Si4730/31-D60
Broadcast AM/FM Radio Receiver
Description
Features
The Si4730/31 is the industry's first fully integrated, 100%
CMOS AM/FM radio receiver IC. The Si4730/31-D60 AM/
FM radio delivers excellent performance and is simple to
design-in. Available in a small 3 x 3 mm QFN package, the
Si4730/31 offers unmatched integration and PCB space
savings with a minimal number of external components
and no factory tuned components.
- Worldwide FM band support (64–108 MHz)
- Worldwide AM band support (520–1710 kHz)
- AM/FM digital tuning
- EN55020 compliant
- FM multipath detection and mitigation
- FM hi-cut control
- Advanced stereo blend
- AUXIN stereo ADC
Leveraging Silicon Laboratories' proven and patented
digital receiver architecture, the Si4730/31 delivers
superior RF performance and interference rejection in both
AM and FM bands. The high integration and complete
system production test simplifies design-in, increases
system quality, and improves manufacturability.
- No manual alignment required
- Seven selectable AM channel filters
- Advanced AM/FM seek tuning
- Programmable AVC max gain
- Frequency synthesizer with integrated VCO
- Automatic frequency control (AFC)
- Programmable de-emphasis
The Si4730/31 solution includes advanced seek
algorithms, multipath detection and mitigation, adjustable
soft mute, FM hi-cut control, smart tune, and FM stereo
processing. In addition, the Si4730/31 provides an auxiliary
input to support a full digital system architecture.
- Digital FM stereo decoder
- Integrated LDO regulator
The Si4730/31 utilizes digital processing to achieve high
fidelity, optimal performance, and design flexibility. The
chip provides excellent pilot rejection, selectivity, and
unmatched audio performance, and offers both the
manufacturer and the end-user extensive programmability
and flexibility in listening experience.
- Wide range of ferrite and air loop antennas supported
- Advanced FM RDS/RBDS processor
- QFN and SSOP Pb-free/RoHS compliant package
Applications
- Audio video receivers
- Mini/micro systems
- Home theater systems
- Docking stations
- Blu-ray / DVD players
- Table / clock radios
- Boomboxes
The Si4731-D60 incorporates an advanced digital
processor for the European Radio Data System (RDS) and
the North American Radio Broadcast Data System (RBDS)
including
all
required
symbol
decoding,
block
synchronization, error detection, and error correction
functions. Using this feature, the Si4731 enables broadcast
data such as station identification and song name to be
displayed to the end user.
Pin Assignments
Si473x (QFN)
FM / SW
RIN
Si473x-D60
ANT
LIN
20 19 18 17
NC
FMI
1
16
DOUT
2
15 DIN
RDS
(Si4731)
FMI
DIGITAL
AUDIO
RFGND
AMI
3
4
5
14 LOUT/DFS
13 ROUT/DOUT
12 GND
GND
PAD
DFS
LNA
AGC
GPO/DCLK
RST
LOW -IF
DSP
6
11 VDD
10
7
8
9
Mux
AMI
RFGND
ADC
ADC
DAC
DAC
AM / LW
ANT
ROUT
LOUT
LNA
AGC
Si473x (SSOP)
Mux
DOUT/[RIN]
DFS/[LIN]
GPO3/[DCLK]
GPO2/[INT]
GPO1
1
2
24
23
22
21
20
19
18
17
16
15
14
13
LOUT/[DFS]
2.7~5.5 V (QFN)
2.0~5.5 V (SSOP)
ROUT/[DOUT]
VA
3
DBYP
VA
CONTROL
INTERFACE
LDO
AFC
VD
1.62 - 3.6 V
4
+
GND
5
VD
NC
RCLK
SDIO
SCLK
SEN
RST
6
NC
7
FMI
8
RFGND
NC
9
10
11
12
NC
GND
GND
AMI
AM/FM Receiver
Copyright © 2010 by Silicon Laboratories
9.17.10
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