A chip set has been developed which implements a high-resolution A/D converter using the noise-shaping/digital decimation technique presented in an earlier paper. The chip set consists of a front-end IC to implement the noise-shaping algorithm and a digital decimator IC to reduce the sampling rate. A new method of canceling the effects of digital waveform asymmetry has been developed, resulting in increased resolution. The application circuit in its minimum configuration gives a dynamic range of 108 dB. More complex configurations yield a dynamic range of 114 dB.

Author: Adams, Robert W.
Affiliation: CTI / dbx, 71 Chapel St. Newton, MA
AES Conference: 7th International Conference: Audio in Digital Times (May 1989)
Paper Number: 7-011
Publication Date: May 1, 1989
Subject: Audio in Digital Times

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