IDD Pulse Response Testing Applied to Complex CMOS ICs

  • Authors:
  • J. S. Beasley;A. W. Righter;C. J. Apodaca;S. Pour-Mozafari;D. Huggett

  • Affiliations:
  • -;-;-;-;-

  • Venue:
  • ITC '97 Proceedings of the 1997 IEEE International Test Conference
  • Year:
  • 1997

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Abstract

This paper presents test results for detecting defects incomplex ICs by analyzing the changes observed in thepower-on transient power supply currents for the IC. Thistest technique, called iDD Pulse Response Testingsimultaneously pulses the VDD and VSS power supply railswhile applying a fixed midrange bias voltage to all inputs tothe DUT. The resulting power on transient currentsignature is then analyzed for the presence of abnormalbehavior. Two methods of analyzing the transient currentsignature waveform are compared for two types of complexCMOS ICs. The type of defects detected by the test as well asapplications of this method to production test are discussed.