Diodes PAM8803 - Manual

PAM8803
Document number: DSxxxxx Rev. 1 - 4
1 of 14
www.diodes.com
November 2012
© Diodes Incorporated
PAM8803
A Product Line of
Diodes Incorporated
3W FILTERLESS STEREO CLASS-D AUDIO
AMPLIFIER WITH DIGITAL VOLUME CONTROL
Description
The PAM8803 is a 3W, class-D audio amplifier with 64-step digital
volume control. It offers low THD+N, allowing it to produce high-
quality sound reproduction. The new filterless architecture allows the
device to drive the speaker directly, without needing low-pass output
filters which will save 30% system cost and 75% PCB area.
With the same numbers of external components, the efficiency of the
PAM8803 is much better than class-AB cousins. It extends battery
life, making it ideal for portable applications.
The PAM8803 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 Digital Volume Control
 Superior Low Noise
 Low Pop Noise
 Efficiency up to 90%
 Short Circuit Protection
 Thermal Shutdown
 Few External Components to Save Space and Cost
 Pb-Free Packages
Pin Assignments
Applications
 LCD Monitors/TV Projectors
 Notebook Computers
 Portable Speakers
 Portable DVD Players, Game Machines
 Cellular Phones/Speaker Phones
Typical Applications Circuit