics industry. The Si477x receiver family supports worldwide radio reception. The Si477x incorporates a digital preprocessor 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. The Si4777 supports AM/FM HD radio channel reception with digital (I2S) Zero-IF (ZIF) I/Q outputs for interface to an HD radio processor. The Si477x receiver system specifies a minimal bill of materials, resulting in a small board space requirement and making the solution ideal for any consumer electronics application from single tuner radios to multiple tuner radios.

  • Worldwide FM band support (64-108 MHz)
  • Worldwide AM band support (520-1710 kHz)
  • AM/FM HD Radio support (Si4777 only)
  • Comprehensive signal quality metrics: RSSI, SNR, multipath interference, frequency offset, adjacent channel RSSI,
  • frequency deviation, and image RSSI
  • Advanced patented RDS soft-decision decoder
  • Advanced, patented FM channel equalizer for multipath interference
  • Dynamic AM/FM channel bandwidth control
  • Programmable AM/FM soft mute
  • FM stereo-mono blend
  • FM hi-blend control
  • AM/FM hi-cut control
  • AM lo-cut filter
  • L/R analog and digital (I2S) audio outputs
  • Digital Low-IF architecture
  • Frequency synthesizer with fully integrated PLL-VCO
  • Fully integrated AM/FM front-end including high performance LNA, AGC with integrated resistor and capacitor banks, and RF and IF peak detectors
  • Integrated crystal oscillator
  • Digital (I2S) Zero-IF AM/FM I/Q outputs (Si4777 only)
  • 1.2 to 5 V power supplies

  • Audio/video receivers
  • Consumer electronics
  • Boom boxes
  • Home theater systems


Part Number Package Description FM
1710 kHz)
RDS Analog
Si4770-A20-GM QFN-40 AM/FM RDS, VICS X X X X - - X X
Si4777-A20-GM QFN-40 AM/FM RDS, VICS, HD Tuner X X X X X X X X

Si4770Module-A-EVB Module evaluation kit consists of a Si4770 high-performance CD AM/FM module and Si477x imposter card
Si4770-A-EVB Evaluation board designed to simplify evaluation and speed your overall development time to product launch
Block Diagram
Block Diagram
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