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Conference Paper

Low THD+N, Power Audio DAC Using PWM Technology

Authors: Gaboriau, Johann; Fei, Xiaofan; Walburger, Eric

AES Conference: UK 16th Conference: Silicon for Audio · Paper uk094 · April 2001

Abstract

A method used to remove the distortion in a digital PWM amplifier is introduced. This method is based on correction factors added to each integrator of a multi-bits delta-sigma modulator loop. This results in a tremendous improvement in the distortion performance of the system. A dynamic range of 1OOdB is obtained, with all harmonics supressed below 102dB. It is particularly useful for digital audio amplifiers.

Details

Published in
AES Conference: UK 16th Conference: Silicon for Audio
Paper number
uk094
Publication date
April 6, 2001
Session subject
Silicon for Audio
Affiliation
Cirrus Logic Inc, Austin, TX (See document for exact affiliation information.)
Type
Conference Paper