APA2178 datasheet(4/30 Pages) ANPEC

4 / 30 page

Rev. A.3 - Jul., 2009

www.anpec.com.tw

APA2178

Electrical Characteristics

AP2178

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VDD

Supply Voltage

1.8

4.5

IDD

Supply Current

ISD

Shutdown Current

RSD =LSD= 0V

µA

Input Current

RSD, LSD

0.1

µA

CHARGE PUMP

FOSC

Switching Frequency

440

520

580

kHz

Req

Charge Pump Requirement

Resistance

Ω

POWER-ON-RESET

Rising VDD Threshold

1.67

1.7

1.73

Falling VDD Threshold

1.57

1.6

1.63

AMPLIFIERS

Internal Voltage Gain

No Load

-1.55

-1.5

-1.45

V/V

∆A

Gain Match

Input Resistance

Ω

Slew Rate

2.5

µs

VOS

Output Offset Voltage

VDD=1.8V to 4.5V, RL = 32

Ω

-5

Noise Output Voltage

µVrms

VDD=1.8V to 4.5V,Vrr=200mVrms

fin= 217Hz

fin=1kHz

PSRR

Power Supply Rejection Ratio

fin= 20kHz

Maximum Capacitive Load

400

Tstart-up

Start-up Time

120

µs

OUTR, OUTL

ESD Protection

± 8

VDD=4.5V, TA=25°

THD+N = 1%, fin=1kHz

RL = 16

Ω

150

RL = 32

Ω

120

145

THD+N = 10%, fin=1kHz

RL = 16

Ω

215

Output Power (Stereo, in Phase)

RL = 32

Ω

180

205

fin = 1kHz

PO = 105mW, RL = 16

Ω

0.03

PO = 100mW, RL = 32

Ω

0.02

VO = 2.2Vrms, RL = 300

Ω

0.005

THD+N

Total Harmonic Distortion Pulse

Noise

VO = 2.2Vrms, RL = 10k

Ω

0.003

Unless otherwise specified, these specifications apply over V

DD=PVDD=3.3V, VPGND=VGND=0V, and CCPO=CCPF=1µF.

Typical values are at T

A=25

oC.

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