TDA7491P Datasheet, PDF (23/42 Pages) STMicroelectronics – 2 x 10-watt dual BTL class-D audio amplifier

TDA7491P
Characterization curves
Figure 26. Power supply rejection ratio vs. frequency
+0
-10
Test Condition:
Vcc =11V,
-20
RL= 6 ohm,
-30
Rosc =39kΩ, Cosc =100nF,
Vin=0,
-40
d
Gv =30dB,
B
r
-50
0dB refers to 500mV, 100Hz,
A
Tamb =25℃
-60
-70
Ripple frequency=100Hz
Ripple voltage=500mV
-80
-90
-100
20
50
100
200
500
1k
2k
Hz
6ohm 11v PSRR.at27
Figure 27. Power dissipation and efficiency vs. output power
5k
10k 20k
Test Condition:
Vcc =11V,
RL= 6 ohm,
Rosc =39kΩ, Cosc =100nF,
F=1kHz,
Gv =30dB,
Tamb =25℃
100
90
80
70
60
50
40
30
20
10
0
0
Vcc=11V
Rload=6ohm
Gain=30dB
f=1kHz
2
4
6
8
10
Output power per channel (W)
3
2.5
2
1.5
1
0.5
0
12
Doc ID 13540 Rev 6
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