CMOS readout integrated circuit for uncooled microbolometers without substrate temperature stabilization

Author

Jian, L.V. ; Longcheng Que ; Linhai Wei ; Yun Zhou ; Yadong Jiang

Author_Institution

State Key Lab. of Electron. Thin Film & Integrated Devices, Univ. of Electron. Sci. & Technol. of China, Chengdu, China

fYear

2013

fDate

20-22 Dec. 2013

Firstpage

493

Lastpage

496

Abstract

A compact and low noise CMOS readout integrated circuit (ROIC) for uncooled microbolometers without substrate temperature stabilization is described. This proposed readout approach is based on the differential current mirror readout architecture. An experimental ROIC has been designed and implemented on silicon using a 0.5 μm COMS technology. The proposed circuitry allows microbolometer array non-uniformity control over a wide temperature change range of approximately 60K while maintaining better than 75 mK NETD using f/1.0 optics.

Keywords

CMOS integrated circuits; bolometers; current mirrors; differential amplifiers; elemental semiconductors; integrated circuit design; readout electronics; sensor arrays; silicon; CMOS readout integrated circuit; ROIC; Si; differential current mirror readout architecture; microbolometer array nonuniformity control; size 0.5 mum; substrate temperature stabilization; uncooled microbolometer; Arrays; Bolometers; Noise; Resistance; Substrates; Temperature; Temperature dependence; integrated circuit; noise equivalent temperature difference; readout; temperature stabilization; uncooled microbolometers;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechatronic Sciences, Electric Engineering and Computer (MEC), Proceedings 2013 International Conference on

Conference_Location

Shengyang

Print_ISBN

978-1-4799-2564-3

Type

conf

DOI

10.1109/MEC.2013.6885117

Filename

6885117