TDA7491HV Datasheet, PDF (12/26 Pages) STMicroelectronics – 20 W + 20 W dual BTL class-D audio amplifier

Characterization curves
TDA7491HV
Figure 11. Total quiescent current vs supply voltage
50
45
40
35
30
25
No Load
No Load
Play Mode
20
Play Mode
15
10
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Supply Voltage (V)
Figure 12. Power supply rejection ratio vs frequency
+0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
20
Vs =18V, Rl =8 ohm
Gain =20 dB
0 dB @
Ripple Frequency =100Hz
Ripple Voltage = 500mV
L-Channel
R-Channel
50
100 200
500
1k
2k
Frequency (Hz)
5k
10k 20k
4.2
For 6 Ω loads
Figure 13. Output power vs supply voltage
28
24
20
16
12
8
4
0
5
7
9 11 13 15 17 19
Supply Voltage (V)
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