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Parametric fault diagnosis for analog systems using functional mapping

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2 Author(s)
Cherubal, S. ; Georgia Inst. of Technol., Atlanta, GA, USA ; Chatterjee, A.

We propose a new Simulation-After-Test (SAT) methodology for accurate diagnosis of circuit parameters in large analog circuits. Our methodology is based on constructing a non-linear regression model using prior circuit simulation, which relates a set of measurements to the circuit's internal parameters. First, we give algorithms to select measurements that give all the diagnostic information about the Circuit-Under-Test (CUT). From these selected measurements, we solve for the internal parameters of the circuit using iterative numerical techniques. The methodology has been applied to several mixed-signal test benchmark circuits and has applications in process debugging for mixed-signal integrated circuits (ICs) as well troubleshooting and repair of board level systems.

Published in:

Design, Automation and Test in Europe Conference and Exhibition 1999. Proceedings

Date of Conference:

9-12 March 1999