MOS Current Mode Logic Near Threshold Circuits

Near threshold circuits (NTC) are an attractive and promising technology that provides significant power savings with some delay penalty. The combination of NTC technology with MOS current mode logic (MCML) is examined in this work. By combining MCML with NTC, the constant power consumption of MCML...

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Main Authors: Alexander Shapiro, Eby G. Friedman
Format: Article
Language:English
Published: MDPI AG 2014-06-01
Series:Journal of Low Power Electronics and Applications
Subjects:
Online Access:http://www.mdpi.com/2079-9268/4/2/138
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author Alexander Shapiro
Eby G. Friedman
author_facet Alexander Shapiro
Eby G. Friedman
author_sort Alexander Shapiro
collection DOAJ
description Near threshold circuits (NTC) are an attractive and promising technology that provides significant power savings with some delay penalty. The combination of NTC technology with MOS current mode logic (MCML) is examined in this work. By combining MCML with NTC, the constant power consumption of MCML is reduced to leakage power levels that can be tolerated in certain modern applications. Additionally, the speed of NTC is improved due to the high speed nature of MCML technology. A 14 nm Fin field effect transistor (FinFET) technology is used to evaluate these combined circuit techniques. A 32-bit Kogge Stone adder is chosen as a demonstration vehicle for feasibility analysis. MCML with NTC is shown to yield enhanced power efficiency when operated above 1 GHz with a 100% activity factor as compared to standard CMOS. MCML with NTC is more power efficient than standard CMOS beyond 9 GHz over a wide range of activity factors. MCML with NTC also exhibits significantly lower noise levels as compared to standard CMOS. The results of the analysis demonstrate that pairing NTC and MCML is efficient when operating at high frequencies and activity factors.
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spelling doaj.art-16864e4b197640468eee27b34571e92f2022-12-22T04:28:21ZengMDPI AGJournal of Low Power Electronics and Applications2079-92682014-06-014213815210.3390/jlpea4020138jlpea4020138MOS Current Mode Logic Near Threshold CircuitsAlexander Shapiro0Eby G. Friedman1Department of Electrical Engineering, University of Rochester, Rochester, NY 14627, USADepartment of Electrical Engineering, University of Rochester, Rochester, NY 14627, USANear threshold circuits (NTC) are an attractive and promising technology that provides significant power savings with some delay penalty. The combination of NTC technology with MOS current mode logic (MCML) is examined in this work. By combining MCML with NTC, the constant power consumption of MCML is reduced to leakage power levels that can be tolerated in certain modern applications. Additionally, the speed of NTC is improved due to the high speed nature of MCML technology. A 14 nm Fin field effect transistor (FinFET) technology is used to evaluate these combined circuit techniques. A 32-bit Kogge Stone adder is chosen as a demonstration vehicle for feasibility analysis. MCML with NTC is shown to yield enhanced power efficiency when operated above 1 GHz with a 100% activity factor as compared to standard CMOS. MCML with NTC is more power efficient than standard CMOS beyond 9 GHz over a wide range of activity factors. MCML with NTC also exhibits significantly lower noise levels as compared to standard CMOS. The results of the analysis demonstrate that pairing NTC and MCML is efficient when operating at high frequencies and activity factors.http://www.mdpi.com/2079-9268/4/2/138near threshold circuits (NTC)MOS current mode logic (MCML)high performancepower efficiency
spellingShingle Alexander Shapiro
Eby G. Friedman
MOS Current Mode Logic Near Threshold Circuits
Journal of Low Power Electronics and Applications
near threshold circuits (NTC)
MOS current mode logic (MCML)
high performance
power efficiency
title MOS Current Mode Logic Near Threshold Circuits
title_full MOS Current Mode Logic Near Threshold Circuits
title_fullStr MOS Current Mode Logic Near Threshold Circuits
title_full_unstemmed MOS Current Mode Logic Near Threshold Circuits
title_short MOS Current Mode Logic Near Threshold Circuits
title_sort mos current mode logic near threshold circuits
topic near threshold circuits (NTC)
MOS current mode logic (MCML)
high performance
power efficiency
url http://www.mdpi.com/2079-9268/4/2/138
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