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Nanometer device scaling in subthreshold circuits

Published: 04 June 2007 Publication History

Abstract

Subthreshold circuit design is a strong candidate for use in future low power applications. It is not clear, however, that device scaling to 45nm and beyond will be beneficial in Subthreshold circuits. We investigate the implications of device scaling on subthreshold circuits and find that the slow scaling of gate oxide thickness leads to a 60% reduction in Ion/Ioff between the 90nm and 32nm device generations. We highlight the effects of this device degradation on noise margins, delay, and energy. We subsequently propose an alternative scaling strategy and demonstrate significant improvements in noise margins, delay, and energy in sub-Vth circuits.

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    cover image ACM Conferences
    DAC '07: Proceedings of the 44th annual Design Automation Conference
    June 2007
    1016 pages
    ISBN:9781595936271
    DOI:10.1145/1278480
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Published: 04 June 2007

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    Author Tags

    1. device scaling
    2. subthreshold circuits
    3. ultra-low power

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    Overall Acceptance Rate 1,770 of 5,499 submissions, 32%

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    • (2014)Reliability-aware delay faults evaluation of CMOS flip-flops2014 Proceedings of the 21st International Conference Mixed Design of Integrated Circuits and Systems (MIXDES)10.1109/MIXDES.2014.6872224(385-389)Online publication date: Jun-2014
    • (2012)The potential of Fe-FET for robust design under variations: A compact modeling studyMicroelectronics Journal10.1016/j.mejo.2012.05.01243:11(898-903)Online publication date: Nov-2012
    • (2011)Advancement in nanoscale CMOS device design en route to ultra-low-power applicationsVLSI Design10.1155/2011/1785162011(1-19)Online publication date: 1-Jan-2011
    • (2011)A 45.6μ2 13.4μw 7.1v/v resolution sub-threshold based digital process-sensing circuit in 45nm CMOSProceedings of the 21st edition of the great lakes symposium on Great lakes symposium on VLSI10.1145/1973009.1973037(133-138)Online publication date: 2-May-2011
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    • (2011)Design and Implementation of a Throughput-Optimized GPU Floorplanning AlgorithmACM Transactions on Design Automation of Electronic Systems10.1145/1970353.197035616:3(1-21)Online publication date: 1-Jun-2011
    • (2011)Efficient and Deterministic Parallel Placement for FPGAsACM Transactions on Design Automation of Electronic Systems10.1145/1970353.197035516:3(1-23)Online publication date: 1-Jun-2011
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