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SI4713-B30

Description
FM RADIO TRANSMITTER WITH RECEIVE POWER SCAN
File Size1MB,42 Pages
ManufacturerSILABS
Websitehttp://www.silabs.com
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SI4713-B30 Overview

FM RADIO TRANSMITTER WITH RECEIVE POWER SCAN

Si4712/13-B30
F M R
A DI O
T
R A N S M I T T E R W I T H
R
E C E I V E
P
O W E R
S
C A N
Features
Integrated receive power
measurement
Worldwide FM band support
(76–108 MHz)
Requires only two external
components
Frequency synthesizer with
integrated VCO
Digital stereo modulator
Programmable pre-emphasis
Analog/digital audio interface
Audio silence detector
Programmable reference clock
RDS/RBDS encoder (Si4713 only)
PCB loop and stub antenna
support with self-calibrated
capacitor tuning
Programmable transmit level
Audio dynamic range control
Advanced modulation control
2.7 to 5.5 V supply voltage
Integrated LDO regulator
3 x 3 x 0.55 mm 20-pin QFN

Pb-free and RoHS Compliant
Designed for compatibility with
cellular operation
Ordering Information:
See page 34.
Pin Assignments
Applications
The Si4712/13-B30 integrates the complete transmit functions for
standards-compliant unlicensed FM broadcast stereo transmission. The
chip also allows integrated receive power scanning to identify low signal
power FM channels. Users must comply with local regulations on radio
frequency (RF) transmission.
NC
1
20 19 18 17 16
15 RIN
NC 2
RFGND 3
TXO 4
RST 5
GND
PAD
7
SCLK
8
SDIO
9
RCLK
Functional Block Diagram
6
SEN
10 11 VDD
VIO
Si4712/13
PEAK
DETECT
DIGITAL
AUDIO
DSP
Tx
Ant
L1
120 nH
DIN
DFS
Patents pending
Note:
To ensure proper operation and
performance, follow the guide-
lines in “AN383: Universal
Antenna Selection and Layout
Guidelines.” Silicon Laboratories
will evaluate schematics and lay-
outs for qualified customers.
DAC
TXO
RFGND
DAC
ADC
LIN
ADC
RIN
AFC
CONTROL
INTERFACE
GPO
RDS (Si4713)
VDD 2.7–5.5 V
LDO
GND
C1
22 nF
Rev. 1.1 2/08
Copyright © 2008 by Silicon Laboratories
GPO3/
DCLK
GPO2/
INT
GPO1
RCLK
SDIO
VIO
SCLK
SEN
RST
Si4712/13-B30
LIN
14 DFS
13 DIN
12 GND
NC
Description
GPO3/DCLK
GPO2/INT
Cellular handsets/hands-free
MP3 players
Portable media players
Si4712/13-B30
(Top View)
Wireless speakers/microphone
Satellite digital audio radios
Personal computers/notebooks
GPO1

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