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| TDA7850 Datasheet, PDF (11/18 Pages) STMicroelectronics – 4 x 50 W MOSFET quad bridge power amplifier plus HSD | |||
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TDA7850
Electrical specifications
3.4
Electrical characteristic curves
Figure 6. Quiescent current vs. supply
voltage
Figure 7. Output power vs. supply voltage
(RL = 4Ω)
Id (mA)
200
190
Vi = 0
180
RL =â
170
160
150
140
130
120
110
100
8
10
12
14
Vs (V)
Po (W)
80
75
70
65
RL= 4Ω
60
f = 1 KHz
Po-max
55
50
THD= 10%
45
40
35
30
25
THD= 1%
20
15
10
5
16
18
8
9
10
11
12
13
14
15
16
17
18
AC00064
Vs (V)
AC00064
Figure 8. Output power vs. supply voltage
(RL = 2Ω)
Figure 9. Distortion vs. output power
(RL = 4Ω)
Po (W)
130
THD (%)
10
120
110
RL= 2Ω
100
f = 1 KHz
90
80
Po-max
THD=10%
VS = 14.4 V
RL = 4Ω
1
70
0.1
60
50
40
THD=1%
30
0.01
20
10
0
8
0.001
9
10
11
12
13
14
15
16
17
18
0.1
Vs (V)
AC00066
f = 10 KHz
f = 1 KHz
1
10
Po (W)
Figure 10. Distortion vs. output power
(RL = 2Ω)
Figure 11. Distortion vs. frequency
(RL = 4Ω)
100
AC00067
THD (%)
10
VS = 14.4 V
RL = 2Ω
1
0.1
0.01
f = 10 KHz
f = 1 KHz
THD (%)
10
VS = 14.4 V
RL = 4Ω
1
Po = 4 W
0.1
0.01
0.001
0.1
1
10
Po (W)
100
AC00068
0.001
10
100
1000
10000
100000
f (Hz)
AC00069
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