{"title":"An Overview of IDDQ Sensor Techniques","authors":"S. Roy, A. Kornfeld","doi":"10.1109/SSST.1992.712174","DOIUrl":null,"url":null,"abstract":"Normally for CMOS devices, current and power is consumed only when a device switches state from off-to-on or on-to-off. Defect mechanisms such as gate-oxide shorts, bridges between layers, leaky p-n junctions, or pin-hole defects can cause elevated current states that can be measured during non-transitional parts of the circuits operation. Detection of these abnormally large supply currents (IDDQ) in the power (VDD) or ground (GND) busses during a normally quiescent operating time allows detection of these physical defect mechanisms which normally are not accounted for when using simple stuck-at-fault testing. This paper presents an overview of IDDQ sensor techniques and presents an improved on-chip IDDQ current sensor which increases test application time from 1 MHz [1] to 8 Mhz.","PeriodicalId":359363,"journal":{"name":"The 24th Southeastern Symposium on and The 3rd Annual Symposium on Communications, Signal Processing Expert Systems, and ASIC VLSI Design System Theory","volume":"63 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1992-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The 24th Southeastern Symposium on and The 3rd Annual Symposium on Communications, Signal Processing Expert Systems, and ASIC VLSI Design System Theory","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SSST.1992.712174","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
Normally for CMOS devices, current and power is consumed only when a device switches state from off-to-on or on-to-off. Defect mechanisms such as gate-oxide shorts, bridges between layers, leaky p-n junctions, or pin-hole defects can cause elevated current states that can be measured during non-transitional parts of the circuits operation. Detection of these abnormally large supply currents (IDDQ) in the power (VDD) or ground (GND) busses during a normally quiescent operating time allows detection of these physical defect mechanisms which normally are not accounted for when using simple stuck-at-fault testing. This paper presents an overview of IDDQ sensor techniques and presents an improved on-chip IDDQ current sensor which increases test application time from 1 MHz [1] to 8 Mhz.