Amplificadores

TDA7294

®

100V - 100W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY
VERY HIGH OPERATING VOLTAGE RANGE
(±40V)
DMOS POWER STAGE
HIGH OUTPUT POWER (UP TO 100W MUSICPOWER)
MUTING/STAND-BY FUNCTIONS
NO SWITCH ON/OFF NOISE
NO BOUCHEROT CELLS
VERY LOW DISTORTION
VERY LOW NOISE
SHORT CIRCUIT PROTECTION
THERMAL SHUTDOWNDESCRIPTION
The TDA7294 is a monolithic integrated circuit in
Multiwatt15 package, intended for use as audio
class AB amplifier in Hi-Fi field applications
(HomeStereo, self powered loudspeakers, Topclass TV). Thanks to the wide voltage range and

MULTIPOWER BCD TECHNOLOGY

Multiwatt15V
Multiwatt15H
ORDERINGNUMBERS:
TDA7294V
TDA7294HS

to the high out current capability it is able to supply the highest power into both 4Ω and 8Ω loads
even in presence of poor supplyregulation, with
high Supply Voltage Rejection.
The built in muting function with turn on delay
simplifies the remote operation avoiding switching
on-off noises.Figure 1: Typical Application and Test Circuit

C7 100nF

+Vs

C6 1000µF

R3 22K
C2
22µF

+Vs
R2
680Ω

IN-

IN+

3

IN+MUTE

7

2+PWVs
13

4

C1 470nF

-

14

C5
22µF

+

R1 22K

VM

R5 10K

10

STBY

VSTBY

MUTE

9

R4 22K
C3 10µF

6

MUTE

THERMALSHUTDOWN

STBY

BOOTSTRAP

S/C
PROTECTION

1
C4 10µF

OUT

8
-Vs

C10
100nF

15

STBY-GND

R6
2.7Ω

-PWVs
C8 1000µF

C9 100nF

D93AU011-Vs
Note: The Boucherot cell R6, C10, normally not necessary for a stable operation it could
be needed in presence of particular load impedances at VS