Novel concept dynamic feedback MCML technique for high-speed and high-gain MCML type latch

Tetsuo Endoh, Masashi Kamiyanagi

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, we propose the novel Dynamic Feedback (DF-) MCML technique for high-speed and high-gain MCML type latch. The concept of the proposed DF-MCML technique is as follows; the output node signal is feedbacked to the input node in Sampling-Mode, and the output node is opened from the input node in Holding-Mode. It is shown by analytic theory that by this dynamic feedback sequence, both stability and sensibility of latch in Sampling-Mode is exponentially improved, and the gain of latch in Holding-Mode is drastically increased. Finally, we have numerically investigated the circuit performance of the novel DF- MCML type latch in comparison with the conventional MCML type latch by using P-Spice simulator. The maximum operation frequency of 180 nm DF-MCML type latch reaches over 20 GHz that is 2 times than the conventional MCML type latch. It is made clear that the proposed novel Dynamic Feedback MCML technique is suitable for over 10 GHz high-speed and high-gain Si ULSIs.

Original languageEnglish
Pages (from-to)603-607
Number of pages5
JournalIEICE Transactions on Electronics
VolumeE92-C
Issue number5
DOIs
Publication statusPublished - 2009 Jan 1

Keywords

  • D-flip flop
  • Dynamic feedback MCML
  • Holding mode
  • MCML
  • Sampling mode

ASJC Scopus subject areas

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

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