Title :
A Unified Procedure for Fault Detection of Analog and Mixed-Mode Circuits Using Magnitude and Phase Components of the Power Supply Current Spectrum
Author :
Papakostas, Dimitris K. ; Hatzopoulos, Alkis A.
Author_Institution :
Dept. of Electron., Alexander Technol. & Educ. Inst. of Thessaloniki, Thessaloniki
Abstract :
A method using the power supply current for fault detection in analog and mixed-mode circuits is presented. A new unified fault detection procedure is introduced, and its fault detection capability is estimated. The procedure combines the rms value and the magnitude and phase components of the power supply current. Certain required discrimination factors are defined, and their values are adjusted to include circuit parameter deviations and matching dependencies for the efficient application of the method. Representative results from the simulation of an operational amplifier (opamp) and a flash analog-to-digital converter circuit are given, showing the effectiveness of the proposed method.
Keywords :
analogue-digital conversion; fault diagnosis; integrated circuit testing; mixed analogue-digital integrated circuits; operational amplifiers; power supply circuits; analog circuits; circuit parameter deviations; fault detection; flash analog-to-digital converter circuit; magnitude components; mixed-mode circuits; operational amplifier; phase components; power supply current spectrum; Analog circuits; Fourier analysis; circuit testing; fault detection; mixed-mode circuits;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2008.924932
