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SI4707-B20 Datasheet(PDF) 1 Page - Silicon Laboratories |
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SI4707-B20 Datasheet(HTML) 1 Page - Silicon Laboratories |
1 / 30 page Rev. 0.8 6/08 Copyright © 2008 by Silicon Laboratories Si4707-B20 This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Si4707-B20 WEATHER B AND AND SAME D ATA R ECEIVER Features Applications Description The Si4707 is the first digital CMOS weather band and SAME decoder receiver IC to integrate the complete tuner and decoder functionality from antenna input to audio and/or data output. Functional Block Diagram Weather band support (162.4–162.55 MHz) SAME processor Excellent SAME sensitivity Byte-wise data quality metrics Advanced error correction 1050 Hz alert tone detection Excellent real-world performance Freq synthesizer with integrated VCO Automatic frequency control (AFC) Automatic gain control (AGC) Adaptive noise suppression WB digital tuning Low-IF direct conversion with no external ceramic filters Programmable reference clock Volume control Receive signal quality indicators (RSSI and SNR) 2-wire and 3-wire control interface Integrated LDO regulator 2.7 to 5.5 V supply voltage Firmware upgradeable 3 x 3 x 0.55 mm 20-pin QFN package Pb-free/RoHS compliant Emergency radios Table and portable radios Stereos Mini/micro systems Portable media players Boom boxes Cellular handsets Modules Clock radios Mini HiFi ADC ADC Si4707 DSP DAC DAC ROUT LOUT AFC GPO RFGND LNA FMI AGC PGA RCLK REG VDD 2.7–5.5 V Weather Band Antenna XTAL OSC 32.768 kHz 0/90 CONTROL INTERFACE RSSI / SNR SAME GPO Patents pending Notes: 1. To ensure proper operation and receiver performance, follow the guidelines in “AN383: Si47xx Antenna, Schematic, Layout, and Design Guidelines.” Silicon Laboratories will evaluate schematics and layouts for qualified customers. 2. Place Si4707 as close as possible to antenna jack and keep the FMI traces as short as possible. Ordering Information: See page 22. Pin Assignments GND PAD 1 2 3 17 18 19 20 11 12 13 14 6 7 8 9 4 5 16 10 15 NP2 LOUT ROUT GND RST NC NP1 VDD FMI RFGND Si4707-B20-GM (Top View) |
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