Diagnosis Method Using ΔIDDQ Probabilistic Signatures: Theory and Results

  • Authors:
  • Claude Thibeault

  • Affiliations:
  • Department of Electrical Engineering, École de technologie supérieure, 1100, Notre-Dame Ouest, Montréal (Québec), Canada, H3C 1K3. thibeault@ele.etsmtl.ca

  • Venue:
  • Journal of Electronic Testing: Theory and Applications
  • Year:
  • 2000

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Abstract

This paper presents a diagnostic method based on differential I_DDQ probabilistic signatures, inspired by telecommunications systems. The method and its unique features are described. Then, results from an IC monitor containing controllable faults show the capability of the method to diagnose actual activated faults, despite a strong experimental current standard variation. These results validate previous simulation procedures, which are applied to quantify effects not covered by the monitor experiment, that is, the effect of the load of a bridged node and the effect of the bridge resistance value. These experimental and simulation results reveal the robustness of the proposed diagnosis method, that has identified and located every single fault considered so far.