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Smart sensor ASIC for nuclear power monitoring

Mixed-signal integrated circuits are used in a variety of applications where ionizing radiation is present, including satellites, space vehicles, nuclear reactor monitoring, medical imaging, and cancer therapy. While total ionizing radiation is present in each of these environments, the type of radiation (e.g. heavy ions vs. high-energy x-rays) and other environmental factors present unique challenges to the mixed-signal designer. This paper discusses a Smart Sensor radiation hardened, mixed-signal, application specific integrated circuit (ASIC) specifically designed for sensor monitoring in a nuclear reactor environment. Results after exposure to gamma rays, neutrons, and temperatures up to 200 °C are reported.