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Identification of Defective CMOS Devices using Correlation and egression Analysis of Frequency Domain Transient Signal Data

By James F. Plusquellic, Donald M. Chiarulli and Steven P. Levitant


Transient Signal Analysis is a digital device testing method that is based on the analysis of voltage transients at multiple test points and on Io0 switching transients on the supply rails. We show that it is possible to identify defective devices by analyzing the transient signals produced at test points on paths not sensitized from the defect site. The small signal variations produced at these test points are analyzed in the frequency domain. Correlation analysis shows a high degree of correlation in these signals across the outputs of defect-free devices. We use regression analysis to show the absence of correlation across the outputs of bridging and open drain defective devices. Transient Signal Analysis (TSA) is a parametri

Year: 2013
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