AM/FM模块结合Si477x广播无线电接收机和HD无线电调谐器，采用100%射频CMOS科技，为消费电子行业提供了性能优越的接收机。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.产品特性
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)
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2013-08-09
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