Speed-up of High Accurate Analog Test Stimulus Optimization

  • Authors:
  • Abdelhakim Khouas;Anne Derieux

  • Affiliations:
  • -;-

  • Venue:
  • ITC '99 Proceedings of the 1999 IEEE International Test Conference
  • Year:
  • 1999

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Abstract

Analog integrated circuit testing and diagnosis is a verychallenging problem.The inaccuracy of measurements,the infinite domain of possible values and the parameterdeviations are among the major difficulties.During theprocess of optimizing production tests, MonteCarlo simulation is often needed due to parameter variations,but because of its expensive computational cost,it becomes the bottleneck of such a process.This paperdescribes a new technique to reduce the number of simulationsrequired during analog fault simulation.Thisleads to the optimization of production tests subjectedto parameter variations.In section I a review of thestate of the art is presented, section II introduces the algorithmand describes the methodology of our approach.The results on CMOS 2-stage opamp and conclusionsare given in sections III and IV.