Title :
An approach to the on-line testing of operational amplifiers
Author :
Velasco-Medina, J. ; Nicolaidis, M. ; Lubaszewski, M.
Author_Institution :
TIMA/INPG, Grenoble, France
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;
Conference_Titel :
Test Symposium, 1998. ATS '98. Proceedings. Seventh Asian
Print_ISBN :
0-8186-8277-9
DOI :
10.1109/ATS.1998.741627
