Diagnosis method based on /spl Delta/Iddq probabilistic signatures: experimental results

  • Authors:
  • Claude Thibeault;Luc Boisvert

  • Affiliations:
  • -;-

  • Venue:
  • ITC '98 Proceedings of the 1998 IEEE International Test Conference
  • Year:
  • 1998

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Abstract

The purpose of this paper is to present experimentalresults validating a diagnosis method based on differentialIddq probabilistic signatures and on maximum likelihoodestimation. First, SEMATECH Project S121 data is usedto support assumptions about current behavior. Thenresults obtained from an IC monitor containingcontrollable faults clearly show the capability of themethod to identify the type of actual activated faults, inspite of a strong experimental current standard variation.These results validate previous simulation procedures,which are applied to estimate what can be expected withmore common current standard variations.