Theoretical and Practical Aspects of IDDQ Settling-Impact on Measurement Timing and Quality

This paper discusses the parameters involved in making fast and reliable quiescent current (IDDQ or ISSQ) measurements, with particular attention to the test setup and the point of measurement. For that purpose a detailed theoretical and practical study was made of the IDDQ settling behaviour in function of proper measurement instrument positioning. The conclusions are that instrument positioning is a critical factor in function of achieving fast, high resolution, reliable and repeatable IDDQ measurements needed to support advanced decision making strategies and Nanotechnology IDDQ application, and that the use of add-on instrumentation offers the best perspectives to reach these goals.