Prototype ROIC with differential pixel readout for uncooled IR detector arrays

Sang Joon Hwang; Seung Woo Ryu; Ho Hyun Shin; Man Young Sung

doi:10.1117/12.695636

Prototype ROIC with differential pixel readout for uncooled IR detector arrays

Sang Joon Hwang, Seung Woo Ryu, Ho Hyun Shin, Man Young Sung

Honorary professors

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

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.

Original language	English
Title of host publication	Smart Structures, Devices, and Systems III
DOIs	https://doi.org/10.1117/12.695636
Publication status	Published - 2007
Event	Smart Structures, Devices, and Systems III - Adelaide, Australia Duration: 2006 Dec 11 → 2006 Dec 13

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	6414
ISSN (Print)	0277-786X

Other

Other	Smart Structures, Devices, and Systems III
Country	Australia
City	Adelaide
Period	06/12/11 → 06/12/13

Keywords

Facal plane array
Fixed pattern noise
ROIC
Uncooled microbolometer

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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Prototype ROIC with differential pixel readout for uncooled IR detector arrays. / Hwang, Sang Joon; Ryu, Seung Woo; Shin, Ho Hyun; Sung, Man Young.

Smart Structures, Devices, and Systems III. 2007. 64141D (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6414).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Hwang, SJ, Ryu, SW, Shin, HH & Sung, MY 2007, Prototype ROIC with differential pixel readout for uncooled IR detector arrays. in Smart Structures, Devices, and Systems III., 64141D, Proceedings of SPIE - The International Society for Optical Engineering, vol. 6414, Smart Structures, Devices, and Systems III, Adelaide, Australia, 06/12/11. https://doi.org/10.1117/12.695636

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title = "Prototype ROIC with differential pixel readout for uncooled IR detector arrays",

abstract = "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.",

keywords = "Facal plane array, Fixed pattern noise, ROIC, Uncooled microbolometer",

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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.

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