The paper describes the theory of a second-order dynamic element matching (DEM) technique, which eliminates noise floor modulation and provides a practical means to implement high performance convertors. The DEM architecture achieves 138-dB THD+N with 2% element mismatch and 128x oversampling ratio. The implementation of this technique in a low-cost, multibit delta-sigma, 120-dB audio DAC is discussed.

Author: Gong, Xue-Mei
Affiliation: Cirrus Logic, Austin, TX
AES Convention: 108 (February 2000) Paper Number: 5124
Publication Date: February 1, 2000 Import into BibTeX
Subject: Signal Processing
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=9214

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