TDA7491LP13TR Datasheet, PDF (22/37 Pages) STMicroelectronics – 2 x 5-watt dual BTL class-D audio amplifier

Characterization curves
TDA7491LP
Figure 22. FFT (0 dB)
Test Condition:
Vcc =9V,
RL= 8 ohm,
Rosc =39kΩ, Cosc =100nF,
f = 1kHz,
Gv =30dB,
Po =1W
Tamb =25°C
Specification Limit:
Typical: >60dB
for the harmonic
frequency
FFT (dB)
+10
+0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
20
50
FFT (0 dB)
100
200
500
1k
2k
Frequency (Hz)
5k
10k 20k
Figure 23. FFT (-60 dB)
Test Condition:
Vcc =9V,
RL= 8 ohm,
Rosc =39kΩ, Cosc =100nF,
f =1kHz,
Gv =30dB,
Po = -60dB (@ 1W =0dB)
Tamb =25°C
Specification Limit:
Typical: > 90dB
for the harmonic
frequency
FFT (dB)
+0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
20
50
FFT (-60 dB)
100
200
500
1k
2k
Frequency (Hz)
5k
10k 20k
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Doc ID 13541 Rev 5