Si4730/31/34/35-D60
B ROADCAST AM/FM/SW/LW R ADIO R ECEIVER
Features
Ordering Information:
See page 31.
Pin Assignments
Si473x-D60 (QFN)
DFS
Seven selectable AM channel filters
AM/FM/SW/LW digital tuning
EN55020 compliant
No manual alignment necessary
Programmable reference clock
Adjustable soft mute control
RDS/RBDS processor (Si4731/35)
Digital audio out
2-wire and 3-wire control interface
Integrated LDO regulator
Wide range of ferrite loop sticks and
air loop antennas supported
QFN and SSOP packages
RoHS compliant
GPO3/[DCLK]
GPO2/[INT]
GPO1
Worldwide FM band support
(64–108 MHz)
Worldwide AM band support
(520–1710 kHz)
SW band support (Si4734/35)
(2.3–26.1 MHz)
LW band support (Si4734/35)
(153–279 kHz)
Excellent real-world performance
Integrated VCO
Advanced AM/FM seek tuning
Automatic frequency control (AFC)
Automatic gain control (AGC)
Digital FM stereo decoder
Programmable de-emphasis
Advanced Audio Processing
NC
20
19
18
17
16
Applications
Table and portable radios
Mini/micro systems
CD/DVD and Blu-ray players
Stereo boom boxes
Modules for consumer electronics
Clock radios
Mini HiFi and docking stations
Entertainment systems
NC
FMI 2
1
14 LOUT/[DFS]
GND
PAD
AMI 4
13 ROUT/[DOUT]
8
9
10
SDIO
RCLK
11 VA
VD
SEN
Description
12 GND
7
SCLK
RST 5
6
The Si473x-D60 digital CMOS AM/FM radio receiver IC integrates the complete
broadcast tuner and receiver function from antenna input to digital audio output.
The device leverages the Silicon Labs broadcast proven digital low-IF
architecture, enabling a cost-effective, digital audio platform for consumer
electronic applications with high TDMA noise immunity, superior radio
performance, and high fidelity audio power amplification.
15 DOUT
RFGND 3
Si473x-D60(SSOP)
LN A
AMI
AD C
M ux
LN A
Rev. 1.2 8/13
VA
5
20
VD
6
19
RCLK
7
18
SDIO
17
SCLK
9
16
SEN
DFS
NC
10
15
RST
G PO /D CLK
NC
11
14
GND
12
13
GND
RO UT
DA C
LO UT
VD
1.62 - 3.6 V
RST
SEN
AFC
SDIO
CO NTR O L
INTER FAC E
SCLK
LD O
DBYP
21
D SP
VA
GND
22
4
8
DA C
AD C
M ux
RCLK
+
3
GPO2/[INT]
FMI
DO UT
DIG ITA L
AU D IO
LO W -IF
AGC
2.7~5.5 V (Q FN )
2.0~5.5 V (SSO P)
GPO3/[DCLK]
AMI
RD S
(S i4731/
35)
FM I
AGC
ROUT/[DOUT]
RFGND
Si473x-D60
R FG N D
LOUT/[DFS]
23
NC
A M / LW
A NT
24
2
NC
FM / SW
AN T
1
DFS
GPO1
Functional Block Diagram
DOUT
Copyright © 2013 by Silicon Laboratories
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.
Si473x-D60
