A 1-to-1-kHz, 4.2-to-544-nW, Multi-Level Comparator Based Level-Crossing ADC for IoT Applications

Yuting Hou, Khalil Yousef, Mohamed Atef, Guoxing Wang, Yong Lian

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

This brief presents the design of an ultra-low power level-crossing analog-to-digital converter (LC-ADC) for IoT and biomedical applications. The proposed LC-ADC utilizes only one multi-level comparator instead of multiple comparators as in conventional LC-ADC, leading to simplified implementation and significant reduction in power. Implemented in 0.18-μ m CMOS process, the LC-ADC achieves 7.9 equivalent number of bits with a 49 dB signal-to-noise and distortion ratio at the input frequency up to 1 kHz. The measured minimum power is only 4.2 nW at the supply voltage of 0.55 V.

Original languageEnglish
Article number8411440
Pages (from-to)1390-1394
Number of pages5
JournalIEEE Transactions on Circuits and Systems II: Express Briefs
Volume65
Issue number10
DOIs
Publication statusPublished - Oct 2018
Externally publishedYes

Keywords

  • LC-ADC
  • multi-level comparator
  • ultra-low power

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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