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This paper addresses the problem of diagnosis of flash ADC's and proposes a fault diagnosis technique which employs the Differential NonLinearity (DNL) test data for fault location and identification of the analog components in the converter. In the flash ADC, a fault causes deviation of DNL data from the ideal one. Hence, DNL data can be considered as a functional signature of the ADC. This property is employed for fault diagnosis. DNL patterns are used for fault location, and DNL data aredoi:10.1109/82.502317 fatcat:kbp65vw4tvdsnjs4cnt2e5xnp4