Design and Realization of Drive Circuit for Uncooled Infrared Focal Plane Array

Abstract

This paper presents a design method for drive circuit system of uncooled infrared detector of ULIS Company. On basis of theoretic analysis of uncooled infrared detector structure and demands for drive circuit, high precision regulated power supply, and second order active filter circuit are adopted to produce high precision, low noise adjustable bias voltage. Dividing frequency through FPGA, digital time sequence signal is produced to ensure the steadily and reliably of the detector. The simulation and test results indicate that the output bias voltage is consistent with the design value, and can ensure stability of the detector.