Datasheet > SI4708-C

SI4708-C

更新时间： 2024-11-06 01:19:43

品牌	Logo	应用领域
芯科 - SILICON		/
页数	文件大小	规格书
40页	1398K
描述
BROADCAST FM RADIO TUNER FOR PORTABLE APPLICATIONS

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中文翻译

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数据手册

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SI4708-C 数据手册

Si4708/09-C

BROADCAST FM RADIO TUNER FOR PORTABLE APPLICATIONS

Features

 Worldwide FM band support

 Adjustable soft mute

 Volume control

(76–108 MHz)

 Digital low-IF receiver

 Line-level analog output

 32.768 kHz reference clock

 Frequency synthesizer with

integrated VCO

 2-wire and 3-wire control

 Adjustable seek tuning

interface

Ordering Information:

 Automatic frequency control

 2.7 to 5.5 V supply voltage

See page 34.

(AFC)

 2.7 to 5.5 V supply voltage

 Automatic gain control (AGC)

 Excellent overload immunity

 Signal strength measurement

 Integrated LDO regulator allows

Pin Assignments

(Top View)

direct connection to battery

 2.5 x 2.5 mm 16-pin QFN

package

Pb-free/RoHS compliant

 RDS/RBDS Processor (Si4709)

 Programmable de-emphasis

(50/75 µs)

Si4708/09-GM

 Adaptive noise suppression

LOUT

Applications

FMI

12 ROUT

GND

PAD

 Cellular handsets

 MP3 players

 Portable navigation  USB FM radio

 Consumer electronics  PDAs

RFGND

11 GND

10 V_D

RST

SEN

 Portable radios

 Mobile Internet

 Notebook PCs

 Net PCs

devices

Description

The Si4708/09 is the world's smallest FM broadcast receiver, integrating

the complete tuner function from antenna input to stereo audio output with

RDS (Si4709).

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.

Functional Block Diagram

Headphone

Si4708/09

Cable

LOUT

DAC

GPIO

Notes:

ADC

FMI

1. To ensure proper operation and FM

receiver performance, follow the

guidelines in “AN350: Si4708/09

Antenna, Schematic, Layout, and

Design Guidelines" and “AN383:

Si47xx Antenna Selection and

Universal Layout Guidelines.” Silicon

Laboratories will evaluate schematics

and layouts for qualified customers.

2. Place Si4708/09 as close as possible

to antenna jack and keep the FMI

trace as short as possible.

LNA

PGA

DSP

RFGND

ADC

ROUT

GPO

AGC

TUNE

REG

0 / 90

LOW-IF

32.768 kHz

VIO

RST

RCLK

RDS

(Si4709)

AFC

SDIO

SCLK

SEN

RSSI

Rev. 1.2 10/10

Si4708/09-C

12 3 4 5 6 7...40

中文翻译

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