Title :
Use of power supply current and output voltage observation for testing large mixed-signal devices
Author :
da Silva, J. Machado ; Matos, J. Silva ; Bell, Ian M. ; Taylor, Gaynor E.
Author_Institution :
Fac. Eng. de Engenhari, Univ. do Porto, Portugal
Abstract :
Power supply current monitoring is a promising technique for the development of new test methodologies for analogue and mixed-signal circuits, following the success attained in the digital domain. This paper shows that improved test efficiency and confidence is obtained when both functional output voltage and power supply current signals are observed. Results obtained from simulation of a number of circuits are presented comparing Fault Coverage, Normalised Deviation, and the Coefficient of Variation of faulty responses deviation amplitudes. Also, different test stimuli are compared to evaluate their suitability for testing
Keywords :
fault diagnosis; integrated circuit interconnections; integrated circuit measurement; integrated circuit testing; mixed analogue-digital integrated circuits; monitoring; current monitoring; fault coverage; faulty responses deviation amplitudes; functional output voltage; mixed-signal devices; normalised deviation; output voltage observation; power supply current; test efficiency; test stimuli; Circuit faults; Circuit simulation; Circuit testing; Current supplies; Electronic equipment testing; Monitoring; Power engineering and energy; Power supplies; System testing; Voltage;
Conference_Titel :
Circuits and Systems, 1995., Proceedings., Proceedings of the 38th Midwest Symposium on
Conference_Location :
Rio de Janeiro
Print_ISBN :
0-7803-2972-4
DOI :
10.1109/MWSCAS.1995.510310
