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CMOS readout circuit allowing microbolometer arrays to operate without temperature stabilisation

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3 Author(s)
Kang, S.G. ; Dept. of Electr. Eng. & Comput. Sci., KAIST, Daejeon, South Korea ; Lee, Y.S. ; Lee, H.C.

A new CMOS readout circuit that controls the non-uniformity of microbolometer arrays as a function of operating temperature change is described. This circuit provides a nonlinear bias current for operating temperature using a MOS transistor that is operated in the subthreshold region. This approach allows microbolometer arrays to operate without temperature stabilisation up to an operating temperature change of approximately 40K.

Published in:

Electronics Letters  (Volume:40 ,  Issue: 23 )