TS4972 Просмотр технического описания (PDF) - STMicroelectronics

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TS4972

1.2W Audio Power Amplifier with Standby Mode Active High

STMicroelectronics 

TS4972

Electrical Characteristics

Table 4: VCC = +3.3V, GND = 0V, Tamb = 25°C (unless otherwise specified)3)

Symbol

Parameter

Min. Typ. Max. Unit

ICC

Supply Current

No input signal, no load

ISTANDBY

Standby Current 1

No input signal, Vstdby = Vcc, RL = 8Ω

Voo

Output Offset Voltage

No input signal, RL = 8Ω

Po

Output Power

THD = 1% Max, f = 1kHz, RL = 8Ω

THD + N

Total Harmonic Distortion + Noise

Po = 250mW rms, Gv = 2, 20Hz < f < 20kHz, RL = 8Ω

PSRR Power Supply Rejection Ratio2

f = 217Hz, RL = 8Ω, RFeed = 22KΩ, Vripple = 200mV rms

ΦM

Phase Margin at Unity Gain

RL = 8Ω, CL = 500pF

Gain Margin

GM

RL = 8Ω, CL = 500pF

GBP

Gain Bandwidth Product

RL = 8Ω

5.5

8

mA

10 1000

nA

5

20

mV

500

mW

0.1

%

75

dB

70

Degrees

20

dB

2

MHz

1) Standby mode is actived when Vstdby is tied to Vcc

2) Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is an added sinus signal to Vcc @ f = 217Hz

3. All electrical values are made by correlation between 2.6V and 5V measurements

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