AP4809

Stereo Headphone Amplifier With Shutdown Mode

This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of

this product. No rights under any patent accompany the sale of the product.

Rev. 1.0 Sep 29, 2004

1/9

Features

- Operate from 3V to 7V Single Supply Voltage

- High Signal-to-Noise ratio

- High Slew Rate

- Large Output Voltage Swing

- Low Distortion

- Low Power Consumption

- Switch On/Off Click suppression

- Excellent Power Supply Ripple Rejection

- SOP-8, PDIP-8 and MSOP-8 Pb-Free Packages

Applications

- CD-ROM, DVD-ROM

- MP3 Player

- Battery Powered Devices

- Personal Computers

Pin Assignments

SOP-8L/PDIP-8L

1

2

3

45

6

7

8

(Top View)

IN1-

GND

BYPASS

Vo2

Vo1

V

DD

SHUTDOWN

IN2-

MSOP-8L

1

2

3

45

6

7

8

(Top View)

IN1-

GND

BYPASS

Vo2

Vo1

V

DD

SHUTDOWN

IN2-

General Description

The AP4809 is a stereo power amplifier in an 8-pin

SOP

package

capable

of

delivering

70mW

continuous average power per channel into 32Ω

loads with less than 0.1% (THD+N) from a 5V power

supply. Amplifier gain is externally configured by

means of two resistors per input channel. It was

designed specially to provide high quality output

power

with

a

minimal

amount

of

external

components and is therefore optimally suited for

low-power portable systems.

Pin Descriptions

Pin

No.

Pin Name

Description

1

Vo1

Output 1

2

IN1-

Inverting input 1

3

BYPASS

Tap to voltage divider for

internal mid-rail bias supply.

4

GND

Ground

5

SHUTDOWN

Logic low to put chip in

shutdown mode.

6

IN2-

Inverting input 2

7

Vo2

Output 2

8

Positive power supply

Ordering Information

Package

Packing

S : SOP-8L

N: PDIP-8L

M: MSOP-8L

AP4809 X

Blank : Tube

A

: Taping

X