presentation slides - Texas A&M University
presentation slides - Texas A&M University
presentation slides - Texas A&M University
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Current Signature [Gattiker,Maly]<br />
Signature – sorted I DDQ measurements<br />
A chip with active defect shows a “step” or<br />
“jump” in the signature<br />
Indicates multiple paths current can take<br />
Fault-free chip shows smooth signature<br />
Also true for passive defects<br />
Cannot screen passive and subtle active<br />
defects