An ultra low-voltage multibit delta-sigma modulator for audio-band application

Chien-Hung Kuo, Huai Juan Xie

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

2 Citations (Scopus)

Abstract

This paper presents a 0.8 V multibit delta-sigma (ΔΣ) modulator with a single switched-opamp (SOP) in a 0.18 μm 1P6M CMOS technology. The double-sampling technique is adopted in the modulator to promote the clock efficiency and relax the requirement of SOP. To improve the accuracy of the multibit quantizer in a low-voltage circumstance and reduce the static power, a new switched-capacitor (SC) multibit quantizer without R-string is proposed. The presented ΔΣ modulator achieves a signal-to-noise-plus-distortion ratio (SNDR) of 88 dB and dynamic range (DR) of 89 dB within a 22 kHz of bandwidth under a 1.25MHz of clock rate. The power consumption of the presented modulator is 4.2 mW at a 0.8 V of supply voltage.

Original languageEnglish
Title of host publication2008 IEEE International Symposium on Circuits and Systems, ISCAS 2008
Pages1660-1663
Number of pages4
DOIs
Publication statusPublished - 2008 Sep 19
Event2008 IEEE International Symposium on Circuits and Systems, ISCAS 2008 - Seattle, WA, United States
Duration: 2008 May 182008 May 21

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
ISSN (Print)0271-4310

Other

Other2008 IEEE International Symposium on Circuits and Systems, ISCAS 2008
CountryUnited States
CitySeattle, WA
Period08/5/1808/5/21

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Kuo, C-H., & Xie, H. J. (2008). An ultra low-voltage multibit delta-sigma modulator for audio-band application. In 2008 IEEE International Symposium on Circuits and Systems, ISCAS 2008 (pp. 1660-1663). [4541754] (Proceedings - IEEE International Symposium on Circuits and Systems). https://doi.org/10.1109/ISCAS.2008.4541754