TY - GEN
T1 - Prototype ROIC with differential pixel readout for uncooled IR detector arrays
AU - Hwang, Sang Joon
AU - Ryu, Seung Woo
AU - Shin, Ho Hyun
AU - Sung, Man Young
PY - 2007
Y1 - 2007
N2 - As infrared light is radiated, the CMOS Readout IC (ROIC) for the microbolometer type infrared sensor detects voltage or current when the resistance value in the bolometer sensor varies. One of the serious problems in designing the ROIC is that resistances in the bolometer and replica resistor have process variation. This means that each pixel does not have the same resistance, causing serious fixed pattern noise problems in sensor operations, In this paper, differential input stage readout architecture is suggested for bias offset reduction, noise immunity and high sensing margin. In addition, using this scheme the effects of a process variation problem and various other bias heating noise problems, are reduced. In this paper, a prototype ROICs, intended for uncooled microbolometer infrared focal plane array, is designed and fabricated. The proposed architecture is demonstrated by fabrication of a prototype consisting of 32 × 32 pixels fabricated in a 0.25-μm CMOS process.
AB - As infrared light is radiated, the CMOS Readout IC (ROIC) for the microbolometer type infrared sensor detects voltage or current when the resistance value in the bolometer sensor varies. One of the serious problems in designing the ROIC is that resistances in the bolometer and replica resistor have process variation. This means that each pixel does not have the same resistance, causing serious fixed pattern noise problems in sensor operations, In this paper, differential input stage readout architecture is suggested for bias offset reduction, noise immunity and high sensing margin. In addition, using this scheme the effects of a process variation problem and various other bias heating noise problems, are reduced. In this paper, a prototype ROICs, intended for uncooled microbolometer infrared focal plane array, is designed and fabricated. The proposed architecture is demonstrated by fabrication of a prototype consisting of 32 × 32 pixels fabricated in a 0.25-μm CMOS process.
KW - Facal plane array
KW - Fixed pattern noise
KW - ROIC
KW - Uncooled microbolometer
UR - http://www.scopus.com/inward/record.url?scp=34247400288&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34247400288&partnerID=8YFLogxK
U2 - 10.1117/12.695636
DO - 10.1117/12.695636
M3 - Conference contribution
AN - SCOPUS:34247400288
SN - 0819465232
SN - 9780819465238
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Smart Structures, Devices, and Systems III
T2 - Smart Structures, Devices, and Systems III
Y2 - 11 December 2006 through 13 December 2006
ER -