SI4702-C19 Просмотр технического описания (PDF) - Silicon Laboratories
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SI4702-C19 Datasheet PDF : 46 Pages
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Si4702/03-C19
BROADCAST FM RADIO TUNER FOR PORTABLE APPLICATIONS
Features
This data sheet applies to
Si4702/03-C Firmware 19 and
greater
Worldwide FM band support
(76–108 MHz)
Digital low-IF receiver
Frequency synthesizer with
integrated VCO
Seek tuning
Automatic frequency control (AFC)
Automatic gain control (AGC)
Excellent overload immunity
Signal strength measurement
Programmable de-emphasis
(50/75 µs)
Adaptive noise suppression
Volume control
Line-level analog output
32.768 kHz reference clock
2-wire and 3-wire control
interface
2.7 to 5.5 V supply voltage
Integrated LDO regulator
allows direct connection to
battery
3 x 3 mm 20-pin QFN package
Pb-free/RoHS compliant
RDS/RBDS Processor (Si4703)
Integrated crystal oscillator
Applications
Cellular handsets
MP3 players
Portable radios
Description
USB FM radio
PDAs
Notebook PCs
Portable navigation
Consumer electronics
The Si4702/03 integrates the complete tuner function from antenna input
to stereo audio output for FM broadcast radio reception.
Functional Block Diagram
Ordering Information:
See page 38.
Pin Assignments
(Top View)
Si4702/03-GM
NC 1 20 19 18 17 16
FMIP 2
15 GND
RFGND 3
GND 4
GND
PAD
14 LOUT
13 ROUT
RST 5
12 GND
67
8
9 10 11 VD
Headphone
Cable
FMIP
RFGND LNA
Si4702/03
I
ADC
DSP
DAC
LOUT
PGA
FILTER
DEMOD
Q
MPX
ADC AUDIO
DAC
ROUT
AGC
0 / 90
32.768 kHz
RCLK TUNE
AFC
2.7–5.5 V VA
VD REG
XTAL
OSC
LOW-IF GPIO
RDS
(Si4703)
RSSI
GPIO
VIO
RST
SDIO
SCLK
SEN
U.S. and International Patents
pending—Abbreviated U.S. Patent
List:
7272375, 7127217, 7272373,
7272374, 7321324, 7339503,
7339504, 7355476, 7426376,
7436252, 7471940
Rev. 1.1 7/09
Copyright © 2009 by Silicon Laboratories
Si4702/03-C19
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