TDA7293

120V - 100W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY

VERY HIGH OPERATING VOLTAGE RANGE

(

±50V)

DMOS POWER STAGE

HIGH OUTPUT POWER (100W @ THD =

MUTING/STAND-BY FUNCTIONS

NO SWITCH ON/OFF NOISE

VERY LOW DISTORTION

VERY LOW NOISE

SHORT CIRCUIT PROTECTION

THERMAL SHUTDOWN

CLIP DETECTOR

MODULARITY (MORE DEVICES CAN BE

EASILY CONNECTED IN PARALLEL TO

DRIVE VERY LOW IMPEDANCES)

DESCRIPTION

The TDA7293 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.

The built in muting function with turn on delay

simplifies the remote operation avoiding switching

on-off noises.

Parallel mode is made possible by connecting

more device through of pin11. High output power

can be delivered to very low impedance loads, so

optimizing the thermal dissipation of the system.

December1999

®

IN-

2

R2

680

Ω

C2

22

µF

C1 470nF

IN+

R1 22K

3

R3 22K

-

+

MUTE

STBY

4

VMUTE

VSTBY

10

9

SGND

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

D97AU805A

+Vs

C7 100nF

C6 1000

µF

BUFFER DRIVER

11

BOOT

LOADER

12

5

VCLIP

CLIP DET

(*)

(*) see Application note

(**) for SLAVE function

(**)

Figure 1: Typical Application and Test Circuit

Multiwatt15

ORDERING NUMBER: TDA7293V

MULTIPOWER BCD TECHNOLOGY

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