Processing and circuit design enhance a data converter's radiation tolerance

Radiation-hard CMOS/SOS processing was applied to a novel comparator-invertor circuit design to develop 6- and 8-bit parallel circuits featuring high-speed operation, low power consumption, and total-dose radiation tolerance up to 1 Mrad(Si). The heart of the radiation tolerant ADC design is a novel CMOS autozero comparator. The autozero function serves to eliminate any comparator offset. The comparator design is also tolerant of voltage threshold variations associated with total-dose radiation.<
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