Impact of within-wafer process variability on radiation response
The impact of sample-to-sample variability on total ionizing dose (TID) response within-wafer for a 180-nm CMOS technology has been studied. Large variations in leakage current and threshold voltage shift after irradiation are observed. These variations are mainly contributed to the process variability. The process steps which cause TID response variation are preliminarily discussed.
cmos devices ionizing radiation sti total dose effects