Journal of Electronic Testing

, Volume 9, Issue 1–2, pp 43–57 | Cite as

Fault-based ATPG for linear analog circuits with minimal size multifrequency test sets

  • S. Mir
  • M. Lubaszewski
  • B. Courtois
Article
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Abstract

An automatic test pattern generation (ATPG) procedure for linear analog circuits is presented in this work. A fault-based multifrequency test approach is considered. The procedure selects a minimal set of test measures and generates the minimal set of frequency tests which guarantee maximum fault coverage and, if required, maximal fault diagnosis, of circuit AC hard/soft faults. The procedure is most suitable for linear time-invariant circuits which present significant frequency-dependent fault effects.

For test generation, the approach is applicable once parametric tests have determined DC behaviour. The advantage of this procedure with respect to previous works is that it guarantees a minimal size test set. For fault diagnosis, a fault dictionary containing a signature of the effects of each fault in the frequency domain is used. Fault location and fault identification can be achieved without the need of analog test points, and just in-circuit checkers with an observable go/no-go digital output are required for diagnosis.

The procedure is exemplified for the case of an analog biquadratic filter. Three different self-test approaches for this circuit are considered. For each self-test strategy, a set of several test measures is possible. The procedure selects, in each case, the minimal set of test measures and the minimal set of frequency tests which guarantee maximum fault coverage and maximal diagnosis. With this, the self-test approaches are compared in terms of the fault coverage and the fault diagnosability achieved.

Keywords

analog ATPG fault-based testing analog BIST fault diagnosis 
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Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • S. Mir
    • 1
    • 2
  • M. Lubaszewski
    • 3
  • B. Courtois
    • 4
  1. 1.TIMAGrenobleFrance
  2. 2.CNM (CSIC)SevilleSpain
  3. 3.DELET/UFRGSPorto AlegreBrazil
  4. 4.TIMAGrenobleFrance

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