SI4706-C31 Datasheet, PDF (1/36 Pages) Silicon Laboratories – HIGH-PERFORMANCE FM RDS/RBDS RECEIVER

Si4706-C31
HIGH-PERFORMANCE FM RDS/RBDS RECEIVER
Features
 Worldwide FM band support
(76–108 MHz)
 Advanced patented RDS/RBDS
decoding engine
 Outstanding RDS sensitivity
 Leading RDS synchronization
metrics
 Highly reliable RDS decoder
 RDS reception with FM mono
broadcast
 Received signal quality indicators
 On-chip tuned resonance for
embedded antenna support
 FM multi-path detection and
mitigation
 FM Hi-cut control
 Advanced FM stereo-mono blend
 Automatic gain control (AGC)
 Integrated FM LNA
 Image-rejection mixer
 Frequency synthesizer with
integrated VCO
 Low-IF direct conversion with no
external ceramic filters
 2.7 to 5.5 V supply voltage
 Programmable reference clock
 Stereo audio out
 I²S Digital audio out
 20-pin 3 x 3 mm QFN package
Pb-free/RoHS compliant
Applications
 Cellular handsets
 Portable media devices
 In-car navigation systems
 Dedicated data receiver
 Personal navigation devices (PND)
 GPS-enabled handsets and portable
devices
Description
The high-performance Si4706-C31 FM RDS receiver provides the most advanced
and flexible audio and RDS data processing available for portable devices today.
The 100% CMOS IC integrates the complete FM and data receiver function from
antenna to analog or digital audio and data out in a single 3 x 3 mm 20-pin QFN.
Functional Block Diagram
Half-wavelength
antenna
FMI
Embedded
antenna
LPI
RFGND
32.768 kHz _(TYP)
RCLK
2.7–5.5 V VDD
LNA
AGC
0/90
AFC
REG
XTAL
OSC
ADC
PGA
DSP
ADC
RSSI RDS
CONTROL
INTERFACE
Si4706
DAC
LOUT
DAC
ROUT
GPO
DCLK
DOUT
DFS
Ordering Information:
See page 29.
Pin Assignments
Si4706-GM
(Top View)
NC 1 ^{20 19 18 17} 16
FMI 2
15 DOUT
RFGND 3
LPI 4
GND
PAD
14 LOUT
13 ROUT
RST 5
12 GND
6 _{7 8 9 10} 11 VDD
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
Si4706-C31
Silicon Laboratories Confidential. Information contained herein is covered under non-disclosure agreement (NDA).