Electrical specifications
TDA7851L
Figure 10. Distortion vs. frequency (R = 2 Ω) Figure 11. Crosstalk vs. frequency
L
CROSSTALK (dB)
THD (%)
-20
-30
-40
-50
-60
-70
-80
-90
-100
10
1
RL = 4 Ω
Vs = 14.4 V
L = 2Ω
Po = 8 W
Po = 4W
R
Rg = 600Ω
0.1
0.01
0.001
10
100
1000
f (Hz)
10000
100000
10
100
1000
f (Hz)
10000
100000
AC00030
AC00031
Figure 12. Supply voltage rejection vs.
frequency
Figure 13. Output attenuation vs. supply
voltage
SVR (dB)
-20
OUTPUT ATTN (dB)
0
Rg = 600Ω
ripple = 1Vrms
-30
-40
-50
-60
-70
-80
-90
-100
RL = 4Ω
Po = 4 W ref
V
-20
-40
-60
-80
-100
10
100
1000
f (Hz)
10000
100000
5
6
7
8
9
10
Vs (V)
AC00033
AC00032
Figure 14. Power dissipation and efficiency
Figure 15. Power dissipation and efficiency
vs. output power (R = 4 Ω, SINE)
vs. output power (R = 2 Ω, SINE)
L
L
Ptot (W)
η (%)
η (%)
Ptot (W)
180
160
140
120
100
80
90
90
90
80
70
60
50
40
30
20
10
0
η
80
70
60
50
40
30
20
10
0
Vs = 14.4 V
RL = 4 x 2Ω
f = 1 KHz SINE
80
70
Vs = 14.4 V
L = 4 x 4Ω
f = 1 KHz SINE
η
R
60
50
40
Ptot
Ptot
30
20
60
40
10
0
20
0
0
2
4
6
8
10 12 14 16 18 20 22 24 26 28
0
5
10
15
20
25
Po (W)
30
35
40
45
50
Po (W)
AC00034
AC00035
10/15
Rev 1
ETC [ ETC ]
