Measurement selection for parametric IC fault diagnosis

Abstract

Abstract-

Design of robust test criteria in analog testing

“…In [17,8], the authors report the importance of having training samples near the boundary of the acceptance region, to obtain good estimates of the parameters required for the test criterion. In order to obtain sample elements on both sides of the separating hyperplane and to retain the physically interpretability, we generate training and validation sample elements according to a normal distribution with an expected value x w , while keeping covariance matrix x .…”

“…Please note that this extension of the definition of a faulty circuit is based on similar considerations as in [8,9,23]. In the approach proposed in this paper, these rather crude test criteria take effect only when no given specification induces a reasonable limit for permissible parameter deviations.…”

“…In this situation, statistical methods for decision making are often applied to derive test criteria for the detection of parametric faults based on preferred measurements [7,8,9]. In order to obtain an applicable test design, the performance of the determined test criteria has to be investigated, not only for the nominal case but also in the presence of measurement noise.…”

Design based analog testing by characteristic observation inference

“…A hypothesis test is performed with respect to parametric faults. In [7], neural networks are used for fault diagnosis of analog circuits, and different methods for establishing training data sets are investigated. In both approaches, the fault model with respect to parametric faults is geometrically defined in the parameter space.…”

“…In both approaches, the fault model with respect to parametric faults is geometrically defined in the parameter space. In [6], hyperellipsoids that represent the process statistics are used, while in [7], coordinate hyperplanes are assumed that bound parameter tolerances. As analog testing consists of validating a circuit's functionality, e.g.…”