Subband Filtering Scheme for Analog and Mixed-Signal Circuit Testing

  • Authors:
  • Jeongjin Roh;Jacob A. Abraham

  • Affiliations:
  • -;-

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

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Abstract

A new technique is proposed to analyze and compress theoutput responses from analog circuits. We first describe thesubband filtering scheme to decompose responses from theanalog circuit under test (CUT). A subband filter or wavelettakes the response, then generates the decomposed signalsfor each frequency band. The decomposed signal for eachfrequency band is fed into its respective integrator. Twokinds of wavelets are used to decompose the test responseand effectively detect the faults in the circuit. Implementationissues including hardware overhead are also discussed.