TDA7296A

70V - 60W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY

PRODUCT PREVIEW

VERY HIGH OPERATING VOLTAGE RANGE

(

±35V)

DMOS POWER STAGE

HIGH OUTPUT POWER (UP TO 60W MUSIC

POWER)

MUTING/STAND-BY FUNCTIONS

NO SWITCH ON/OFF NOISE

NO BOUCHEROT CELLS

VERY LOW DISTORTION

VERY LOW NOISE

SHORT CIRCUIT PROTECTION

THERMAL SHUTDOWN

CLIPPING DETECTION OUTPUT

DESCRIPTION

The TDA7296A is a monolithic integrated circuit

in Multiwatt15 package, intended for use as audio

class AB amplifier in Hi-Fi field applications

(Home Stereo, self powered loudspeakers, Top-

class TV). Thanks to the wide voltage range and

to the high out current capability it is able to sup-

ply the highest power into both 4

Ω and 8Ω loads

even in presence of poor supply regulation, with

high Supply Voltage Rejection.

The built in muting function with turn on delay

simplifies the remote operation avoiding switching

on-off noises.

The device provides a circuit for the detection of

clipping in the output stages. The output, on open

collector, is able to drive system with automatic

level control.

This is preliminary information on a new product now in development. Details are subject to change without notice.

June 1996

IN-

2

R2

680

Ω

C2

22

µF

C1 470nF

IN+

R1 22K

3

R3 22K

-

+

MUTE

STBY

4

VM

VSTBY

10

9

IN+MUTE

MUTE

STBY

R4 22K

THERMAL

SHUTDOWN

S/C

PROTECTION

R5 10K

C3 10

µFC4 10µF

1

STBY-GND

C5

22

µF

713

14

6

15

8

-Vs

-PWVs

BOOTSTRAP

OUT

+PWVs

+Vs

C9 100nF

C8 1000

µF

-Vs

D96AU494

+Vs

C7 100nF

C6 1000

µF

CD

5

+5V

Figure 1: Typical Application and Test Circuit

Multiwatt 15

ORDERING NUMBER: TDA7296AV

MULTIPOWER BCD TECHNOLOGY

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