Datasheet > TDA7449_04

TDA7449_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
19页	201K
描述
TONE CONTROL DIGITALLY CONTROLLED AUDIO PROCESSOR

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中文翻译

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数据手册

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TDA7449_04 数据手册

TDA7449

TONE CONTROL

DIGITALLY CONTROLLED AUDIO PROCESSOR

1 FEATURES

Figure 1. Package

■ INPUT MULTIPLEXER

– 2 STEREO INPUTS

– SELECTABLE INPUT GAIN FOR OPTIMAL

ADAPTATION TO DIFFERENT SOURCES

DIP20

SO20

■ ONE STEREO OUTPUT

Table 1. Order Codes

■ TREBLE, AND BASS CONTROL IN 2.0dB

Part Number

TDA7449

Package

DIP20

STEPS

■ VOLUME CONTROL IN 1.0dB STEPS

■ TWO SPEAKER ATTENUATORS:

TDA7449D

SO20

– TWO INDEPENDENT SPEAKER CONTROL

IN 1.0dB STEPS FOR BALANCE FACILITY

applications in TV systems. Selectable input gain

is provided. Control of all the functions is accom-

plished 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 TDA7449 is a volume tone (bass and treble)

balance (Left/Right) processor for quality audio

Thanks to the used BIPOLAR/CMOS Technology,

Low Distortion, Low Noise and DC stepping are

obtained.

Figure 2. Block Diagram

MUXOUTL

TREBLE(L) BIN(L) BOUT(L)

R_B

L-IN1

100K

L-IN2

SPKR ATT

LEFT

VOLUME

TREBLE

BASS

LOUT

100K

0/30dB

2dB STEP

SCL

I²CBUS DECODER + LATCHES

R-IN1

R-IN2

SDA

100K

DIG_GND

SPKR ATT

RIGHT

VOLUME

TREBLE

BASS

ROUT

V_REF

V_S

SUPPLY

INPUT MULTIPLEXER

+ GAIN

AGND

R_B

D98AU847A

MUXOUTR

TREBLE(R) BIN(R) BOUT(R)

CREF

REV. 4

1/19

June 2004

12 3 4 5 6 7...19

中文翻译

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