TDA7492P Datasheet, PDF (15/26 Pages) STMicroelectronics – 25-watt + 25-watt dual BTL class-D audio amplifier

TDA7492P
Characterization curves
Figure 16. Crosstalk vs frequency
Test conditions:
Vcc = 20 V,
RL = 8 Ω,
Rosc = 39 kΩ, Cosc = 100 nF,
f = 1 kHz,
Gv = 30 dB,
Po = 1 W
Tamb = 25r C
Specification limit:
Typical:
> 50 dB @f = 1 kHz
-60 _{TTTTTTTTTTT TTTT T TTTTT}
-65
Crosstalk
-70
(dB)
-75
-80
-85
-90
-95
-100
-105
-110
-115
-120
20
50
100
200
500
1k
2k
Frequency (Hz)
Figure 17. FFT 0 dB
Test conditions:
Vcc = 20 V,
RL = 8 Ω
Rosc = 39 kΩ, Cosc = 100 nF,
f = 1 kHz,
Gv = 30 dB,
Po = 1 W
Tamb = 25r C
Specification limit:
Typical:
> 60 dB for the harmonic frequency
+10
+0
FFT ^-10
(dB) ^-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
20
50
100
200
500
1k
2k
Frequency (Hz)
5k
10k 20k
5k
10k 20k
Figure 18. FFT -60 dB
Test conditions:
Vcc = 20 V,
RL = 8 Ω,
Rosc = 39 kΩ, Cosc = 100 nF,
f = 1 kHz,
Gv = 30 dB,
Po = -60 dB (1 W = 0 dB)
Tamb = 25r C
Specification limit:
Typical:
> 90 dB for the harmonic frequency
+0
-10
FFT ^-20
-30
(dB)
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
20
50
100
200
500
1k
2k
Frequency (Hz)
5k
10k 20k
Doc ID 15068 Rev 5
15/26