J. Krieg et al., Hardness assurance implications of bimodal total dose response in a bipolar linear voltage comparator, IEEE NUCL S, 46(6), 1999, pp. 1627-1632
The total dose response of transistors and circuits from a single wafer lot
has been measured for high and low dose rate and elevated temperature irra
diations. A bimodal irradiation response is observed in the circuit respons
e that is shown to be a result of the input transistors. Hardness assurance
sampling plans are examined for their adequacy to deal with the bimodal re
sponse distributions.