TDA7293
120-volt, 100-watt, DMOS audio amplifier
with mute and standby
Features
Multipower BCD technology
Very high operating voltage range (±50 V)
Multiwatt15V
DMOS power stage
High output power (100 W into 8 Ω
@ THD =10%, with VS = ±40 V)
class AB amplifier in Hi-Fi field applications, such
as home stereo, self powered loudspeakers and
Topclass TV. Thanks to the wide voltage range
and to the high output current capability it is able
to supply the highest power into both 4-Ω and 8-Ω
loads.
Muting and stand-by functions
No switch on/off noise
Very low distortion
Very low noise
The built-in muting function with turn-on delay
simplifies the remote operation avoiding on-off
switching noises.
Short-circuit protected (with no input signal
applied)
Thermal shutdown
Parallel mode is possible by connecting several
devices and using pin11. High output power can
be delivered to very low impedance loads, so
optimizing the thermal dissipation of the system
Clip detector
Modularity (several devices can easily be
connected in parallel to drive very low
impedances)
Table 1.
Description
Device summary
Order code
Package
TDA7293V
Multiwatt15V
TDA7293HS
The TDA7293 is a monolithic integrated circuit in
Multiwatt15 package, intended for use as audio
Figure 1.
Multiwatt15H
Multiwatt15H
TDA7293 block diagram
+Vs
C7 100nF
C6 1000µF
R3 22K
C2
22µF
BUFFER DRIVER
+Vs
R2
680Ω
IN-
IN+
3
+PWVs
11
7
2
13
-
14
4
C5
22µF
(**)
VMUTE
R5 10K
MUTE
6
10
5
THERMAL
SHUTDOWN
MUTE
VSTBY
STBY
BOOT
LOADER
+
R1 22K
SGND
OUT
12
C1 470nF
9
S/C
PROTECTION
(*)
BOOTSTRAP
CLIP DET
VCLIP
STBY
R4 22K
1
C3 10µF
C4 10µF
8
15
STBY-GND
-Vs
-PWVs
C9 100nF
C8 1000µF
D97AU805A
(*) see Application note
(**) for SLAVE function
September 2010
Doc ID 6744 Rev 8
-Vs
1/21
www.st.com
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