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PDF TDA7494S Data sheet ( Hoja de datos )
| Número de pieza | TDA7494S | |
| Descripción | 10W AMPLIFIER | |
| Fabricantes | ST Microelectronics | |
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® TDA7494S
10W AMPLIFIER
10W OUTPUT POWER RL = 8Ω,
@ THD = 10% VCC = 28V
ST-BY AND MUTE FUNCTIONS
NO BOUCHEROT CELL
NO ST-BY RC INPUT NETWORK
SINGLE SUPPLY RANGING UP TO 35V
SHORT CIRCUIT PROTECTION
THERMAL OVERLOAD PROTECTION
INTERNALLY FIXED GAIN
SOFT CLIPPING
LOW TURN-ON TURN-OFF POP NOISE
MULTIWATT 15 PACKAGE
DESCRIPTION
The TDA7494S 10W is class AB power amplifier
assembled in the @Multiwatt 15 package, spe-
MULTIPOWER BI50II TECHNOLOGY
Multiwatt15
ORDERING NUMBER: TDA7494S
cially designed for high quality sound, TV applica-
tions.
Features of the TDA7494S include Stand-by and
mute functions.
BLOCK AND APPLICATION DIAGRAM
470nF
IN 1
1
30K
PWR GND
15
SGN GND
8
D99AU1012
13 +VCC
PWR
14
470µF
MUTE/STBY
PROTECTIONS
OUT
SVR
79
STAND-BY
10
470µF
10K
1µF
MUTE
December 1999
1/12
1 page  
TDA7494S
APPLICATION SUGGESTIONS
The recommended values of the external components are those shown on the application circuit of fig-
ure 1. Different values can be used; the following table can help the designer.
COMPONENT
R5
C1
C2
C5
C8
C9
C10
SUGGESTION
VALUE
10KΩ
1000µF
100nF
PURPOSE
Mute time constant
Supply voltage bypass
Supply voltage bypass
470nF
Input DC decoupling
470µF
1µF
Ripple Rejection
Mute time constant
470µF
Output DC decoupling
LARGER THAN
SUGGESTION
Larger mute on/off time
Lower low frequency
cutoff
Better SVR
Larger mute on/off time
Lower low frequency
cutoff
SMALLER THAN
SUGGESTION
Smaller mute on/off time
Danger of oscillation
Danger of oscillation
Higher low frequency
cutoff
Worse SVR
Smaller mute on/off time
Higher low frequency
cutoff
TYPICAL CHARACTERISTICS: Refer to the Application Circuit of Fig.1 VS = 21V; RL = 8Ω; f = 1KHz;
RS = 8Ω; Tamb = 25°C; RS = 50Ω; unless otherwise specified
Figure 3: Output Power vs Supply Voltage
Figure 4: Distortion vs Output Power
POUT
(W)
14
12
10
8
6
4
2
0
5
D96AU517
d=10%
d=1%
10 15 20 25 30 Vs(V)
d
(%)
D96AU518
VS=28V
RL=8Ω
1
f=15KHz
f=1KHz
0.1
0.01
0 2 4 6 8 POUT(W)
5/12
5 Page 
DIM.
A
B
C
D
E
F
G
G1
H1
H2
L
L1
L2
L3
L4
L7
M
M1
S
S1
Dia1
MIN.
0.49
0.66
1.02
17.53
19.6
21.9
21.7
17.65
17.25
10.3
2.65
4.25
4.63
1.9
1.9
3.65
mm
TYP.
1
1.27
17.78
22.2
22.1
17.5
10.7
4.55
5.08
MAX.
5
2.65
1.6
0.55
0.75
1.52
18.03
20.2
22.5
22.5
18.1
17.75
10.9
2.9
4.85
5.53
2.6
2.6
3.85
inch
MIN. TYP.
0.019
0.026
0.040
0.690
0.772
0.039
0.050
0.700
0.862
0.854
0.695
0.679
0.406
0.104
0.167
0.182
0.075
0.075
0.144
0.874
0.870
0.689
0.421
0.179
0.200
MAX.
0.197
0.104
0.063
0.022
0.030
0.060
0.710
0.795
0.886
0.886
0.713
0.699
0.429
0.114
0.191
0.218
0.102
0.102
0.152
TDA7494S
OUTLINE AND
MECHANICAL DATA
Multiwatt15 V
11/12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet TDA7494S.PDF ] | |
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