TDA7346 datasheet(1/14 Pages) STMICROELECTRONICS

номер детали	TDA7346

подробное описание детали	DIGITAL CONTROLLED SURROUND SOUND MATRIX

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TDA7346

DIGITAL CONTROLLED SURROUND SOUND MATRIX

1 STEREO INPUT

THREE INDEPENDENT SURROUND MODES

ARE AVAILABLE MOVIE, MUSIC AND SIMU-

LATED

- MUSIC: 4 SELECTABLE RESPONSES

- MOVIE AND SIMULATED:

256 SELECTABLE RESPONSES

TWO INDEPENDENT INPUT ATTENUATORS

IN 0.31dB FOR BALANCE FACILITY

ALL FUNCTIONS PROGRAMMABLE VIA SE-

RIAL BUS

DESCRIPTION

The TDA7346 reproduces surround sound by us-

ing phase shifters and a signal matrix. 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.

February 1997

HP1

HP2

-

+

SUPPLY

RPS1

PS1

90Hz

MUSIC

EFFECT

CONTROL

I

2C BUS

DECODER

LATCHES

Lout

DIG GND

SCL

VS

AGND

CREF

LP

D94AU122A

L-in

100K

100nF

LP1

RLP1

RHP1

5.6nF

680nF

-

+

R5

R6

+

SIM

MOVIE/

MUSIC

L-R

100nF

PS1

PS2

4KHz

4.7nF

PS2

PS3

400Hz

22nF

PS3

PS4

400Hz

22nF

PS4

RPS2

RPS3

RPS4

OFF

LPF

9KHz

MIXING

AMP

MIXING

AMP

PHASE SHIFTER

MOVIE/SIM

R-in

100nF

100K

C5

22

µF

1.2nF

SDA

ADDR

Rout

REAR

BLOCK DIAGRAM

ORDERING NUMBER: TDA7346 (DIP20)

TDA7346D (SO20)

SO20

DIP20

1/14

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Аналогичное описание - TDA7346

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