PAM8603A

Document number: DSxxxxx Rev. 1 - 2

1 of 16

www.diodes.com

November 2012

© Diodes Incorporated

PAM8603A

A Product Line of

Diodes Incorporated

ANTI-SATURATION FILTERLESS 3W CLASS-D STEREO AMPLIFIER

WITH DC VOLUME CONTROL AND HEADPHONE OUTPUT

Description

The PAM8603A is a 3W, Class-D audio amplifier with headphone

amplifier. Advanced 64-Step DC volume control minimizes external

components and allows speaker volume control and headphone

volume control. PAM unique antisaturation technology which detects

output signal clip due to the over level input signal suppress the

output signal clip automatically. Also the antisaturation function can

adapt the output clip caused by power supply voltage down with

battery. It offers low THD+N, to produce highquality sound

reproduction. The new filterless architecture allows the device to

drive the speaker directly, without low-pass output filters which will

save system cost and PCB area.

With the same numbers of external components, the efficiency of the

PAM8603A is much better than Class-AB cousins. It can extend the

battery life thus be ideal for portable applications.

The PAM8603A is available in a SSOP-24 package.

Features

•

3W Output at 10% THD with a 4Ω Load and 5V Power Supply

•

Filterless, Low Quiescent Current and Low EMI

•

Low THD+N

•

64-Step DC Volume Control

•

Headphone Output Function

•

Unique Anti-Saturation Function

•

Superior Low Noise

•

Low Pop Noise

•

Efficiency Up to 90%

•

Short Circuit Protection

•

Thermal Shutdown

•

Few External Components to Save the Space and Cost

•

Pb-Free Package

Pin Assignments

Applications

•

LCD Monitors / TV Projectors

•

Notebook Computers

•

Portable Speakers

•

Portable DVD Players, Game Machines

•

VoIP/Speakers Phones