TDA749213TR Datasheet, PDF (20/32 Pages) STMicroelectronics – 50 W + 50 W dual BTL class-D audio amplifier

Characterization curves
TDA7492
Figure 24. Crosstalk
Test conditions:
Vcc = 20 V,
RL = 4 Ω,
Rosc = 39 kΩ, Cosc = 100 nF,
f = 1 kHz,
Gv = 20 dB,
0 dB at f = 1 kHz,
Po = 1 W,
Tamb = 25r C
-60T
-65
-70
Crosstalk
-75
dB
-80
-85
-90
-95
-100
-105
Specification limit:
-110
Typical: > 50 dB (at f = 1 kHz)
-115
-120
20
TT T
T
50
100
200
Figure 25. FFT performance (0 dB)
+10
Test conditions:
Vcc = 20 V,
RL = 4 Ω,
Rosc = 39 kΩ, Cosc = 100 nF,
f = 1 kHz,
+0
-10
dBrA
-20
-30
-40
-50
Gv = 20 dB,
-60
0 dB at f = 1 kHz,
-70
-80
Po = 1 W,
-90
Tamb = 25r C
-100
-110
Specification limit:
-120
Typical: > 60 dB
-130
for the harmonic frequency
-140
-150
20
50
100
200
Figure 26. FFT performance (-60 dB)
+10
Test conditions:
Vcc = 20 V,
RL = 4 Ω,
Rosc = 39 kΩ, Cosc = 100 nF,
+0
-10
-20
dBrA
-30
-40
f = 1 kHz,
-50
Gv = 20 dB,
-60
0 dB at f = 1 kHz,
-70
-80
Po = 1 W,
-90
Tamb = 25r C
-100
-110
Specification limit:
-120
Typical: > 90 dB
-130
for the harmonic frequency
-140
-150
20
50
100
200
500
1k
2k
Frequency (Hz)
500
1k
2k
Frequency (Hz)
500
1k
2k
Frequency (Hz)
5k
10k
20k
5k
10k
20k
5k
10k
20k
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Doc ID 14926 Rev 5