An analysis and testing of operation induced faults in MOS VLSI

Abstract

The operation induced faults in CMOS circuits are discussed. The significance of these faults for high density, small geometry circuits is pointed out. For modeling purposes the effects of these faults are correlated with classical fault models. A conductance fault model is presented to incorporate these faults. A test scheme to detect these faults is suggested which is based on the measurement of supply current. A scheme to generate test patterns for these faults is also outlined.<>