GaAs Analog to Digital Converter(ADC) has been widely used in various fields especially in aerospace because of its good electrical and anti-radiation properties.The anti-radiation ability of circuit is closely related to circuit design and process technology.On the base of prophase study

we research on the anti-radiation ability of LSI(Large Scale Intergrated circuit) and improve circuit design and manufacturing process technology to enhance radiation resistance of the circuit.This paper focuses on the circuit design

process technology and

γ

total dose radiation.