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SI4703-B17 数据表(PDF) 1 Page - Silicon Laboratories

部件名 SI4703-B17
功能描述  Seek tuning
Download  42 Pages
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制造商  SILABS [Silicon Laboratories]
网页  http://www.silabs.com
标志 SILABS - Silicon Laboratories

SI4703-B17 数据表(HTML) 1 Page - Silicon Laboratories

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Confidential Rev. 1.0 1/07
Copyright © 2007 by Silicon Laboratories
Si4703-B17
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
Silicon Laboratories Confidential. Information contained herein is covered under non-disclosure agreement (NDA).
Si4703-B17
B ROADCAST FM R ADIO TUNER FOR P ORTABLE A PPLICATIONS
Features
Applications
Description
The Si4703 integrates the complete tuner function from antenna input to
stereo audio output for FM broadcast radio reception.
Functional Block Diagram
This data sheet applies to
Si4703 Firmware 17 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
Integrated crystal oscillator
Cellular handsets
MP3 players
Portable radios
USB FM radio
PDAs
Notebook PCs
Portable navigation
Automotive
Consumer electronics
VIO
I
ADC
Q
ADC
Si4703
DSP
FILTER
DEMOD
MPX
AUDIO
SCLK
SDIO
SEN
DAC
DAC
ROUT
LOUT
0 / 90
LOW-IF
RSSI
TUNE
GPIO
GPIO
RST
RFGND
LNA
FMIP
AFC
AGC
PGA
RCLK
REG
VA
VD
32.768 kHz
2.7–5.5 V
Headphone
Cable
RDS
XTAL
OSC
Patents pending
Notes:
1. To ensure proper operation and FM
receiver performance, follow the
guidelines in “AN231: Si4700/01/02/03
Headphone and Antenna Interface.”
Silicon Laboratories will evaluate
schematics and layouts for qualified
customers.
2. Place Si4703 as close as possible to
antenna jack and keep the FMIP trace
as short as possible.
Ordering Information:
See page 35.
Pin Assignments
(Top View)
Si4703-GM
GND
PAD
1
GND
LOUT
ROUT
RST
NC
GND
GND
FMIP
RFGND
VD
2
5
4
3
6
15
12
13
14
7
10
9
8
11
17
18
19
20
16


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