Electronic Design

Class-D Amps Raise Low-Power Systems To The Next Level

This article was originally published in the Dec 14, 1998 issue of Electronic Design. Class-D audio power amplifiers (APAs) were first introduced nearly 50 years ago. Since then, they have been used ...
Audioholics

ATI AT4002 Class AB and AT522NC Class D Amplifier Review Shootout

In market for a powerful 200 WPC amp? ATI has you covered with two completely different technologies. We compare the AT4000 class A/B and the AT522NC Class-D amplifiers to help you decide. EIA 1kHz ...
EDN

Filter-free design helps class-D audio amplifier implementations

A class-D puts out a pulse-width modulated (PWM) signal instead of the typical class-AB amplifiers linear signal The PWM signal contains the audio signal and the PWM switching frequency plus harmonics ...
EDN

Shrinking Class D amplifier moves to 0.4-mm pitch

Santa Clara, Calif. — Aimed at portable applications, National Semiconductor Corp. rolled out what it claims is the smallest 2.5-watt, Class D audio amplifier in the world. In addition, the company ...
Jazz

Class D Amplifiers Are Shrinking and Greening Your Electronics

Technology has democratized the music industry in many obvious ways -- notice how every band, regardless of stature, has a MySpace page? But one of technology's more subtle effects has been to make ...