Analysing the Robustness of Surfing Circuits

Authors:
Suwen Yang;Mark R. Greenstreet
Affiliations:
Department of Computer Science, University of British Columbia, Vancouver, BC V6T 1Z4, Canada;Department of Computer Science, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
Venue:
Electronic Notes in Theoretical Computer Science (ENTCS)
Year:
2006

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Abstract

Surfing is a technique for implementing high-speed digital pipelines that exploits the analog dynamics of the underlying circuits. Thus, verification must consider the analog behaviour of the design. We have presented a method for analysing the robustness of surfing circuits. We formulate noise margin analysis as a non-linear optimization problem where we find the smallest disturbance waveform that results in a qualitative change in the behavior of the circuit. We present a practical method for solving these optimization problems based on deriving a sensitivity matrix for the small-signal response of the circuit.