TDA7851A Просмотр технического описания (PDF) - STMicroelectronics
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TDA7851A Datasheet PDF : 15 Pages
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Electrical specifications
TDA7851A
Figure 10. Distortion vs. frequency
(RL = 2 Ω)
Figure 11. Crosstalk vs. frequency
THD (% )
10
Vs = 14.4 V
RL = 2Ω
1
Po = 8 W
0.1
0.01
0.001
10
100
1000
f (Hz)
10000
CROSSTALK (dB)
-20
-30
RL = 4 Ω
Po = 4W
-40
Rg = 600Ω
-50
-60
-70
-80
-90
-100
100000
10
AC00030
100
1000
f (Hz)
10000
100000
AC00031
Figure 12. Supply voltage rejection vs.
frequency
Figure 13. Output attenuation vs. supply
voltage
SVR (dB)
-20
-30
Rg = 600Ω
Vripple = 1Vrms
-40
-50
-60
-70
-80
-90
-100
10
100
1000
f (Hz)
10000
OUTPUT ATTN (dB)
0
RL = 4Ω
Po = 4 W ref
-20
-40
-60
-80
-100
100000
5
6
AC00032
7
8
Vs (V)
9
10
AC00033
Figure 14. Power dissipation and efficiency Figure 15. Power dissipation and efficiency vs.
vs. output power (RL = 4 Ω, SINE)
output power (RL = 2 Ω, SINE)
Ptot (W)
90
80 Vs = 14.4 V
70
RL = 4 x 4Ω
f = 1 KHz SINE
60
η (% )
90
η
80
70
60
50
50
40
40
30
Ptot
30
20
20
10
10
0
0
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28
Po (W)
AC00034
180 Ptot (W)
160
Vs = 14.4 V
140
RL = 4 x 2Ω
f = 1 KHz SINE
120
100
80
60
40
20
0
0
5 10 15
Ptot
20 25 30
Po (W)
η
35 40
η (%)
90
80
70
60
50
40
30
20
10
0
45 50
AC00035
10/15
Doc ID 17715 Rev 1
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