Diagnosing Resistive Bridges Using Adaptive Techniques

A systematic procedure for locating resistive bridges is presented. Critical path tracing is used to identify a set of “suspect” bridges whose presence could explain all of the observed faulty behavior of the circuit for the original test set. The set of suspects is then reduced by adaptively applying additional tests derived from the failing vector pairs in the original test set. Unlike other approaches, the approach presented here is not based on any bridge fault modeling and does not require any fault simulation.