Datasheet > TDA7449L_04

TDA7449L_04

更新时间： 2024-11-16 04:28:39

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		/
页数	文件大小	规格书
14页	105K
描述
LOW COST DIGITALLY CONTROLLED AUDIO PROCESSOR

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中文翻译

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数据手册

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TDA7449L_04 数据手册

TDA7449L

LOW COST

DIGITALLY CONTROLLED AUDIO PROCESSOR

1 FEATURES

Figure 1. Package

■ INPUT MULTIPLEXER

– 2 STEREO INPUTS

– SELECTABLE INPUT GAIN FOR OPTIMAL

ADAPTATION TO DIFFERENT SOURCES

DIP20

■ ONE STEREO OUTPUT

Table 1. Order Codes

■ VOLUME CONTROL IN 1.0dB STEPS

■ TWO SPEAKER ATTENUATORS:

Part Number

Package

TDA7449L

DIP20

– TWO INDEPENDENT SPEAKER CONTROL

IN 1.0dB STEPS FOR BALANCE FACILITY

Selectable input gain is provided. Control of all the

functions is accomplished by serial bus.

– INDEPENDENT MUTE FUNCTION

■ ALL FUNCTION ARE PROGRAMMABLE VIA

The AC signal setting is obtained by resistor net-

works and switches combined with operational

amplifiers.

SERIAL BUS

2 DESCRIPTION

The TDA7449L is a volume control and balance

(Left/Right) processor for quality audio applica-

tions in TV systems.

Thanks to the used BIPOLAR/CMOS Technology,

Low Distortion, Low Noise and DC stepping are

obtained.

Figure 2. Block Diagram

MUXOUTL

L-IN1

L-IN2

100K

SPKR ATT

LEFT

VOLUME

LOUT

0/30dB

2dB STEP

SCL

I²CBUS DECODER + LATCHES

R-IN1

R-IN2

SDA

100K

DIG_GND

SPKR ATT

VOLUME

ROUT

RIGHT

V_REF

V_S

SUPPLY

INPUT MULTIPLEXER

+ GAIN

AGND

D98AU868

MUXOUTR

CREF

REV. 3

1/14

June 2004

12 3 4 5 6 7...14

中文翻译

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