Analytical settling noise models of single-loop sigma-delta ADCs

Fu-Chuang Chen, Chun Chieh Huang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Switched-capacitor integrators are the basic building components for sigma-delta (ΣΔ) modulators, and their incomplete charge transfer (settling problem) constitutes one of the dominant error sources in ΣΔ modulators. Due to the complexity of the settling problem, analytic models for related noises are nonexistent. In this brief, closed forms of settling error models are obtained and represented as functions of ΣΔ modulator system parameters. Both behavioral simulations and transistor-level circuit simulations are employed to verify these analytical models, and the results show that our analytical models are sufficiently accurate.

Original languageEnglish
Article number5208386
Pages (from-to)753-757
Number of pages5
JournalIEEE Transactions on Circuits and Systems I: Regular Papers
Volume56
Issue number10
DOIs
StatePublished - 1 Oct 2009

Keywords

  • Settling noise
  • Sigmadelta (ΣΔ) modulation
  • Switched capacitor (SC)

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