TDA7851A Просмотр технического описания (PDF) - STMicroelectronics
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TDA7851A Datasheet PDF : 15 Pages
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TDA7851A
Electrical specifications
3.3
Electrical characteristics curves
Figure 4. Quiescent current vs. supply
voltage
Figure 5. Output power vs. supply voltage
(RL = 4 Ω)
180 Id (mA)
170
Vi = 0
RL = ∞
160
150
140
130
120
8
10
12
14
Vs (V)
Po (W)
80
75
70
65
RL= 4Ω
f =1 KHz
60
Po-max
55
50
45
THD=10%
40
35
30
25
20
THD=1%
15
10
5
16
18
8
9
10 11 12 13 14 15 16 17 18
AC00024
Vs (V)
AC00025
Figure 6. Output power vs. supply voltage
(RL = 2 Ω)
Figure 7. Distortion vs. output power
(RL = 4 Ω)
Po (W)
130
120
110
RL=2Ω
100
f=1 KHz
90
Po-max
THD (% )
10
Vs = 14.4 V
RL = 4Ω
1
80
70
THD=10%
60
0.1
50
40
THD=1%
30
0.01
20
10
0
0.001
8
9
10 11 12 13 14 15 16 17 18
0.1
Vs (V)
AC00026
f = 10 KHz
f = 1 KHz
1
10
Po (W)
Figure 8. Distortion vs. output power
(RL = 2 Ω)
Figure 9. Distortion vs. frequency
(RL = 4 Ω)
100
AC00027
THD (% )
10
Vs = 14.4 V
RL = 2 Ω
1
0.1
0.01
f = 10 KHz
f = 1 KHz
THD (% )
10
Vs = 14.4 V
RL = 4 Ω
1
Po = 4 W
0.1
0.01
0.001
0.1
1
10
Po (W)
100
AC00028
0.001
10
100
1000
f (Hz)
10000
100000
AC00029
Doc ID 17715 Rev 1
9/15
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