Copyright

© ANPEC Electronics Corp.

Rev. A.4 - Aug., 2013

www.anpec.com.tw

9

APA2171

Pin Description

PIN

NO.

NAME

I/O/P

FUNCTION

1

RINP

I

Right channel non-inverting input.

2

RINN

I

Right channel inverting input.

3

ROUT

O

Right channel output.

4

GND

P

Signal ground.

5

SDN

I

Shutdown mod control input signal, pull low for shutdown headphone driver. This pin should

be connect a 100

Ω Protection Resistor.

6

VSS

P

Headphone driver negative power supply.

7

CPN

I/O

Charge pump flying capacitor negative connection.

8

CPP

I/O

Charge pump flying capacitor positive connection.

9

VDD

P

Supply voltage input.

10

PGND

P

Power ground.

11

UVP

I

Under voltage protection input. Floating or Pull “H” to disable this function.

12

LOUT

O

Left channel output.

13

LINN

I

Left channel inverting input.

14

LINP

I

Left channel non-inverting input.

Block Diagram

Circuit

Power

and

Depop

Circuit

ROUT

RINN

SDN

Charge

Pump

VDD

CPP

CPN

VSS

PGND

LOUT

RINP

LINP

LINN

Shutdown

Under Voltage

Detection Circuit

Thermal

and Over

Current

Protection

UVP

GND