Analysis of the inter-stage signal leakage in wide BW low OSR and high DR CT MASH ΔΣM

Qilong Liu, Lucien J. Breems, Shagun Bajoria, Muhammed Bolatkale, Chenming Zhang, Georgi I. Radulov

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

4 Citations (Scopus)
2 Downloads (Pure)

Abstract

This paper analyzes the error mechanisms that limit the dynamic range (DR) of wide-bandwidth, low-OSR continuous-time (CT) multi-stage noise-shaping (MASH) ΔΣM and proposes a tool, the Signal Leakage Function (SLF), to optimize the architecture, and hence improving DR. The SLF provides new insights on finding the key parameters which influence the inter-stage signal leakage and thus the inter-stage gain (IG). These insights would lead not only to increasing the overall dynamic range in a very power-efficient way, but also decreasing the performance sensitivity to mismatches and other variations.

Original languageEnglish
Title of host publication2020 IEEE International Symposium on Circuits and Systems, ISCAS 2020 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers
Number of pages5
ISBN (Print)978-1-7281-3320-1
DOIs
Publication statusPublished - 28 Sept 2020
Event52nd IEEE International Symposium on Circuits and Systems, ISCAS 2020 - Virtual, Online, Sevilla, Spain
Duration: 10 Oct 202021 Oct 2020

Conference

Conference52nd IEEE International Symposium on Circuits and Systems, ISCAS 2020
Country/TerritorySpain
CitySevilla
Period10/10/2021/10/20

Bibliographical note

Publisher Copyright:
© 2020 IEEE

Keywords

  • signal leakage function
  • continuous-time Delta Sigma Modulator
  • Multi-stage noise-shaping Delta Sigma Modulator
  • Analog-to-Digital Converters
  • Sigma-Delta ADC

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