TDA7492 데이터 시트보기 (PDF) - STMicroelectronics

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TDA7492

50 W + 50 W dual BTL class-D amplifier

STMicroelectronics 

TDA7492

Characterization curves

Test conditions:

Vcc = 20 V,

RL = 4 Ω,

Rosc = 39 kΩ, Cosc = 100 nF,

f = 100 Hz,

Gv = 20 dB,

Tamb = 25r C

Figure 21. THD vs. output (100 Hz)

10

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

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)

Figure 23. Frequency response

+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

DocID014926 Rev 6

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