A continuous-time delta-sigma modulator with novel data-weighted averaging algorithm for audio application

Jia Ni Lin, Hsing Chien Chu, Zong Yi Chen, Chung-Chih Hung

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

1 Scopus citations

Abstract

A 4-bit continuous-time delta-sigma modulator (CT-DSM) with the proposed data-weighted averaging (DWA) algorithm for audio application is presented. The proposed method randomly adds one to pointer address in the DWA to reduce distortion tones and improve the performance of spurious-free dynamic range (SFDR) and signal to noise and distortion ratio (SNDR), as compared with the conventional DWA. The post-layout simulation results show that the modulator designed in TSMC 0.18 μm CMOS process achieves the SNDR of 81.5 dB and the dynamic range (DR) of 85dB in 24 kHz signal bandwidth. The chip area is 1.168 × 0.632 mm2 and the power consumption is 339 μW from a 1.8 V power supply.

Original languageEnglish
Title of host publicationProceedings of the 2015 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages281-284
Number of pages4
ISBN (Electronic)9781479983636
DOIs
StatePublished - 30 Sep 2015
Event11th IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2015 - Singapore, Singapore
Duration: 1 Jun 20154 Jun 2015

Publication series

NameProceedings of the 2015 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2015

Conference

Conference11th IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2015
CountrySingapore
CitySingapore
Period1/06/154/06/15

Keywords

  • Delta-sigma Modulator (DSM)
  • continuous-time (CT)
  • data-weighted averaging (DWA)

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