Minimum convertible voltage analysis for ratioless and robust subthreshold level conversion

Shien Chun Luo, Chi Ray Huang, Lih-Yih Chiou

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

4 Citations (Scopus)

Abstract

Subthreshold logics and memories are crucial elements in ubiquitous-computing applications. The subthreshold circuits need level converters to communicate with the other circuits that use high supply voltages. However, level conversion from sub-to-super-threshold voltage suffers from weak driving strength and severe process variations. The level conversion may depend on the size or threshold voltage of the transistors. This paper therefore analyzes level converters that can robustly convert subthreshold signals without using ratio-sized or multiple-threshold-voltage transistors. The limit of the subthreshold level conversion is thoroughly analyzed. This study suggests that level converters using current-mirror structures are superior candidates for converting subthreshold signals, according to the analytical and simulation results.

Original languageEnglish
Title of host publicationISCAS 2012 - 2012 IEEE International Symposium on Circuits and Systems
Pages2553-2556
Number of pages4
DOIs
Publication statusPublished - 2012
Event2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012 - Seoul, Korea, Republic of
Duration: 2012 May 202012 May 23

Other

Other2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012
CountryKorea, Republic of
CitySeoul
Period12-05-2012-05-23

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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