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SI4745 Arkusz danych(PDF) 1 Page - Silicon Laboratories |
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SI4745 Arkusz danych(HTML) 1 Page - Silicon Laboratories |
1 / 2 page AM/FM Receiver Copyright © 2008 by Silicon Laboratories 10.23.08 ADC ADC Si474x DSP DAC DAC AMI VIO CNTRL RST ROUT LOUT LDO VDD GND 3.0–3.6 V RDS GND FMI LNA LNA DIGITAL AUDIO DOUT DFS DCLK AGC AGC AFC WEAK SIGNAL CONDITION QUALITY DETECTOR AGC GPO1-3 Si4740/41/42/43/44/45 Automotive AM/FM Radio Receiver Description The Si474x receiver family applies 100% RF CMOS technology to bring digital low-IF radio technology to the automotive receiver market. The Si474x receiver family builds on Silicon Laboratories’ highly successful broadcast audio radio products, offering design simplicity, unmatched integration, programmability, and automotive quality and reliability. The Si474x receiver family supports world-wide FM bands from 64–108 MHz and AM bands from 520–1710 kHz. The Si474x supports AM/FM, weather band, shortwave, and longwave radio bands. All odd-numbered part numbers in the family support international RDS/RBDS protocols. The Si474x family leverages Silicon Laboratories’ patented digital architecture, delivering superior RF performance and interference rejection. The proven digital radio technology provides excellent sensitivity in weak signal environments, and superb selectivity and inter-modulation immunity in strong signal environments. The solution offers programmable AM/FM channel spacing and filters, auto-calibrated digital tuning, and proven AM/FM seek functionality based on multiple signal quality and band parameters. The family offers highly flexible and advanced audio features such as noise blanking, programmable soft mute, and multi-path detection and mitigation. The Si474x receiver system has a minimal bill of materials requiring a small amount of board space. The high level of integration provides a complete, tested broadcast audio receiver that is ideal for primary automotive radio receivers. Features - Worldwide FM band support (64–108 MHz) - Worldwide AM band support (520–1710 kHz) - Shortwave, longwave support (Si4742/43/44/45 only) - Weather band support (Si4742/43 only) - Received signal quality indicators (RSSI, SNR, adjacent channel, wideband AM) - Multipath detection/mitigation - AM and FM noise blankers (Si4742/43/44/45 only) - AM and FM programmable seek tuning - AM and FM programmable soft mute control - AM and FM adjustable channel bandwidth filters - FM stereo-mono blending - FM Hi-Cut control (Si4742/43/44/45 only) - Digital FM stereo decoder - RDS/RBDS processor (Si4741/43/45 only) - Automatic frequency control (AFC) - Automatic gain control (AGC) - Image rejection mixer - Frequency synthesizer with integrated VCO - Low-IF direct conversion with no ceramic filters - Analog or digital (I2S) outputs - 3.0 to 3.6 V supply voltage - Programmable reference clock - AECQ-100 certified • –40 to 85 ºC operation - 24-pin 4 x 4 mm QFN package • Pb-free/RoHS compliant Applications - OEM automotive radio systems - After-market automotive radio systems - Automotive radio modules |
Podobny numer części - SI4745 |
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Podobny opis - SI4745 |
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