TDA7491MV Datasheet, PDF (11/28 Pages) STMicroelectronics – 25 W mono BTL class-D audio amplifier

TDA7491MV
4
Characterization curves
Characterization curves
The following characterization curves were made using the TDA7491MV demo board. The
LC filter for the 8-Ω load uses components of 33 µH and 220 nF.
All other test conditions are given along side the corresponding curves.
Figure 3. Output power vs supply voltage
Test Condition :
Vcc = 5~18V,
RL = 8 ohm,
Rosc =39kO, Cosc =100nF,
f =1kHz,
Gv =30dB,
Tamb =25℃
Specification Limit:
Typical:
Vs =18V,Rl = 8 ohm
Po =20W @THD =10%
Po =16W @THD =1%
Output Power vs. Supply Voltage(8 ohm)
22
20
18
16
14
12
10
8
6
4
2
0
5
Rl =8 ohm
f =1kHz
THD =10%
THD =1%
6 7 8 9 10 11 12 13 14 15 16 17 18
Supply Voltage (V)
Figure 4. THD vs output power (1 kHz)
Test Condition:
Vcc =18V,
RL= 8 ohm,
Rosc =39kΩ, Cosc =100nF,
f =1kHz,
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
Doc ID 14576 Rev 2
11/28