Design optimization of FinFET domino logic considering the width quantization property

Seid Hadi Rasouli, Hamed F. Dadgour, Kazuhiko Endo, Hanpei Koike, Kaustav Banerjee

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Design optimization of FinFET domino logic is particularly challenging due to the unique width quantization property of FinFET devices. Since the keeper device in domino logic is sized based on the leakage current of the pull-down network (PDN) (to meet the noise margin constraint), a reliable statistical framework is required to accurately estimate the domino gate leakage current. Considering the width quantization property, this paper presents such a statistical framework, which provides a reliable design window for keeper sizing to meet the noise margin constraint (for the practical range of threshold voltage variation in sub-32-nm technology nodes). On the other hand, the width quantization property restricts the design optimization (including power/performance characteristics) typically achieved via continuous keeper sizing in planar-CMOS domino logic designs. To cope with this restriction, this paper also introduces a novel methodology for FinFET-based keeper design, which exploits the exclusive property of FinFET devices (capacitive coupling between the front gate and the back gate in a four-terminal FinFET) to simultaneously achieve higher performance and lower power consumption. Using this new methodology, the keeper device is made weaker at the beginning of the evaluation phase to reduce its contention with the PDN, but gradually becomes stronger to provide a higher noise margin.

Original languageEnglish
Article number5599939
Pages (from-to)2934-2943
Number of pages10
JournalIEEE Transactions on Electron Devices
Volume57
Issue number11
DOIs
Publication statusPublished - 2010 Nov
Externally publishedYes

Keywords

  • Design optimization
  • Domino logic
  • FinFET
  • leakage estimation
  • width quantization

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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