IEEE Transactions on Circuits and Systems Part II: Express Briefs, ( ISI ), Volume (61), No (10), Year (2014-10) , Pages (753-757)

Title : ( A Low-Power Subthreshold to Above-Threshold Voltage Level Shifter )

Authors: Seyed Rasool Hosseini , Mehdi Saberi , Reza Lotfi ,

Citation: BibTeX | EndNote

Abstract

This paper presents a power-efficient voltage level-shifter architecture capable of converting extremely low levels of input voltages to higher levels. In order to avoid the static power dissipation, the proposed structure uses a current generator which turns on only during the transition times in which the logic level of the input signal is not corresponding to the output logic level. Moreover, the strength of the pull-up device is decreased when the pull-down device is pulling down the output node in order for the circuit to be functional even for the input voltage lower than the threshold voltage of a MOSFET. The operation of the proposed structure is also analytically investigated. Post-layout simulation results of the proposed structure in a 0.18-µm CMOS technology show that at the input low supply voltage of 0.4 V and high supply voltage of 1.8 V, the level shifter has a propagation delay of 30 ns, a static power dissipation of 130 pW, and an energy per transition of 327 fJ for 1-MHz input signal.

Keywords

, Voltage level converter, power-efficiency, subthreshold operation
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@article{paperid:1046015,
author = {Hosseini, Seyed Rasool and Saberi, Mehdi and Lotfi, Reza},
title = {A Low-Power Subthreshold to Above-Threshold Voltage Level Shifter},
journal = {IEEE Transactions on Circuits and Systems Part II: Express Briefs},
year = {2014},
volume = {61},
number = {10},
month = {October},
issn = {1549-7747},
pages = {753--757},
numpages = {4},
keywords = {Voltage level converter; power-efficiency; subthreshold operation},
}

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%0 Journal Article
%T A Low-Power Subthreshold to Above-Threshold Voltage Level Shifter
%A Hosseini, Seyed Rasool
%A Saberi, Mehdi
%A Lotfi, Reza
%J IEEE Transactions on Circuits and Systems Part II: Express Briefs
%@ 1549-7747
%D 2014

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