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SI4702 Datasheet
资料介绍
FM SI4702 规格书，要开发FM功能，使用该芯片的用户可以参考
部分文件列表
| 文件名 | 大小 |
| SI4702-03-C19.pdf | 1M |
部分页面预览
（完整内容请下载后查看）Si4702/03-C19
BROADCAST FM RADIO TUNER FOR PORTABLE APPLICATIONS
Features
This data sheet applies to
Si4702/03-C Firmware 19 and
greater
Adaptive noise suppression
Volume control
Line-level analog output
32.768 kHz reference clock
Worldwide FM band support
(76–108 MHz)
2-wire and 3-wire control
interface
Digital low-IF receiver
Frequency synthesizer with
integrated VCO
2.7 to 5.5 V supply voltage
Ordering Information:
Integrated LDO regulator
allows direct connection to
battery
Seek tuning
See page 38.
Automatic frequency control (AFC)
Automatic gain control (AGC)
Excellent overload immunity
Signal strength measurement
3 x 3 mm 20-pin QFN package
Pb-free/RoHS compliant
Pin Assignments
(Top View)
RDS/RBDS Processor (Si4703)
Integrated crystal oscillator
Programmable de-emphasis
Si4702/03-GM
(50/75 µs)
Applications
Cellular handsets
MP3 players
USB FM radio
Portable navigation
1
2
20
19
18
17 16
15 GND
NC
PDAs
Consumer electronics
FMIP
Portable radios
Notebook PCs
RFGND
GND
3
4
14
13
LOUT
ROUT
GND
PAD
Description
The Si4702/03 integrates the complete tuner function from antenna input
to stereo audio output for FM broadcast radio reception.
RST
5
6
12 GND
11
7
8
9
10
V
D
Functional Block Diagram
Headphone
Si4702/03
Cable
U.S. and International Patents
DSP
I
LOUT
DAC
DAC
GPIO
pending—Abbreviated U.S. Patent
List:
ADC
FMIP
FILTER
DEMOD
MPX
LNA
PGA
RFGND
Q
ADC
ROUT
GPIO
7272375, 7127217, 7272373,
7272374, 7321324, 7339503,
7339504, 7355476, 7426376,
7436252, 7471940
AUDIO
AGC
TUNE
REG
0 / 90
LOW-IF
32.768 kHz
2.7–5.5 V
VIO
RST
RCLK
RDS
(Si4703)
AFC
SDIO
SCLK
SEN
VA
VD
XTAL
OSC
RSSI
Rev. 1.1 7/09
Copyright © 2009 by Silicon Laboratories
Si4702/03-C19
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