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TDA7294S

February 2005

1

Features

(± 45V)

INPUT SIGNAL APPLIED)

EASILY CONNECTED IN PARALLEL TO

DRIVE VERY LOW IMPEDANCES)

2

Description

The TDA7294S 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 supply 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.

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

Figure 2. Typical Application and Test Circuit

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

µF

C4 10

µF

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. Package

Table 1. Order Codes

Part Number

Package

TDA7294S

Multiwatt15 (Vertical)

Multiwatt15 (Vertical)

Rev. 2