TS4990(2011) データシートの表示（PDF） - STMicroelectronics

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TS4990
(Rev.:2011)

1.2 W audio power amplifier with active-low standby mode

STMicroelectronics 

TS4990

Electrical characteristics

Table 6.

Symbol

Electrical characteristics when VCC = 2.6V, GND = 0V, Tamb = 25°C (unless

otherwise specified)

Parameter

Min. Typ. Max. Unit

ICC

Supply current

No input signal, no load

3.1

6

mA

ISTBY

Standby current (1)

No input signal, VSTBY = GND, RL = 8 Ω

10 1000 nA

Voo

Output offset voltage

No input signal, RL = 8 Ω

1

10

mV

Pout

Output power

THD = 1% max, F = 1 kHz, RL = 8 Ω

220 300

mW

Total harmonic distortion + noise

THD + N Pout = 200 mWrms, AV = 2, 20 Hz ≤ F ≤ 20 kHz,

RL = 8 Ω

0.1

%

Power supply rejection ratio(2)

PSRR RL = 8 Ω, AV = 2, Vripple = 200 mVpp, input grounded

dB

F = 217 Hz

55 60

F = 1 kHz

55 62

tWU Wake-up time (Cb = 1 µF)

tSTBY Standby time (Cb = 1 µF)

VSTBYH Standby voltage level high

VSTBYL Standby voltage level low

ΦM

Phase margin at unity gain

RL = 8 Ω, CL = 500 pF

GM

Gain margin

RL = 8 Ω, CL = 500 pF

GBP

Gain bandwidth product

RL = 8 Ω

Resistor output to GND (VSTBY ≤ VSTBYL)

ROUT-GND Vout1

Vout2

125 150

ms

10

µs

1.2

V

0.4

V

65

Degrees

15

dB

1.5

MHz

6

kΩ

46

1. Standby mode is active when VSTBY is tied to GND.

2. All PSRR data limits are guaranteed by production sampling tests.

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

VCC.

Doc ID 9309 Rev 13

7/33

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