TS488(2019) データシートの表示（PDF） - STMicroelectronics

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TS488
(Rev.:2019)

Pop-free 120 mW stereo headphone amplifier

STMicroelectronics 

TS488

Electrical characteristics curves

Figure 22. Power supply rejection ratio vs. frequency

0

Inputs grounded, Av=-1,

-10 RL=16Ω, Cb=1 μF, T AMB=25°C

-20

-30

Vcc=2.5V

-40

Vcc=3.3V

-50

Vcc=5V

-60

-70

-80

20

100

1k

Frequency (Hz)

10k 20k

Figure 23. Power supply rejection ratio vs. frequency

VCC= 3.3 V

0

Inputs grounded, Vcc=3.3V,

-10 RL=16Ω, Cb=1 μF, T AMB=25°C

-20

Av=-4

-30

Av=-2

-40

Av=-1

-50

-60

-70

-80

20

100

1k

Frequency (Hz)

10k 20k

Figure 24. Power supply rejection ratio vs. frequency

VCC= 3.3 V, AV= -1

0

Inputs grounded, Av=-1,

-10 RL=16Ω, Vcc=3.3V, T AMB=25°C

-20

Cb=1μF

-30

Cb=470nF

-40

Cb=220nF

-50

Cb=100nF

-60

-70

-80

20

100

1k

Frequency (Hz)

10k 20k

Figure 25. Total harmonic distortion plus noise vs. output

power RL=16 Ω

10

F=1kHz, RL=16Ω

AV=-1, TAMB=25°C

1 BW=20Hz-120kHz

VCC=5V

0.1

VCC=3.3V

0.01

VCC=2.5V

1E-31

10

Output Power (mW)

100 200

Figure 26. Total harmonic distortion plus noise vs. output Figure 27. Total harmonic distortion plus noise vs. output

power RL=16 Ω, F=20 kHz

power RL=32 Ω, F=1 kHz

10

F=20kHz, RL=16Ω

AV=-1, TAMB=25°C

BW=20Hz-120kHz

1

VCC=5V

VCC=3.3V

0.1

VCC=2.5V

10

F=1kHz, RL=32Ω

AV=-1, TAMB=25°C

1 BW=20Hz-120kHz

VCC=5V

0.1

VCC=3.3V

0.01

VCC=2.5V

0.011

10

Output Power (mW)

100 200

1E-3

1

10

Output Power (mW)

100 200

DS4579 - Rev 7

page 11/32

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