Oscillation-Based Test in Data Converters: On-Line Monitoring

This paper discusses the test of data converters using the so-called Oscillation Based Test (OBT) approach [1]. Extension of the concept as applied to filters and sigma-delta converters are considered, paying attention to those applications where monitoring along the circuit lifetime can be worthwhile, as is the case for hostile environments. In this case, detection of threshold voltage shifting produced by Total Ionizing Dose (TID) is an example of what can be done by resorting to OBT.