Image TDA7294
型号: TDA7294
厂商: STMicroelectronics STMicroelectronics
标准:
分类: 集成电路
描述: 100v - 100w dmos audio amplifier with mute/ST-BY
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TDA7294  
100V - 100W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY  
VERY HIGH OPERATING VOLTAGE RANGE  
(±40V)  
MULTIPOWER BCD TECHNOLOGY  
DMOS POWER STAGE  
HIGH OUTPUT POWER (UP TO 100W MU-  
SIC POWER)  
MUTING/STAND-BY FUNCTIONS  
NO SWITCH ON/OFF NOISE  
NO BOUCHEROT CELLS  
VERY LOW DISTORTION  
Multiwatt15  
ORDERING NUMBER: TDA7294V  
VERY LOW NOISE  
SHORT CIRCUIT PROTECTION  
THERMAL SHUTDOWN  
to the high out current capability it is able to sup-  
ply the highest power into both 4and 8loads  
even in presence of poor supply regulation, with  
high Supply Voltage Rejection.  
The built in muting function with turn on delay  
simplifies the remote operation avoiding switching  
on-off noises.  
DESCRIPTION  
The TDA7294 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  
Figure 1: Typical Application and Test Circuit  
C7 100nF  
+Vs C6 1000µF  
R3 22K  
+Vs  
7
+PWVs  
13  
C2  
R2  
22µF  
TDA7294  
680Ω  
IN-  
2
3
-
14  
6
OUT  
C1 470nF  
IN+  
+
C5  
22µF  
R1 22K  
IN+MUTE  
4
BOOTSTRAP  
R5 10K MUTE  
STBY  
10  
9
VM  
MUTE  
STBY  
1
THERMAL  
SHUTDOWN  
S/C  
PROTECTION  
VSTBY  
R4 22K  
8
15  
STBY-GND  
-Vs  
-PWVs  
C3 10µF  
C4 10µF  
C9 100nF  
C8 1000µF  
D93AU011  
-Vs  
February 1996  
1/16  

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