An approach to the on-line testing of operational amplifiers

Author

Velasco-Medina, J. ; Nicolaidis, M. ; Lubaszewski, M.

Author_Institution

TIMA/INPG, Grenoble, France

fYear

1998

fDate

2-4 Dec 1998

Firstpage

290

Lastpage

295

Abstract

A new approach for the on-line testing of operational amplifiers embedded into analog and mixed-signal circuits is presented in this paper. A built-in detector is used for providing an on-line test signal, which is suitable for concurrent error detection in operational amplifiers. The fault detection strategy is based on monitoring via an analog checker the normal output/input and the on-line signal of operational amplifiers. In this context, the circuitry associated with a self-checking operational amplifier is presented. In order to evaluate the fault coverage and the performance degradation in the resulting operational amplifier, extensive simulations are performed considering catastrophic faults

Keywords

analogue integrated circuits; automatic testing; error detection; integrated circuit testing; mixed analogue-digital integrated circuits; operational amplifiers; analog checker; analog circuits; built-in detector; catastrophic faults; concurrent error detection; embedded opamps; fault coverage estimation; fault detection strategy; mixed-signal circuits; online testing; operational amplifiers; performance degradation; self-checking op amp; Automatic testing; Circuit faults; Circuit simulation; Circuit testing; Detectors; Electrical fault detection; Fault detection; Monitoring; Operational amplifiers; Safety;

fLanguage

English

Publisher

ieee

Conference_Titel

Test Symposium, 1998. ATS '98. Proceedings. Seventh Asian

ISSN

1081-7735

Print_ISBN

0-8186-8277-9

Type

conf

DOI

10.1109/ATS.1998.741627

Filename

741627