A High Linearity Readout Integrated Circuit for Uncooled IR Detector

In this paper, we presented a CMOS microbolometer design integrated with a linearity readout circuit using 0.18µm CMOS process. The air-bridge microbolometer was designed with polycrystalline silicon film while a capacitive trans-impedance amplifier (CTIA) was used for detecting the weak current from IR sensors. Simulation results shows that the noise equivalent power of detector is about 1nW and the static power consumption is 163µW for CTIA with a small area of 30x40 µm ² .