TDA7491P Datasheet, PDF (17/42 Pages) STMicroelectronics – 2 x 10-watt dual BTL class-D audio amplifier

TDA7491P
Characterization curves
Figure 13. Power dissipation and efficiency vs. output power
Test Condition:
Vcc =10V,
RL= 4 ohm,
Rosc = 39kΩ, Cosc = 100nF,
f = 1kHz,
Gv=30dB,
Tamb=25℃
Power di ssi pat i on & Ef f i ci ency vs Out put power
90
80
70
60
50
40
30
20
10
0
0
Vcc=10V
Rload=4ohm
Gain=30dB
f=1kHz
2
4
6
8
10
Out put power per channel ( W)
5
4. 5
4
3. 5
3
2. 5
2
1. 5
1
0. 5
0
12
Figure 14. Attenuation vs. voltage on pin MUTE
Test Condition:
Vcc =10V,
RL= 4 ohm,
Rosc = 39kΩ, Cosc = 100nF,
0dB@f=1kHz,Po=1w,
Gv=30dB,
Tamb=25℃
10
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
Vcc=10V
Rload=4ohm
Gain=30dB
0dB@f=1kHz, Po=1w
1
2
3
4
Mute voltage (V)
Figure 15. Current consumption vs. voltage on pin STBY
Test Condition:
Vcc =10V,
RL= 4 ohm,
Rosc = 39kΩ, Cosc = 100nF,
Vin=0,
Gv=30dB,
Tamb=25℃
40
35
30
Vcc=10V
25
Rload=4ohm
20
Gain=30dB
Vin=0
15
10
5
0
0
0.5
1
1.5
2
2.5
3
3.5
Standby voltage (V)
Doc ID 13540 Rev 6
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