SI4736-C40-GUR Datasheet, PDF (1/42 Pages) Silicon Laboratories – BROADCAST AM/FM RADIO RECEIVER

Si4736/37/38/39-C40
BROADCAST AM/FM RADIO RECEIVER
Features
 NOAA weather band support
 AM/FM/WB digital tuning
(162.4–162.55 MHz)
 No manual alignment necessary
 Worldwide FM band support
 Programmable reference clock
(64–108 MHz)
 Volume control
 Worldwide AM band support
 Adjustable soft mute control
(520–1710 kHz) (Si4736/37)
 RDS/RBDS processor (Si4737/39)
 1050 Hz alert tone detection
 Optional digital audio out (Si4737/39)
 Excellent real-world performance
 2-wire and 3-wire control interface
 Freq synthesizer with integrated VCO _{ Integrated LDO regulator}
 Advanced AM/FM seek tuning
 2.0 to 5.5 V supply voltage (SSOP)
 Automatic frequency control (AFC) _{ 2.7 to 5.5 V supply voltage (QFN)}
 Automatic gain control (AGC)
 Wide range of ferrite loop sticks and
 Digital FM stereo decoder
air loop antennas supported
 Programmable AVC max gain
 QFN and SSOP packages
 Programmable de-emphasis
 RoHS compliant
Applications
 Emergency radios
 Table and portable radios
 Stereos
 Mini/micro systems
 Boom boxes
 Modules
 Clock radios
 Mini HiFi
Description
The Si4736/37/38/39 is the first digital CMOS AM/FM radio receiver IC that
integrates the complete tuner function from antenna input to audio output.
Functional Block Diagram
AMI
AM
ANT
RFGND
FM/
WB
ANT
FMI
2.7– 5.5 V (QFN)
2.0– 5.5 V (SSOP) VDD
GND
LNA
AGC
LNA
AGC
LDO
Si473x
RDS
(Si4737/
39)
LOW-IF
DIGITAL
AUDIO
(Si4737/
39)
DOUT
DFS
GPO/DCLK
ADC
DAC
DSP
ADC
DAC
ROUT
LOUT
AFC
CONTROL
INTERFACE
VIO
1.85–3.6 V
Ordering Information:
See page 32.
Pin Assignments
Si4736/37/38/39 (QFN)
NC 1 ^{20 19 18 17} 16
FMI 2
15 DOUT
RFGND 3
AMI 4
GND
PAD
14 LOUT
13 ROUT
RST 5
12 GND
6 _{7 8 9 10} 11 VDD
Si4736/37 (SSOP)
DOUT 1
DFS 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
23 ROUT
22 DBYP
21 VDD
20 VIO
19 RCLK
18 SDIO
17 SCLK
16 SEN
15 RST
14 GND
13 GND
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.
Rev. 1.0 12/09
Copyright © 2009 by Silicon Laboratories
Si4736/37/38/39-C40