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PDF TDA7296HS Data sheet ( Hoja de datos )
| Número de pieza | TDA7296HS | |
| Descripción | 70V - 60W DMOS AUDIO AMPLIFIER | |
| Fabricantes | STMicroelectronics | |
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TDA7296
70V - 60W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY
1 FEATURES
■ MULTIPOWER BCD TECHNOLOGY
■ VERY HIGH OPERATING VOLTAGE RANGE
(±35V)
■ DMOS POWER STAGE
■ HIGH OUTPUT POWER (UP TO 60W MUSIC
POWER)
■ MUTING/STAND-BY FUNCTIONS
■ NO SWITCH ON/OFF NOISE
■ NO BOUCHEROT CELLS
■ VERY LOW DISTORTION
■ VERY LOW NOISE
■ SHORT CIRCUIT PROTECTION
■ THERMAL SHUTDOWN
2 DESCRIPTION
The TDA7296 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, Topclass TV).
Figure 2. Typical Application and Test Circuit
Figure 1. Package
Multiwatt15V
Multiwatt15H
(Short Leads)
Table 1. Order Codes
Part Number
TDA7296
TDA7296HS
Package
Multiwatt15V
Multiwatt15H (Short Leads)
Thanks to the wide voltage range and to the high
out current capability it is able to supply the high-
est power into both 4Ω and 8Ω loads even in pres-
ence of poor supply regulation, with high Supply
Voltage Rejection.
The built in muting function with turn on delay sim-
plifies the remote operation avoiding switching on-
off noises.
VM
VSTBY
C7 100nF
+Vs C6 1000µF
R3 22K
C2
22µF
R2
680Ω
IN- 2
C1 470nF
IN+ 3
R1 22K
IN+MUTE
4
R5 10K MUTE 10
MUTE
STBY 9
STBY
R4 22K
1
+Vs
7
-
+PWVs
13
14 OUT
+ C5
22µF
6
BOOT-
STRAP
THERMAL
SHUTDOWN
8
S/C
PROTECTION
15
C3 10µF
C4 10µF
STBY-GND
-Vs
C9 100nF
-PWVs
C8 1000µF
D93AU011
-Vs
Note: The Boucherot cell R6, C10, normally not necessary for a stable operation it could
be needed in presence of particular load impedances at VS <±25V.
R6
2.7Ω
C10
100nF
February 2005
Rev. 10
1/15
1 page  
TDA7296
3 APPLICATION SUGGESTIONS
(see Test and Application Circuits of the Fig. 2)
The recommended values of the external components are those shown on the application circuit of Figure
2. Different values can be used; the following table can help the designer.
COMPONENTS
SUGGESTED
VALUE
PURPOSE
LARGER THAN
SUGGESTED
SMALLER THAN
SUGGESTED
R1 (*)
22k
Input Resistance
Increase Input
Decrease Input
Impedance
Impedance
R2
R3 (*)
680Ω
22k
Closed Loop Gain
Set to 30db (**)
Decrease of Gain
Increase of Gain
Increase of Gain
Decrease of Gain
R4
22k
St-by Time Constant
Larger St-by
Smaller St-by ON/OFF
ON/OFF Time
Time; Pop Noise
R5
10k
Mute Time Constant
Larger Mute
Smaller Mute
ON/OFF Time
ON/OFF Time
C1
0.47µF
Input DC Decoupling
Higher Low Frequency
Cutoff
C2
22µF
Feedback DC
Decoupling
Higher Low Frequency
Cutoff
C3
10µF
Mute Time Constant
Larger Mute
Smaller Mute ON/OFF
ON/OFF Time
Time
C4
10µF
St-by Time Constant
Larger St-by
Smaller St-by ON/OFF
ON/OFF Time
Time; Pop Noise
C5
22µF
Bootstrapping
Signal Degradation at
Low Frequency
C6, C8
1000µF
Supply Voltage Bypass
Danger of Oscillation
C7, C9
0.1µF
(*) R1 = R3 for pop optimization
(**) Closed Loop Gain has to be ≥ 24dB
Supply Voltage Bypass
Danger of Oscillation
5/15
5 Page 
Figure 22. Frequency Response of the Bridge
Application
TDA7296
Figure 24. Distortion vs. Output Power
Figure 23. Distortion vs. Output Power
11/15
11 Page | ||
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| PDF Descargar | [ Datasheet TDA7296HS.PDF ] | |
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