A built-in I/sub DDQ/ testing circuit

Although I/sub DDQ/ testing has become a widely accepted defect detection technique for CMOS ICs, its effectiveness in very deep submicron technologies is threatened by the increased transistor leakage current. In this paper, a built-in I/sub DDQ/ testing circuit is presented, that aims to extend the viability of I/sub DDQ/ testing in future technologies and first experimental results are discussed.