TS4975 查看數據表（PDF） - STMicroelectronics

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TS4975

Stereo Headphone Drive Amplifier with Digital Volume Control via I2C Bus

STMicroelectronics 

TS4975

Electrical Characteristics

Table 7. VCC = +5V, GND = 0V, Tamb = 25°C (unless otherwise specified)

Symbol

Parameter

Conditions

Min. Typ. Max.

RL = 32Ω, AV = 2dB with Single-ended

103

F = 1kHZ, Pout = 50mW

Crosstalk Channel Separation

RL = 32Ω, AV = 2dB with Single-ended

F = 20Hz to 20kHz, Pout = 50mW

75

RL = 32Ω, AV = 2dB with Phantom Ground,

F = 1kHZ, Pout = 50mW

69

RL = 32Ω, AV = 2dB with Phantom Ground,

F = 20Hz to 20kHz, Pout = 50mW

69

AV = 2dB, RL = 32Ω, Pout = 62mW

95

SNR

Signal To Noise

Ratio, A-Weighted

Single-Ended

AV = 2dB, RL = 32Ω, Pout = 62mW

95

Phantom Ground

Output Noise

AV = 2dB, Single-ended

23

ONoise Voltage,

A-Weighted

AV = 2dB, Phantom Ground

23

G

Digital Gain Range In1 & In2 to Out1 & Out2

-34

+18

Digital Gain Step size

4

Gain Error Tolerance

Zin

In1 & In2 Input

Impedance

All gain settings

twu Wake up time

Cb=1µF

tws Standby time

-1

+1

25.5 30 34.5

80

144

1

1. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is an added sinus signal to VCC @ F = 217Hz

Unit

dB

dB

µVrms

dB

dB

dB

kΩ

ms

µs

11/36

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