correlation between i/sub ddq/ testing quality and sensor accuracy
In existing approaches to I/sub DDQ/ fault simulation, the lack of estimate of the faulty current values in comparison with the instrumentation sensitivity prevents realistic assessments of testing quality. This paper fills the gap, presenting a method to estimate the faulty current considering the device conductances as well as the bridging resistance, and computing the fault coverage as a function of the sensor accuracy. Such information helps in the design of current monitoring equipments.
i/sub ddq/ testing quality sensor accuracy fault simulation faulty current values device conductances bridging resistance fault coverage current monitoring equipment circuit analysis computing fault location fault diagnosis cmos integrated circuits cmos integrated circuit testing