TDA749213TR Datasheet, PDF (17/32 Pages) STMicroelectronics – 50 W + 50 W dual BTL class-D audio amplifier

TDA7492
Characterization curves
Figure 16. Crosstalk
-60 _T
T T T TT T
T
Test conditions:
Vcc = 25 V,
RL = 8 Ω,
-65
Crosstalk
-70
dB
-75
Rosc = 39 kΩ, Cosc = 100 nF,
-80
f = 1 kHz,
-85
Gv = 30 dB,
-90
Po = 1 W,
-95
Tamb = 25r C
-100
-105
Specification limit:
-110
Typical: > 50 dB (at f = 1 kHz)
-115
-120
20
50
100
200
500
1k
2k
Frequency (Hz)
5k
10k
20k
Figure 17. FFT performance (0 dB)
Test conditions:
Vcc = 25 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
-10
dBrA
-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
Figure 18. FFT performance (-60 dB)
Test conditions:
Vcc = 25 V,
RL = 8 Ω,
Rosc = 39 kΩ, Cosc = 100 nF,
f = 1 kHz,
Gv = 30 dB,
Po = -60 dB (at 1 W = 0 dB)
Tamb = 25r C
Specification limit:
Typical: > 90 dB
for the harmonic frequency
+10
+0
-10
dBrA
-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
Doc ID 14926 Rev 5
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