TS4975 Просмотр технического описания (PDF) - STMicroelectronics

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TS4975

Stereo Headphone Drive Amplifier with Digital Volume Control via I2C Bus

STMicroelectronics 

TS4975

Electrical Characteristics

Table 5.

Symbol

VCC = +2.5 V, GND = 0V, Tamb = 25°C (unless otherwise specified)

Parameter

Conditions

Min. Typ.

Max.

RL = 32Ω, AV = 2dB with Single-ended

103

F = 1kHZ, Pout = 10mW

RL = 32Ω, AV = 2dB with Single-ended

F = 20Hz to 20kHz, Pout = 10mW

75

Crosstalk Channel Separation

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

F = 1kHZ, Pout = 10mW

69

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

F = 20Hz to 20kHz, Pout = 10mW

69

AV = 2dB, RL = 32Ω, Pout = 12mW

88

SNR

Signal to Noise Ratio Single-Ended

A-Weighted

AV = 2dB, RL = 32Ω, Pout = 12mW

88

Phantom Ground

ONoise

Output Noise Voltage, AV = 2dB, Single-ended

A-Weighted

AV = 2dB, Phantom Ground

23

23

G Digital Gain Range In1 & In2 to Out1 & Out2

-34

+18

Digital Gain Stepsize

4

Gain Error Tolerance

-1

+1

Zin

In1 & In2 Input

Impedance

All gain settings

25.5 30 34.5

twu Wake up time

Cb = 1µF

110 180

tws Standby time

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

7/36

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