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Convention Paper

Design of Single-bit Noise-Shaping Loops with High-Order Loop Filters

Authors: Adams, Robert W.; Ferguson Jr., P. F.; Gansesan, A.

AES Convention 89 · Paper 2974 · September 1990

Abstract

A procedure is given for designing stable sigma-delta modulators with high-order discrete-time loop filters. An unusual loop topology with distributed feedback from the quantizer output to intermediate nodes in the loop filter is described and compared to more conventional loops. The concept of signal-dependant quantizer gain is explored and several nonlinear stabilization strategies are presented to insure unconditional stability. Design examples for both A/D and D/A loops are given.

Details

Published in
AES Convention 89
AES Convention
89
Paper number
2974
Publication date
September 6, 1990
Session subject
Sigma-Delta Converter Technology
Affiliation
Analog Devices Semiconductor, Wilmington, MA (See document for exact affiliation information.)
Type
Convention Paper