There are some types of faults in analogue and mixed signal circuits which are very difficult to detect using either voltage or current based test methods. However, it is possible to detect these faults if we add to the conventional dynamic power supply current test methods I DDT , the analysis of the changes in the slope of this dynamic power supply current . In this work, we present a Built-In Current Sensor (BICS) which is able to process the highest frequency components in the dynamic power supply current of the circuit under test (CUT). The BICS add to the resistive sensor an inductance made from a gyrator and a capacitor to carry out the current to voltage conversion. Moreover, the proposed test method improves the fault coverage in continuous circuits and switched current circuits as well.

Abstract. The increase of life expectancy in the European Union, and the high risk of cardiovascular diseases associated with age, are some of the main factors to contribute to the rise of healthcare costs. An intelligent stent (e-stent), capable of obtaining and transmitting real-time measurements of physiological parameters for its clinical consultation, can be a useful tool for long-term monitoring, diagnostic, and early warning system for arterial blockage without patient hospitalization. In this paper, a behavioural model of capacitive MicroElectro-Mechanical (MEMS) pressure sensor is proposed and simulated under several restenosis conditions. Special attention has been given to the need of an accurate fault model, obtained from realistic finite-element simulations,to ensure long-term reliability; particularly for those faults whose behavior cannot be easily described by an analytical model.

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