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Si4731-B20 Datasheet Preview

Si4731-B20 Datasheet

BROADCAST MULTI-BAND RADIO RECEIVER

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Si4730/31-B20
BROADCAST AM/FM RADIO RECEIVER
Features
Worldwide FM band support
EN55020 compliant
(76–108 MHz)
No manual alignment necessary
Worldwide AM band support
Programmable reference clock
(520–1710 kHz)
Volume control
Excellent real-world performance
Programmable soft mute control
Freq synthesizer with integrated VCO RDS/RBDS processor (Si4731 only)
Advanced AM/FM seek tuning
Optional digital audio output (Si4731
Automatic frequency control (AFC)
only)
Automatic gain control (AGC)
2-wire and 3-wire control interface
Integrated LDO regulator
2.7 to 5.5 V supply voltage
Digital FM stereo decoder
Firmware upgradeable
Programmable de-emphasis
Wide range of ferrite loop sticks and
Adaptive noise suppression
air loop antennas supported
AM/FM digital tuning
3 x 3 x 0.55 mm 20-pin QFN package
Pb-free/RoHS compliant
Applications
Table and portable radios
Stereos
Mini/micro systems
CD/DVD players
Portable media players
Boom boxes
Cellular handsets
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.
Ordering Information:
See page 29.
Pin Assignments
Si4730/31-GM
(Top View)
NC 1
FMI 2
RFGND 3
AMI 4
RST 5
6
20 19 18 17 16
15 DOUT
GND
PAD
14 LOUT
13 ROUT
12 GND
7 8 9 10 11 VDD
Functional Block Diagram
AMI
AM
ANT RFGND
FM
ANT
FMI
2.7– 5.5 V
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
1.5–3.6 V
Patents pending
Notes:
1. To ensure proper operation and
receiver performance, follow the
guidelines in “AN383: Si47xx
Universal Layout Guide.” Silicon
Laboratories will evaluate
schematics and layouts for qualified
customers.
2. Place Si4730/31 as close as
possible to antenna jack and keep
the FMI and AMI traces as short as
possible.
Rev. 1.0 2/08
Copyright © 2008 by Silicon Laboratories
Si4730/31-B20




Silicon Laboratories

Si4731-B20 Datasheet Preview

Si4731-B20 Datasheet

BROADCAST MULTI-BAND RADIO RECEIVER

No Preview Available !

Si4730/31-B20
2 Rev. 1.0


Part Number Si4731-B20
Description BROADCAST MULTI-BAND RADIO RECEIVER
Maker Silicon Laboratories
Total Page 30 Pages
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