Clustering Based Techniques for IDDQ Testing

  • Authors:
  • Sri Jandhyala;Hari Balachandran;Anura P. Jayasumana

  • Affiliations:
  • -;-;-

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

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Abstract

A new technique for evaluating IDDQ data using aclustering based approach is presented. While prevailingIDDQ test techniques rely on a fixed threshold or thecurrent signature of an IC, the proposed technique relieson abnormalities of the IDDQ distribution of a device withrespect to other devices in the test set. Results ofapplying this technique to data collected on a highvolume graphics chip are described. Results are alsocompared to the conventional single threshold approach,and benefits of the new technique are presented.