Class D Audio Amplifiers: What, Why, and How

Analog Devices

Eric Gaalaas

Technology Paper

January 2007

Class D amplifiers, first proposed in 1958, have become increasingly popular in recent years. What are Class D amplifiers? How do they compare with other kinds of amplifiers? Why is Class D of interest for audio? What is needed to make a "good" audio Class D amplifier? What are the features of ADI's Class D amplifier products? Find the answers to all these questions in the following pages.

Reproduced with the permission of Analog Devices, Inc.

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