In this paper, a versatile complementary metal oxide semiconductor (CMOS) readout integrated circuit (ROIC) for microbolometric infrared focal plane array (IRFPA) is presented. By applying a variable column-shared current mirror (CM) proportional circuit, the ROIC can be used in applications on different occasions from very high background to quite low background. With column-shared blind bolometer, CM proportional circuit and capacitor feedback trans-impedance amplifier (CTIA) integration circuit, the ROIC has high performance such as high gain, low noise, low power dissipation and large outp...
