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 language | English |
---|---|
Title of host publication | ISCAS 2012 - 2012 IEEE International Symposium on Circuits and Systems |
Pages | 2553-2556 |
Number of pages | 4 |
DOIs | |
Publication status | Published - 2012 |
Event | 2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012 - Seoul, Korea, Republic of Duration: 2012 May 20 → 2012 May 23 |
Other
Other | 2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012 |
---|---|
Country | Korea, Republic of |
City | Seoul |
Period | 12-05-20 → 12-05-23 |
All Science Journal Classification (ASJC) codes
- Hardware and Architecture
- Electrical and Electronic Engineering