TDA7454 查看數據表（PDF） - STMicroelectronics
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TDA7454 Datasheet PDF : 13 Pages
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TDA7454
Figure 9: THD vs. Output Power
THD (%)
10
RL = 2 Ohm
1
HI-EFF MODE
f = 10 KHz
0.1
0
0
f = 1 KHz
1
10
Po (W)
Figure 10: Muting Attenuation vs. Vpin 22
OUT ATTN
100
90
80
70 Po= 4 W
60 f= 20 to 20,000 Hz
50
40
30
20
10
0
0 0.5 1 1.5 2 2.5 3 3.5 4
Vpin22 (V)
4.5 5
Figure 11: THD vs. Frequency
THD (%)
10
RL = 4 Ohm
Po = 1 W
1
HI-EFF MODE
0.1
0
10
100
1000
f (Hz)
Figure 13: Cross-Talk vs. Frequency
CROSSTALK (dB)
90
80
Po = 4 W
70 RL = 4 Ohm
Rg = 0
60 HI-EFF MODE
50
40
30
20
10
100
1000
f (Hz)
10000
Figure 12: Supply Voltage Rejection vs. Fre-
quency
SVR (dB)
100
90
Vripple= 1 Vrms
80 Rg= 0
70
60
50
40
30
20
10
100
1000
f (Hz)
10000
10000
Figure 14: Power Dissipation and Efficiency vs.
Output Power
Ptot (W)
70
65
60 Vs= 14.4 V
55 RL = 4 x 4 Ohm
50 f = 1 KHz
45 HI-EFF MODE
40
n
35
30
25
20
15
Ptot
10
5
0
0.1
1
n (%)
70
60
50
40
30
20
10
0
10
Po (W)
7/13
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