TDA7293_10 Datasheet, PDF (1/21 Pages) STMicroelectronics – 120-volt, 100-watt, DMOS audio amplifier with mute and standby

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