Optimal synthesis of Delta-Sigma modulator topologies considering SNR variation

Hua Tang, Matthew M. Webb

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

This paper presents a method for optimal synthesis of Delta-Sigma (ΔΣ) modulator topologies in terms of statistical SNR (Signal-to-Noise Ratio) variation. A ΔΣ modulator template topology is used to represent many possible Delta-Sigma modulator topologies. Then a symbolic formulation of statistical SNR variation is systematically derived from the template topology so that variation of capacitors are directly translated to SNR variation. To facilitate the search for an optimal topology, a MINLP (Mixed-Integer Nonlinearly Constrained Programming) program is formulated. By solving the MINLP program, an optimal solution with least statistical SNR variation can be obtained. Experiments have shown the solved optimal topologies have less SNR variation compared to traditional ones.

Original languageEnglish (US)
Title of host publication2007 50th Midwest Symposium on Circuits and Systems, MWSCAS - Conference Proceedings
Pages730-733
Number of pages4
DOIs
StatePublished - Dec 1 2007
Event2007 50th Midwest Symposium on Circuits and Systems, MWSCAS - Conference - Montreal, QC, Canada
Duration: Aug 5 2007Aug 8 2007

Publication series

NameMidwest Symposium on Circuits and Systems
ISSN (Print)1548-3746

Other

Other2007 50th Midwest Symposium on Circuits and Systems, MWSCAS - Conference
CountryCanada
CityMontreal, QC
Period8/5/078/8/07

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