Exploiting SEU Data Analysis to Extract Fast SET Pulses
A method is presented to enhance single-event transient (SET) measurements by overcoming a common experimental limitation of minimum measurable pulse widths. As technology scales, SETs decrease in width and measurement circuits fundamentally cannot capture every fast transient capable of causing an error. A method has been developed to overcome this limitation by using a latch as a feedback-assisted fast transient capture circuit. Single-event upset (SEU) data are combined with SET data to extend pulsewidth acuity such that pulses faster than the minimum measurable SET pulsewidth are extracted. The method has been applied for a 14-/16-nm bulk FinFET technology node and predictions for logic single-event cross section reveal the impact of fast transients on the radiation response of logic circuits. Results including the extracted fast transients represent upper bound SEU cross sections. For high linear energy transfer (LET) particle irradiation, accounting for fast transients using the developed method results in negligible variation in logic SE cross section. However, for low LET particle irradiation, the method results in an order of magnitude increase in logic SE cross section.