TDA7449 datasheet(1/17 Pages) STMICROELECTRONICS

部品番号	TDA7449

部品情報	TONE CONTROL DIGITALLY CONTROLLED AUDIO PROCESSOR

PDF	17 Pages

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メーカー	STMICROELECTRONICS [STMicroelectronics]

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TDA7449

TONE CONTROL

DIGITALLY CONTROLLED AUDIO PROCESSOR

INPUT MULTIPLEXER

- 2 STEREO INPUTS

- SELECTABLE INPUT GAIN FOR OPTIMAL

ADAPTATION TO DIFFERENT SOURCES

ONE STEREO OUTPUT

TREBLE, AND BASS CONTROL IN 2.0dB

STEPS

VOLUME CONTROL IN 1.0dB STEPS

TWO SPEAKER ATTENUATORS:

- TWO INDEPENDENT SPEAKER CONTROL

IN 1.0dB STEPS FOR BALANCE FACILITY

- INDEPENDENT MUTE FUNCTION

ALL FUNCTION ARE PROGRAMMABLE VIA

SERIAL BUS

DESCRIPTION

The TDA7449 is a volume tone (bass and treble)

balance (Left/Right) processor for quality audio

applications in TV systems.

Selectable input gain is provided. Control of all

the functions is accomplished by serial bus.

The AC signal setting is obtained by resistor net-

works and switches combined with operational

amplifiers.

Thanks to the used BIPOLAR/CMOS Technology,

Low Distortion, Low Noise and DC stepping are

obtained.

April 1999

®

0/30dB

2dB STEP

MUXOUTL

VOLUME

TREBLE

TREBLE(L)

BASS

MUXOUTR

TREBLE(R)

SPKR ATT

LEFT

LOUT

SCL

SDA

DIG_GND

ROUT

D98AU847A

I

2CBUS DECODER + LATCHES

100K

G

L-IN1

L-IN2

100K

R-IN1

R-IN2

G

INPUT MULTIPLEXER

+ GAIN

BOUT(L)

SPKR ATT

RIGHT

BIN(R) BOUT(R)

SUPPLY

CREF

AGND

VS

BIN(L)

5

8

9

7

6

19

20

18

4

2

3

11

17

12

13

1

10

16

15

14

RB

VREF

BLOCK DIAGRAM

ORDERING NUMBER: TDA7449

DIP20

1/17

同様の部品番号 - TDA7449

メーカー	部品番号	データシート	部品情報
STMicroelectronics	TDA7449	200Kb / 19P	TONE CONTROL DIGITALLY CONTROLLED AUDIO PROCESSOR Jun-2004
	TDA7449	361Kb / 21P	Digital tone control audio processor 03-Sep-2014
	TDA7449D	200Kb / 19P	TONE CONTROL DIGITALLY CONTROLLED AUDIO PROCESSOR Jun-2004
	TDA7449L	90Kb / 13P	LOW COST DIGITALLY CONTROLLED AUDIO PROCESSOR Apr-1999
	TDA7449L	104Kb / 14P	LOW COST DIGITALLY CONTROLLED AUDIO PROCESSOR Jun-2004

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	TDA7449	200Kb / 19P	TONE CONTROL DIGITALLY CONTROLLED AUDIO PROCESSOR Jun-2004
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