DLL-based pulse-width modulation digital-to-analog converter for continuous-time sigma delta modulators

Zong Yi Chen*, Chung-Chih Hung

*Corresponding author for this work

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

1 Scopus citations

Abstract

In this paper, the DLL-based pulse-width modulation (PWM) digital-to-analog converter (DAC) is proposed to convert the output of multi-bit quantizer to a single-bit pulse-width modulated signal in the modified continuous-time sigma-delta modulators (CT-SDMs) with improved signal transfer function (STF). The DLL-based PWM DAC is more robust to clock jitter and excess loop delay (ELD) effects than conventional multi-bit DAC and other PWM DAC with similar speed and power requirements of the integrators in CT-SDMs. Furthermore, the proposed PWM DAC is based on inherently linear single-bit DAC, so the dynamic-element matching (DEM) techniques, which increase the circuit complexity and power consumption to compensate the mismatch of unit elements in the multi-bit DAC, can be removed in CT-SDMs.

Original languageEnglish
Title of host publication2014 IEEE 57th International Midwest Symposium on Circuits and Systems, MWSCAS 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages757-760
Number of pages4
ISBN (Electronic)9781479941346, 9781479941346
DOIs
StatePublished - 23 Sep 2014
Event2014 IEEE 57th International Midwest Symposium on Circuits and Systems, MWSCAS 2014 - College Station, United States
Duration: 3 Aug 20146 Aug 2014

Publication series

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

Conference

Conference2014 IEEE 57th International Midwest Symposium on Circuits and Systems, MWSCAS 2014
CountryUnited States
CityCollege Station
Period3/08/146/08/14

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    Chen, Z. Y., & Hung, C-C. (2014). DLL-based pulse-width modulation digital-to-analog converter for continuous-time sigma delta modulators. In 2014 IEEE 57th International Midwest Symposium on Circuits and Systems, MWSCAS 2014 (pp. 757-760). [6908525] (Midwest Symposium on Circuits and Systems). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MWSCAS.2014.6908525