SI4739-B20-GMR Datasheet, PDF (1/24 Pages) Silicon Laboratories – BROADCAST MULTI-BAND RADIO RECEIVER

Si473x-B20
BROADCAST MULTI-BAND RADIO RECEIVER
Features
 FM band support: 76–108 MHz
 Adaptive noise suppression
 AM band support: 520–1710 kHz  AM/FM digital tuning
 SW band support: 2.3–21.85 MHz  EN55020 compliant
(Si4734/35)
 No manual alignment necessary
 LW band support: 153–279 kHz
 Programmable reference clock
(Si4734/35)
 Volume control
 Weather band support: 162.4–
 Programmable soft mute control
162.55 MHz (Si4736/37/38/39)
 RDS/RBDS processor
 1050 Hz alert tone detection
(Si4731/35/37/39)
(Si4736/37/38/39)
 Optional digital audio output
 Excellent real-world performance
(Si4731/35/37/39)
 Freq synthesizer with integrated VCO _{ 2-wire control interface}
 Advanced seek tuning
 2.7 to 5.5 V supply voltage
 Automatic frequency control (AFC) _{ Firmware upgradeable}
 Automatic gain control (AGC)
 Wide range of ferrite loop sticks and
 Integrated LDO regulator
air loop antennas supported
 Digital FM stereo decoder
 3 x 3 x 0.55 mm 20-pin QFN package
 Programmable de-emphasis
 Pb-free/RoHS compliant
Applications
 Table and portable radios
 Audio video receivers
 Stereos
 Mini/micro systems
 CD/DVD players
 Portable media players
 Cellular handsets
 Emergency radios
 Clock radios
 Modules
 Mini HiFi
 Boom boxes
Si473x Product Selector Guide
Ordering Information:
See page 18.
Pin Assignments
Si473x-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}
Part
Si4730
Si4731
Si4734
Si4735
Si4736
Si4737
Si4738
Si4739
FM
AM
76 – 108 MHz 
76 – 108 MHz 
64 – 108 MHz 
64 – 108 MHz 
76 – 108 MHz 
76 – 108 MHz 
76 – 108 MHz
76 – 108 MHz
RDS SW/LW WB
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Patents Pending
Notes:
1. Place Si473x as close as
possible to antenna jack and
keep the FMI and AMI traces as
short as possible.
2. Contact your local sales
representatives for more
information or to obtain
application notes.
Rev. 0.5 10/08
Copyright © 2008 by Silicon Laboratories
Si473x-B20