Datasheet
Characterization curves TDA7491HV
12/41 Doc ID 14242 Rev 6
4 Characterization curves
The following characterization curves were made using the TDA7491HV demo board. The
LC filter for the 4-Ω load uses components of 15 µH and 470 nF, whilst that for the 6-Ω load
uses 22 µH and 220 nF and that for the 8-Ω load uses 33 µH and 220 nF.
4.1 With 4-Ω load at V
CC
= 14 V
Figure 3. Output power vs. supply voltage
Figure 4. THD vs. output power (1 kHz)
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Test Condition :
Vcc = 5~14V,
RL = 4 ohm,
Rosc = 39kȍ, Cosc =100nF,
f =1kHz,
Gv = 30dB,
Tamb = 25ഒ
Specification Limit:
Typical:
Vs =14V,Rl = 4 ohm
Po = 20W @THD =10%
Po =16W @THD =1%
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THD
vs.
Output
Power
THD (%)
Output Power (W)
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
100m 20200m 500m 1 2 5 10
Test Condition:
Vcc=14V,
RL=4 ohm,
Rosc=39k˖, Cosc=100nF,
f =1kHz,
Gv=30dB,
Tamb=25ഒ
Specification Limit:
Typical:
Po=20W @ THD=10%