Current testing viability in dynamic CMOS circuits

Current testing of dynamic CMOS integrated circuits with single phase clock is investigated. The analysis is performed on a single phase stage dynamic CMOS module in the presence of internal bridging defects of low resistance. These defects produce intermediate voltage levels which cause difficulties to the logic testing methods based on voltage level comparison. It is shown that current testing may be an effective complement to the usual logic methods. Theoretical bounds on the coverage of single internal bridges obtainable by current testing are given.