On the Resiliency of NC-FinFET SRAMs against Variation: MFIS Structure

Aniket Gupta, Nitanshu Chauhan, Om Prakash, Hussam Amrouch

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

This work investigates, for the first time, the impact of different variability sources on the reliability of SRAMs implemented using the Negative Capacitance FinFET (NC-FinFET) technology in comparison to the baseline conventional FinFET technology. Unlike the existing state of the art, our investigation is for NC-FinFETs constructed in a Metal-Ferroelectric-Insulator-Semiconductor (MFIS) structure. Our analysis is based on calibrated TCAD simulations in which baseline FinFETs are calibrated to reproduce Intel 14nm measurements for both I-V characteristics and variation. NC parameters were extracted by fitting the Landau model to an experimentally-measured S shaped polarization-electric field curve. Our key focus is on revealing the individual and combined impact of variability sources on the noise margins of SRAMs. We demonstrate that NC-FinFETs based SRAMs exhibit a higher immunity against variation due to the better electrostatic integrity caused by NC.

Original languageEnglish
Title of host publicationSISPAD 2021 - 2021 International Conference on Simulation of Semiconductor Processes and Devices, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages85-88
Number of pages4
ISBN (Electronic)9781665406857
DOIs
StatePublished - 27 Sep 2021
Externally publishedYes
Event26th International Conference on Simulation of Semiconductor Processes and Devices, SISPAD 2021 - Dallas, United States
Duration: 27 Sep 202129 Sep 2021

Publication series

NameInternational Conference on Simulation of Semiconductor Processes and Devices, SISPAD
Volume2021-September

Conference

Conference26th International Conference on Simulation of Semiconductor Processes and Devices, SISPAD 2021
Country/TerritoryUnited States
CityDallas
Period27/09/2129/09/21

Keywords

  • NC-FinFET
  • Reliability.
  • SRAM
  • Variability

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