By Topic

Novel Timing Yield Improvement Circuits for High-Performance Low-Power Wide Fan-In Dynamic OR Gates

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Hassan Mostafa ; Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, Canada ; Mohab Anis ; Mohamed Elmasry

Dynamic gates are preferred in the design of high-performance modules in modern microprocessors due to the relatively high speed of dynamic gates compared with that of standard CMOS gates. These high performance modules have strict timing constraints. Due to the increased process variations in scaled technologies, the dynamic circuit delay exhibits a substantial variability around its nominal value. This delay variability results in violating the timing constraints, and correspondingly, causes a timing yield loss. In this paper, novel negative capacitance circuits are developed, for the first time, to statistically improve the timing yield under process variations. Post layout simulation results, referring to an industrial hardware-calibrated TSMC 65 nm CMOS technology, show that the adoption of the negative capacitance circuit to a 64-input wide dynamic OR gate is capable of improving the timing yield from 50% to 100%. Moreover, the negative capacitance circuit adoption results in reducing the delay variability at the expense of excess power overhead.

Published in:

IEEE Transactions on Circuits and Systems I: Regular Papers  (Volume:58 ,  Issue: 8 )