TS4998 datasheet(7/33 Pages) STMICROELECTRONICS

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TS4998

Electrical characteristics

7/33

Table 6.

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

Symbol

Parameter

Min.

Typ.

Max.

Unit

ICC

Supply current

No input signal, no load, left and right channel active

6.2

8.1

ISTBY

Standby current (1)

No input signal, VSTBYL = GND, VSTBYR = GND, RL = 8Ω

2000

Voo

Output offset voltage

No input signal, RL = 8Ω

135

Output power

THD = 1% max, F = 1kHz, RL = 8Ω

220

295

THD + N

Total harmonic distortion + noise

Po = 200mWrms, G = 6dB, RL = 8Ω, 20Hz ≤ F ≤ 20kHz

0.5

PSRR

Power supply rejection ratio(2), inputs grounded

RL = 8Ω, G = 6dB, Cb = 1µF, Vripple = 200mVpp

F = 217Hz

F = 1kHz

CMRR

Common mode rejection ratio(3)

RL = 8Ω, G = 6dB, Cb = 1µF, Vincm = 200mVpp

F = 217Hz

F = 1kHz

SNR

Signal-to-noise ratio

A-weighted, G = 6dB, Cb = 1µF, RL = 8Ω

(THD + N

≤ 0.5%, 20Hz < F < 20kHz)

102

Crosstalk

Channel separation, RL = 8Ω, G = 6dB

F = 1kHz

F = 20Hz to 20kHz

105

Output voltage noise, F = 20Hz to 20kHz, RL = 8Ω, G=6dB

Cb = 1µF

Unweighted

A-weighted

µVrms

Gain

Gain value (RIN in kΩ)

V/V

tWU

Wake-up time (Cb = 1µF)

tSTBY

Standby time (Cb = 1µF)

µs

ΦM

Phase margin at unity gain

RL = 8Ω, CL = 500pF

Degrees

Gain margin, RL = 8Ω, CL = 500pF

GBP

Gain bandwidth product, RL = 8Ω

1.5

MHz

Standby mode is active when VSTBY is tied to GND.

Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the sinusoidal signal superimposed upon VCC.

Dynamic measurements - 20*log(rms(Vout)/rms(Vincm)).

40k

----------------

50k

----------------

60k

----------------

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