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SI4734-C40-GM

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42
Rev. 1.0 12/09 Copyright © 2009 by Silicon Laboratories Si4734/35-C40
Si4734/35-C40
BROADCAST AM/FM RADIO RECEIVER
Features
Applications
Description
The Si4734/35 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
Worldwide FM band support
(64–108 MHz)
Worldwide AM band support
(520–1710 kHz)
SW band support
(2.3–26.1 MHz)
LW band support
(153–279 kHz)
Excellent real-world performance
Freq synthesizer with integrated VCO
Advanced seek tuning
Automatic frequency control (AFC)
Automatic gain control (AGC)
Digital FM stereo decoder
Programmable AVC max gain
Programmable de-emphasis
Seven selectable AM channel filters
AM/FM/SW/LW digital tuning
EN55020 compliant
No manual alignment necessary
Programmable reference clock
Volume control
Adjustable soft mute control
RDS/RBDS processor (Si4735)
Optional digital audio out (Si4735)
2-wire and 3-wire control interface
Integrated LDO regulator
2.0 to 5.5 V supply voltage (SSOP)
2.7 to 5.5 V supply voltage (QFN)
Wide range of ferrite loop sticks and
air loop antennas supported
QFN and SSOP packages
RoHS compliant
Table and portable radios
Stereos
Mini/micro systems
CD/DVD players
Boom boxes
Modules
Clock radios
Mini HiFi
Entertainment systems
ADC
ADC
Si4734/35
DSP
DAC
DAC
FMI
FM / SW
ANT
VIO
1.85-3.6 V
SCLK
SDIO
CONTROL
INTERFACE
SEN
RST
ROUT
LOUT
LDO
VDD
GND
2.7–5.5 V (QFN)
2.0–5.5 V (SSOP)
RDS
(Si4735)
AM / LW
ANT
RFGND
AMI
LNA
LNA
LOW-IF
DIGITAL
AUDIO
(Si4735)
DOUT
DFS
GPO/DCLK
AGC
AGC
AFC
RCLK
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.
Ordering Information:
See page 32.
Pin Assignments
GND
PAD
1
2
3
17181920
11
12
13
14
6
7 8 9
4
5
16
10
15
GPO2/INT
VIO
DOUT
LOUT
ROUT
GNDRST
NC
AMI
RCLK
SDIO
VDD
FMI
RFGND
GPO3/DCLK
NC
GPO1
DFS
SCLK
SEN
Si4734/35 (SSOP)
LOUT
ROUT
DBYP
VIO
GPO2/INT
GPO3/DCLK
DOUT
DFS
1
2
3
4
5
6
7
8
9
10
11
12
GPO1
VDD
SDIO
NC
NC
RCLK
SEN
FMI
RFGND
SCLK
GND
NC
NC
RST
GND
AMI
24
23
22
21
20
19
18
17
16
15
14
13
Si4734/35 (QFN)
Si4734/35-C40
2 Rev. 1.0
Si4734/35-C40
Rev. 1.0 3
TABLE OF CONTENTS
Section Page
1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2. Typical Application Schematic (QFN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
3. Typical Application Schematic (SSOP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4. Bill of Materials (QFN/SSOP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
5. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
5.1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
5.2. Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
5.3. FM Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
5.4. AM Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
5.5. SW Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
5.6. LW Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
5.7. Digital Audio Interface (Si4735 Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
5.8. Stereo Audio Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
5.9. De-emphasis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
5.10. Stereo DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
5.11. Soft Mute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
5.12. RDS/RBDS Processor (Si4735 Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
5.13. Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
5.14. Seek . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
5.15. Reference Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
5.16. Control Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
5.17. GPO Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
5.18. Firmware Upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26
5.19. Reset, Powerup, and Powerdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
5.20. Programming with Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
6. Commands and Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
7. Pin Descriptions: Si4734/35-GM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
8. Pin Descriptions: Si4734/35-GU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
9. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
10. Package Markings (Top Marks) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
10.1. Si4734/35 Top Mark (QFN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
10.2. Top Mark Explanation (QFN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
10.3. Si4734/35 Top Mark (SSOP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
10.4. Top Mark Explanation (SSOP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
11. Package Outline: Si4734/35 QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
12. PCB Land Pattern: Si4734/35 QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
13. Package Outline: Si4734/35 SSOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
14. PCB Land Pattern: Si4734/35 SSOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
15. Additional Reference Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42

SI4734-C40-GM

Mfr. #:
Buy SI4734-C40-GM
Manufacturer:
Silicon Labs
Description:
RF Receiver Si4734 rev C Broadcast AM/FM/SW/LW Radio Receiver 3x3x0.55 20-pin QFN, lead free
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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