TDA7294S_05 Datasheet, PDF (1/16 Pages) STMicroelectronics – 100V - 100W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY

TDA7294S
100V - 100W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY
1 Features
■ VERY HIGH OPERATING VOLTAGE RANGE
(± 45V)
■ MULTIPOWER BCD TECHNOLOGY
■ DMOS POWER STAGE
■ HIGH OUTPUT POWER (100W @ THD = 10%,
R_L = 8Ω, V_S = ±40V (MUSIC POWER)
■ MUTING/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 (MORE DEVICES CAN BE
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
Figure 1. Package
Multiwatt15 (Vertical)
Table 1. Order Codes
Part Number
TDA7294S
Package
Multiwatt15 (Vertical)
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 4Ω 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.
Figure 2. Typical Application and Test Circuit
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
February 2005
Rev. 2
1/16