TDA7492 查看數據表（PDF） - STMicroelectronics

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TDA7492

50 W + 50 W dual BTL class-D amplifier

STMicroelectronics 

TDA7492

Characterization curves

Figure 6. THD vs. frequency

Test conditions:

Vcc = 25 V,

RL = 6 Ω,

Rosc = 39 kΩ, Cosc = 100 nF,

f = 1 kHz,

Gv = 30 dB,

Po = 1 W,

Tamb = 25r C

0.5

0.4

0.3

0.2

THD %

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)

Figure 7. Frequency response

Test conditions:

Vcc = 25 V,

RL = 6 Ω,

Rosc = 39 kΩ, Cosc = 100 nF,

f = 1 kHz,

Gv = 30 dB,

Po = 1 W,

Tamb = 25r C

+1

+0.5

-0

dBrA

-0.5

-1

-1.5

-2

-2.5

-3

-3.5

-4

Specification limit:

-4.5

Max: +/-3 dB (20 Hz to 20 kHz)

-5

-5.5

-6

20

50

100

200

500

1k

2k

Frequency (Hz)

Test conditions:

Vcc = 25 V,

RL = 6 Ω,

Rosc = 39 kΩ, Cosc = 100 nF,

f = 1 kHz,

Gv = 30 dB,

Po = 1 W

Tamb = 25r C

Specification limit:

Typical: > 50 dB (at f = 1 kHz)

Figure 8. Crosstalk

-60 T

T T T TT

-65

Crosstalk -70

dB

-75

-80

-85

-90

-95

-100

-105

-110

-115

-120

20

50

100

200

500

1k

2k

Frequency (Hz)

5k

10k 20k

5k

10k 20k

5k

10k 20k

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