TDA749213TR Datasheet, PDF (19/32 Pages) STMicroelectronics – 50 W + 50 W dual BTL class-D audio amplifier

TDA7492
Characterization curves
Figure 21. THD vs. output (100 Hz)
10
Test conditions:
Vcc = 20 V,
RL = 4 Ω,
Rosc = 39 kΩ, Cosc = 100 nF,
f = 100 Hz,
Gv = 20 dB,
Tamb = 25r C
5
THD + N
%
2
1
0.5
0.2
0.1
Specification limit:
0.05
Typical:
Po = 38 W at THD = 1%
0.02
0.01
100m
200m
500m
1
2
5
10
20
50
Output power (W)
Figure 22. THD vs. frequency
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
0.5
0.4
0.3
THD + N
0.2
%
0.1
0.07
0.06
0.05
0.04
0.03
Specification limit:
Typical: THD < 0.4%
0.02
0.01
20
50
100
200
500
1k
2k
Frequency (Hz)
5k
10k
20k
Figure 23. Frequency response
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
Specification limit:
Typical:
Max: +/-3 dB (20 Hz to 20 kHz)
+1
+0.75
+0.5
+0.25
dBrA -0
-0.25
-0.5
-0.75
-1
-1.25
-1.5
-1.75
-2
-2.25
-2.5
-2.75
-3
20
50
100
200
500
1k
2k
Frequency (Hz)
5k
10k
20k
Doc ID 14926 Rev 5
19/32