SI4730-C40-GM Datasheet, PDF (1/42 Pages) Silicon Laboratories – BROADCAST AM/FM RADIO RECEIVER

Si4730/31-C40
BROADCAST AM/FM RADIO RECEIVER
Features
 Worldwide FM band support
 EN55020 compliant
(64–108 MHz)
 No manual alignment necessary
 Worldwide AM band support
 Programmable reference clock
(520–1710 kHz)
 Volume control
 Excellent real-world performance
 Adjustable soft mute control
 Freq synthesizer with integrated VCO _{ RDS/RBDS processor (Si4731)}
 Advanced AM/FM seek tuning
 Optional digital audio out (Si4731)
 Automatic frequency control (AFC) _{ 2-wire and 3-wire control interface}
 Automatic gain control (AGC)
 Integrated LDO regulator
 Digital FM stereo decoder
 2.0 to 5.5 V supply voltage (SSOP)
 Programmable AVC max gain
 2.7 to 5.5 V supply voltage (QFN)
 Programmable de-emphasis
 Wide range of ferrite loop sticks and
 Seven selectable AM channel filters air loop antennas supported
 AM/FM digital tuning
 QFN and SSOP packages
 RoHS compliant
Applications
 Table and portable radios
 Stereos
 Mini/micro systems
 CD/DVD players
 Boom boxes
 Modules
 Clock radios
 Mini HiFi
 Entertainment systems
Description
The Si4730/31 is the first digital CMOS AM/FM radio receiver IC that integrates
the complete tuner function from antenna input to audio output.
Functional Block Diagram
AMI
AM
ANT
RFGND
FM
ANT
FMI
2.7– 5.5 V (QFN)
2.0– 5.5 V (SSOP) _VDD
GND
LNA
AGC
LNA
AGC
LDO
Si473x
RDS
(Si4731)
LOW-IF
DIGITAL
AUDIO
(Si4731)
DOUT
DFS
GPO/DCLK
ADC
DAC
DSP
ADC
DAC
ROUT
LOUT
AFC
CONTROL
INTERFACE
VIO
1.85–3.6 V
Ordering Information:
See page 31.
Pin Assignments
Si4730/31 (QFN)
NC 1 ^{20 19 18 17} 16
FMI 2
15 DOUT
RFGND 3
AMI 4
GND
PAD
14 LOUT
13 ROUT
RST 5
12 GND
6 _{7 8 9 10} 11 VDD
Si4730/31 (SSOP)
DOUT 1
DFS 2
GPO3/DCLK 3
GPO2/INT 4
GPO1 5
NC 6
NC 7
FMI 8
RFGND 9
NC 10
NC 11
AMI 12
24 LOUT
23 ROUT
22 DBYP
21 VDD
20 VIO
19 RCLK
18 SDIO
17 SCLK
16 SEN
15 RST
14 GND
13 GND
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
Si4730/31-C40