TDA7491MV13TR Просмотр технического описания (PDF) - STMicroelectronics

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TDA7491MV13TR

25 W mono BTL class-D audio amplifier

STMicroelectronics 

TDA7491MV

4

Characterization curves

Characterization curves

The following characterization curves were made using the TDA7491MV demo board. The

LC filter for the 8- 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℃

THD (%)

10

5

2

1

0.5

0.2

0.1

0.05

Specification Limit:

0.02

Typical:

Po =20W @ THD =10%

0.01

0.005

100m

200m

500m

1

2

5

10

Output Power (W)

20 30

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