TS4956 查看數據表（PDF） - STMicroelectronics

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TS4956

Stereo audio amplifier system with I2C bus interface

STMicroelectronics 

TS4956

3

Electrical characteristics

Electrical characteristics

Table 10. VCC = +2.7 V, GND = 0V, Tamb = 25°C (unless otherwise specified)

Symbol

Parameter

Conditions

Min. Typ. Max. Unit

Mode 1, 2, No input signal, no load

3.4 4.4

Mode 3, No input signal, no load

4.6 6

ICC Supply Current

Mode 4, No input signal, no load

Mode 5, 6, No input signal, no load

4.4 5.7 mA

1.75 2.3

Mode 7, No input signal, no load

5.7 7.4

ISTBY Standby Current

No input signal

0.5 2

µA

VOO Output Offset Voltage

No input signal

Modes 1, 2

Speaker Output, RL = 8Ω

Mode 3

Headphone Outputs, RL = 16Ω

Mode 4

Headphone Outputs, RL = 16Ω

Mode 7

BTL, Speaker Output, RL = 8Ω

5 50

5 50 mV

5 20

5 20

Headphone Output Power

(Phantom Ground mode)

Modes 3, 4

THD+N = 1% max, F = 1kHz, RL = 16Ω

THD+N = 1% max, F = 1kHz, RL = 32Ω

30 35

20 25

Pout

BTL, Speaker Output

Power

Modes 1, 2, 7

THD+N = 1% max, F = 1kHz, RL = 8Ω

270 285

mW

MLO Output Power

Modes 5, 6

THD+N = 1% max, F = 1kHz, RL = 16Ω

THD+N = 1% max, F = 1kHz, RL = 32Ω

35 42

20 25

THD+N

Total Harmonic Distortion

+ Noise

G = +1.5dB, 20Hz < F < 20kHz

Modes 1, 2, 7, RL = 8Ω, Pout = 200mW

Modes 3, 4, RL = 16Ω, Pout = 15mW

Modes 5, 6, RL = 16Ω, Pout = 30mW

0.5

0.5

%

0.5

PSRR

Power Supply Rejection

Ratio(1)

F = 217Hz, G = +1.5dB, Vripple = 200mVpp,

Inputs Grounded, Cb = 1µF

Mode 1, Speaker output, RL = 8Ω

Mode 2, Speaker output, RL = 8Ω

Mode 3, Headphone outputs, RL = 16Ω

Mode 4, Headphone outputs, RL = 16Ω

Mode 5, MLO output, RL = 16Ω

Mode 6, MLO output, RL = 16Ω

Mode 7, BTL, Speaker outputs, RL = 8Ω

60

55

61 dB

75

62

57

73

9/51

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