Current Sensing Completion Detection for Subthreshold Asynchronous Circuits

Abstract

In this paper a novel completion detection method for self-timed, asynchronous subthreshold circuits is presented. By employing the self-timed operation principle, substantial speed gains in the operation of the asynchronous pipelines can be realized. The completion detection system is very simple, consisting of a sensor transistor, a very basic AC-coupled amplifier and a monostable multivibrator. The proposed method can be easily integrated into the CMOS design flow. The advantages of the proposed completion detection system is shown through simulations on an 16-bit ripple carry adder in a standard 0.18 mum CMOS process operating at 400 mV supply voltage.

Publication
In Proceedings of 18th European Conference on Circuit Theory and Design
Date

Bibtex

@inproceedings{akgunECCTD2007,
  author = {Akgun, O. C. and Leblebici, Y. and Vittoz, E.A.},
  booktitle = {Proceedings of 18th European Conference on Circuit Theory and Design (ECCTD)},
  title = {{Current Sensing Completion Detection for Subthreshold Asynchronous Circuits}},
  year = {2007},
  pages = {376--379},
  doi = {10.1109/ECCTD.2007.4529611},
  issn = {}
}