TDA7293
120V - 100W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY
VERY HIGH OPERATING VOLTAGE RANGE
(
±
50V)
DMOS POWER STAGE
HIGH OUTPUT POWER (100W @ THD =
10%, R
L
= 8
Ω
, V
S
=
±
40V)
MUTING/STAND-BY FUNCTIONS
NO SWITCH ON/OFF NOISE
VERY LOW DISTORTION
VERY LOW NOISE
SHORT CIRCUIT PROTECTED (WITH NO IN-
PUT SIGNAL APPLIED)
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 8
Ω
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.
January 2003
®
IN- 2
R2
680Ω
C2
22µF
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 10µF C4 10µF
1
STBY-GND
C5
22µF
713
14
6
158
-Vs -PWVs
BOOTSTRAP
OUT
+PWVs+Vs
C9 100nF C8 1000µF
-Vs
D97AU805A
+Vs
C7 100nF C6 1000µF
BUFFER DRIVER
11
BOOT
LOADER
12
5
VCLIP
CLIP DET
(*)
(*) see Application note
(**) for SLAVE function
(**)
Figure 1: Typical Application and Test Circuit
Multiwatt15V Multiwatt15H
ORDERING NUMBERS:
TDA7293V TDA7293HS
MULTIPOWER BCD TECHNOLOGY
1/15
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