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.
Features
- 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
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- 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
Applications
- Audio/video receivers
- Consumer electronics
- Boom boxes
- Home theater systems
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