January 2007

Rev 3

1/20

1

TDA7348

Digitally controlled audio processor

Features

●

Input multiplexer

–

Three stereo and one mono inputs

–

Selectable input gain for optimal

adaptation to different sources

●

Volume control in 0.3db steps including gain

up to 20dB

●

Zero crossing mute and direct mute

●

Pause detector with programmable threshold

●

Soft mute controlled by software or hardware

PIN

●

Bass and treble control

●

Four speaker attenuators

–

Four independent speakers control in

1.25dB steps for balance and fader

facilities

–

Independent mute function

●

Description

The TDA7348 is an upgrade of the TDA7318

audioprocessor.

Thanks to the used BIPOLAR/CMOS technology,

very low distortion, low noise and DC-stepping

are obtained. Due to a highly linear signal

processing, using CMOS-switching techniques

instead of standard bipolar multipliers, very low

distortion and very low noise are obtained Several

new features like softmute, zero-crossing mute

and pause detector are implemented.

The Soft Mute function can be activated in two

ways, either via the serial bus (bit D0, Mute Byte),

or directly on pin 22 through an I/O line of the

microcontroller

Very low DC stepping is obtained by use of a

BICMOS technology.

SO-28

Order codes

Part number

Package

Packing

TDA7348D

SO-28

Tube

TDA7348D013TR

SO-28

Tape and reel

SO-28

Tube

SO-28

Tape and reel

1.

This device is Pb-free Ecopack , see Chapter 5 Package information.

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