Near-threshold 40nm Supply Feedback C-element

I Schwartz, A Teman, R Dobkin, A Fish

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


The growing demand for ultra low power applications has drawn interest in low voltage digital circuits, operating in the near-threshold region. Asynchronous circuits, operating with near-threshold supply voltages, are more attractive than their synchronous counterparts due to higher resilience to PVT variations. This paper presents a novel ultra-low power C-element, which is a basic building block in common asynchronous circuits. The proposed C-element is based on a Supply Feedback concept, implemented in a cross-coupled inverter latch. Utilization of this concept enables functionality under local and global variations down to 0.3V. The cell was designed using a standard low-power 40nm technology. Simulation results show a 5.8X-24X leakage reduction at 300mV as compared to a conventional Weak Feedback C-element operating at its minimal VDD. Monte Carlo simulations prove that the proposed cell remains fully functional under global and local process variations.
Original languageAmerican English
Title of host publicationQuality Electronic Design (ASQED), 2011 3rd Asia Symposium on
StatePublished - 2011

Bibliographical note

Place of conference:Malaysia


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