SI4730-D60 Datasheet, PDF (1/3 Pages) Silicon Laboratories – Broadcast AM/FM Radio Receiver

Si4730/31-D60
Broadcast AM/FM Radio Receiver
Description
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.
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.
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.
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.
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.
Features
- 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
- 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
- Digital FM stereo decoder
- Integrated LDO regulator
- 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
FM / SW
ANT
RIN
LIN
FMI
AM / LW
ANT
AMI
RFGND
2.7~5.5 V (QFN)
2.0~5.5 V (SSOP) _VA
+
GND
LNA
AGC
LNA
AGC
LDO
Mux
Mux
Si473x-D60
RDS
(Si4731)
LOW -IF
D IG IT A L
AUDIO
DOUT
DFS
GPO/DCLK
ADC
DAC
DSP
ADC
DAC
ROUT
LOUT
AFC
CONTROL
IN T E R F A C E
VD
1.62 - 3.6 V
Pin Assignments
Si473x (QFN)
NC 1 20 19 18 17 16
FMI 2
15 DIN
RFGND 3
AMI 4
GND
PAD
14 LOUT/DFS
13 ROUT/DOUT
RST 5
12 GND
6 7 8 9 10 11 VDD
Si473x (SSOP)
DOUT/[RIN] 1
DFS/[LIN] 2
GPO3/[DCLK] 3
GPO2/[INT] 4
GPO1 5
NC
6
NC 7
FMI 8
RFGND 9
NC 10
NC 11
AMI 12
24 LOUT/[DFS]
23 ROUT/[DOUT]
22 DBYP
21 VA
20 VD
19 RCLK
18 SDIO
17 SCLK
16 SEN
15 RST
14 GND
13 GND
AM/FM Receiver
Copyright © 2010 by Silicon Laboratories
9.17.10