SI4705-C40 Просмотр технического описания (PDF) - Silicon Laboratories
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SI4705-C40 Datasheet PDF : 36 Pages
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Si4704/05-C40
BROADCAST FM RADIO RECEIVER FOR CONSUMER
ELECTRONICS
Features
Worldwide FM band support
Programmable reference clock
(64–108 MHz)
Volume control
Integrated antenna support
Adjustable soft mute control
EN55020 compliant
RDS/RBDS processor (Si4705)
Excellent real-world performance Optional digital audio out (Si4705)
Freq synthesizer with integrated VCO 2-wire and 3-wire control interface
Advanced FM seek tuning
Integrated LDO regulator
Automatic frequency control (AFC) Signal quality measurements
Automatic gain control (AGC)
2.7 to 5.5 V supply voltage
Digital FM stereo decoder
3x3 mm 20-pin QFN package
Minimal BOM
RoHS compliant
Programmable de-emphasis
Applications
Table and portable radios
Stereos
Mini/micro systems
CD/DVD players
Boom boxes
Modules
Clock radios
Mini HiFi
Entertainment systems
Description
The Si4704/05 integrates all functions required for an advanced broadcast FM
radio receiver, from antenna input to stereo audio output.
Functional Block Diagram
Ordering Information:
See page 28.
Pin Assignments
Si4704/05-GM (Top View)
NC 1 20 19 18 17 16
FMI 2
15 DOUT
RFGND 3
LPI 4
GND
PAD
14 LOUT
13 ROUT
RST 5
12 GND
6 7 8 9 10 11 VDD
FM Antenna
FMI
RFGND
LPI
32.768 kHz
RCLK
2.7–5.5 V VDD
LNA
AGC
AFC
REG
0/90
XTAL
OSC
Si4704/05
ADC
DAC
PGA
DSP
ADC
DAC
LOUT
ROUT
RSSI
RDS
(Si4705)
CONTROL
INTERFACE
GPO
DCLK
DOUT
DFS
This product, its features, and/or its
architecture is covered by one or more of
the following patents, as well as other
patents, pending and issued, both
foreign and domestic: 7,127,217;
7,272,373; 7,272,375; 7,321,324;
7,355,476; 7,426,376; 7,471,940;
7,339,503; 7,339,504.
Rev. 1.0 12/09
Copyright © 2009 by Silicon Laboratories
Si4704/05-C40
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