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Si4734-B20 Datasheet Preview

Si4734-B20 Datasheet

BROADCAST AM/FM/SW/LW RADIO RECEIVER

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Si4734/35-B20
BROADCAST AM/FM/SW/LW RADIO RECEIVER
Features
„ Worldwide FM band support
„ No manual alignment necessary
(64–108 MHz)
„ Adjustable channel filters
„ Worldwide AM band support
„ EN55020 complaint
(520–1710 kHz)
„ Programmable reference clock
„ SW band support (2.3–21.85 MHz) „ Digital volume control
„ LW band support (153–279 KHz)
„ Adjustable soft mute control
„ Excellent real-world performance
„ RDS/RBDS processor (Si4735 only)
„ Freq synthesizer with integrated VCO „ Optional digital audio out (Si4735 only)
„ Automatic frequency control (AFC) „ 2-wire and 3-wire control interface
„ Automatic gain control (AGC)
„ 2.7 to 5.5 V supply voltage
„ Integrated LDO regulator
„ Wide range of ferrite loop sticks and air
„ Digital FM stereo decoder
loop antennas supported
„ Programmable de-emphasis
„ 3 x 3 x 0.55 mm 20-pin QFN package
„ Adaptive noise suppression
z Pb-free/RoHS compliant
„ AM/FM/SW/LW digital tuning
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 Si4734/35 is the first digital CMOS AM/FM/SW/LW radio receiver IC that
integrates the complete tuner function from antenna input to audio output.
Ordering Information:
See page 31.
Pin Assignments
Si4734/35-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
FM / SW
ANT
FMI
AM / LW
ANT
AMI
RFGND
2.7 - 5.5 V
VDD
GND
LNA
AGC
LNA
AGC
LDO
Si4734/35
RDS
(Si4735)
LOW-IF
DIGITAL
AUDIO
(Si4735)
DOUT
DFS
GPO/DCLK
ADC DAC
DSP
ADC DAC
ROUT
LOUT
AFC
CONTROL
INTERFACE
VIO
1.5-3.6V
Patents pending
Notes:
1. To ensure proper operation and
receiver performance, follow the
guidelines in “AN383: Antenna
Selection and Universal Layout
Guide.” Silicon Laboratories will
evaluate schematics and layouts for
qualified customers.
2. Place Si4734/35 as close as
possible to antenna jack and keep
the FMI and AMI traces as short as
possible.
Rev. 1.0 4/08
Copyright © 2008 by Silicon Laboratories
Si4734/35-B20




Silicon Laboratories

Si4734-B20 Datasheet Preview

Si4734-B20 Datasheet

BROADCAST AM/FM/SW/LW RADIO RECEIVER

No Preview Available !

Si4734/35-B20
2 Rev. 1.0


Part Number Si4734-B20
Description BROADCAST AM/FM/SW/LW RADIO RECEIVER
Maker Silicon Laboratories
Total Page 30 Pages
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