A 300-μW audio ΔΣ modulator with 100.5-dB DR using dynamic bias inverter

Sangwoo Lee, Woojin Jo, Seungwoo Song, Youngcheol Chae

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

Abstract

A micropower audio delta-sigma modulator is presented for mobile applications. The modulator employs dynamic bias inverter based integrators, which maximizes both gm/ID ratio and slew rate while compensating PVT variations. A prototype modulator implemented in a 0.18pm CMOS process features a single-bit third-order topology. The modulator achieves 97.7dB SNDR, 98.6dB SNR, 100.5dB DR, and 105.8dB SFDR in a 20kHz audio band, while consuming only 300pW from a 1.8V supply. This corresponds to a state-of-the-art FoM of 178.7dB.

Original languageEnglish
Title of host publicationASP-DAC 2018 - 23rd Asia and South Pacific Design Automation Conference, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages297-298
Number of pages2
ISBN (Electronic)9781509006021
DOIs
Publication statusPublished - 2018 Feb 20
Event23rd Asia and South Pacific Design Automation Conference, ASP-DAC 2018 - Jeju, Korea, Republic of
Duration: 2018 Jan 222018 Jan 25

Publication series

NameProceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC
Volume2018-January

Other

Other23rd Asia and South Pacific Design Automation Conference, ASP-DAC 2018
CountryKorea, Republic of
CityJeju
Period18/1/2218/1/25

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Computer Graphics and Computer-Aided Design

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    Lee, S., Jo, W., Song, S., & Chae, Y. (2018). A 300-μW audio ΔΣ modulator with 100.5-dB DR using dynamic bias inverter. In ASP-DAC 2018 - 23rd Asia and South Pacific Design Automation Conference, Proceedings (pp. 297-298). (Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC; Vol. 2018-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ASPDAC.2018.8297328