CZT Frisch capacitance device uses two flat electrode connecting the cathode side of metal layer and connected

and insulating layer between the isolation. According to Frisch capacitance detector structure and the parameters of pre-amplifier

ac coupling was used. The depletion of high transconductance FET as the input stage

the composition of a capacitor and resistance as the feedback of the charge sensitive preamplifier were selected. The results show the design and manufacture of low noise

high-performance of the pre-amplifier for CZT Frisch detector is successful. Finally

the test results were given.