TDA7491MV Datasheet, PDF (12/28 Pages) STMicroelectronics – 25 W mono BTL class-D audio amplifier

Characterization curves
TDA7491MV
Figure 5. THD vs output power (100 Hz)
Test Condition:
Vcc =18V,
RL= 8 ohm,
Rosc =39kΩ, Cosc =100nF,
f =100Hz,
Gv =30dB,
Tamb =25℃
Specification Limit:
Typical:
Po =20W @ THD =10%
THD (%)
10
5
2
1
0.5
0.2
0.1
0.05
0.02
0.01
0.005
100m
200m
500m
1
2
5
Output Power (W)
10
20 30
Figure 6.
THD vs Frequency
Test Condition:
Vcc =18V,
RL= 8 ohm,
Rosc =39kΩ, Cosc =100nF,
f =1kHz,
Gv =30dB,
Po =1W
Tamb =25℃
THD (%)
1
0.5
0.2
0.1
0.05
Specification Limit:
Typical: THD<0.5%
0.02
0.01
20
50
100
200
500
1k
2k
Frequency (Hz)
5k
10k 20k
Figure 7. Frequency Response
Test Condition:
Vcc =18V,
RL= 8 ohm,
Rosc =39kΩ, Cosc =100nF,
f =1kHz,
Gv =30dB,
Po =1W
Tamb =25℃
Specification Limit:
Max: +/-3dB
@20Hz to 20kHz
Ampl (dB)
+2
+1
-0
-1
-2
-3
-4
-5
10
20
50 100 200
500 1k
2k
Frequency (Hz)
5k
10k
30k
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Doc ID 14576 Rev 2