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SI4731-D60 Folha de dados(PDF) 2 Page - Silicon Laboratories |
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SI4731-D60 Folha de dados(HTML) 2 Page - Silicon Laboratories |
2 / 3 page AM/FM Receiver Copyright © 2010 by Silicon Laboratories 9.17.10 Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc. Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders Si4730/31-D60 Broadcast AM/FM Radio Receiver New Si4730/31-D60 Features FM Multipath Detection and Mitigation Provides the ability to detect a multipath situation and maintain audio SNR fidelity. Multipath mitigation is important in RF environments with high signal scatterings such as cities with tall buildings. FM Hi-Cut Control Hi-cut control is employed to increase the audio quality during low SNR and/or multipath situations. Hi-cut on the Si4730/31-D60 improves the sound quality by seamlessly selecting 1 of 7 different audio filters to optimize SNR versus audio frequency range. The end result is lower noise on weak stations and stations suffering from multipath. Advanced Stereo Blend The Si4730/31-D60 uses RSSI, SNR, and multipath to determine the best blend setting, providing an enhanced user listening experience. Utilizing these three metrics, stereo blend is optimized to allow for full stereo in high fidelity situations and a blended or full mono in sub-optimal conditions. Traditional stereo blend only uses the receive signal strength indicator (RSSI) to blend from stereo to mono. Auxiliary Input The optional analog auxiliary input (line-in) eliminates the need for an ADC when using a digital system architecture. The left and right auxiliary inputs get digitized on-chip. Audio output formats include I2S, Left- justified, and Right-justified. Advanced RDS Processor The Si4731-D60 implements an advanced, high-performance RDS processor for demodulation, symbol decoding, block synchronization, error detection, and error correction. The advance RDS decoder provides improved RDS sensitivity, excellent RDS persistence, faster lock, and lower decoder error rates resulting in acquiring RDS information faster and greater data reliability in low SNR environments. Smart Tune The Si4730/31-D60 automatically selects the IF injection side to optimize the SNR. This improves the desired station reception in areas that have large near-in blockers. Selected Electrical Specifications Parameter Symbol Test Condition Min Typ Max Unit FM Input Frequency fRF 64 — 108 MHz AM Input Frequency fRF 520 — 1710 kHz FM Sensitivity with 50 network (S+N)/N = 26 dB — 1.1 — µV EMF RDS Sensitivity — 8 — µV EMF AM Sensitivity (S+N)/N = 26 dB — 25 — µV EMF Input IP3 |f2 – f1| > 1 MHz; f0 = 2 x f1 – f2 — 105 — dBµV EMF FM Adjacent Channel Selectivity ±200 kHz — 50 — dB FM Alternate Channel Selectivity ±400 kHz — 70 — dB FM Audio Stereo Separation 34 42 — dB FM Audio S/N — 63 — dB AM Audio S/N — 56 — dB AM and FM Audio THD — 0.1 — % |
Nº de peça semelhante - SI4731-D60 |
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Descrição semelhante - SI4731-D60 |
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