Variation-aware structural synthesis of analog circuits via hierarchical building blocks and structural homotopy

Authors:
Trent McConaghy;Pieter Palmers;Michiel Steyaert;Georges G. E. Gielen
Affiliations:
Solido Design Automation Inc., Saskatoon, Canada and Microelectronics and Sensors Group, Department Electrical Engineering, Katholieke Universiteit Leuven, Leuven, Belgium;Mephisto Design Automation, Leuven, Belgium and ESAT-MICAS, Katholieke Universiteit Leuven, Leuven, Belgium;ESAT-MICAS, Katholieke Universiteit Leuven, Leuven, Belgium;ESAT-MICAS, Katholieke Universiteit Leuven, Leuven, Belgium
Venue:
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Year:
2009

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Abstract

This paper presents MOJITO-R, a tool that performs variation-aware structural synthesis of analog circuits. It returns trustworthy topologies by searching across a space of thousands of possible topologies defined by hierarchically organized analog structural building blocks. "Structural homotopy" conducts search at several objective-function tightening levels (numbers of process corners) simultaneously. Multiobjective evolutionary search returns sized topologies which trade off power, area, performances, and yield. An experimental validation run returned 78 643 Pareto-optimal designs, having 982 sized topologies with various specification/yield combinations. A decision tree is extracted to visualize the performance-topology relationship.