It has already been shown that a 16-bit quality digital-to-analog converter (DAC) using pulse-width modulation (PWM) is possible with effectively zero harmonic distortion. The techniques used to achieve this have been extended to 20 bits. They involve precompensation and noise shaping of the input signal prior to the PWM. The techniques are explained and computer simulations are presented of a 20-bit DAC.

Authors: Paul, Allan; Sandler, Mark
Affiliation: King's College London, London, UK
AES Convention: 95 (October 1993) Paper Number: 3766
Publication Date: October 1, 1993
Subject: Digital and Analog Electronics

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