Ultra-low-noise readout integrated circuit for uncooled microbolometers

摘要

A low-noise readout architecture for uncooled microbolometer focal plane arrays is described. A 40 × 30 uncooled microbolometer focal plane array based on the low-noise ROIC was implemented on silicon using a 0.5 μm CMOS technology. Total output noise voltage is 260 μN RMS. Experimental values of voltage responsivities of 3.98 × 10~5 V/W on average at 1 Hz modulation frequency have been achieved.