A high performance read-out IC design for IR image sensor applications

Sang Jun Hwang, Ho Hyun Shin, Eun Sik Jung, Man Young Sung

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We propose a high performance ROIC for IR image sensor applications. Because a micro bolometer image sensor, used in an IR image sensor, is made by a MEMS process, the resistance of bolometers by each process does not appear same value under same IR energy incident condition. This resistance variation generates a different output signal for same input by each chip. Instead of a single input mode, we used a differential input mode to the proposed ROIC and thus, a new circuit structure that has high immunity to the process variations of micro bolometer was invented. This result is due to the characteristics of the differential input mode that suppress the commonly appeared error and amplify the differentially applied signal. Using results from a computer simulation, improvement such as that the effect of the process error on the bolometer's resistance was decreased 10-12% without an additional compensation circuit was found. Moreover we had analyzed the results by numerical methods and found that it is possible to control the gain and compensation ability by design the capacitors of the integrator appropriately. A full chip including a ROIC and a micro bolometer with 16×16 cell arrays was designed and implemented in standard 0.25um CMOS process.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume6798
DOIs
Publication statusPublished - 2008 May 15
EventMicroelectronics: Design, Technology, and Packaging III - Canberra, ACT, Australia
Duration: 2007 Dec 52007 Dec 7

Other

OtherMicroelectronics: Design, Technology, and Packaging III
CountryAustralia
CityCanberra, ACT
Period07/12/507/12/7

Fingerprint

Bolometers
bolometers
Image sensors
sensors
chips
Networks (circuits)
integrators
immunity
microelectromechanical systems
MEMS
Numerical methods
CMOS
capacitors
Capacitors
computerized simulation
Integrated circuit design
output
Computer simulation
cells

Keywords

  • IR image sensor
  • Micro bolometer
  • Process variation
  • ROIC

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Hwang, S. J., Shin, H. H., Jung, E. S., & Sung, M. Y. (2008). A high performance read-out IC design for IR image sensor applications. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 6798). [679818] https://doi.org/10.1117/12.759053

A high performance read-out IC design for IR image sensor applications. / Hwang, Sang Jun; Shin, Ho Hyun; Jung, Eun Sik; Sung, Man Young.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6798 2008. 679818.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hwang, SJ, Shin, HH, Jung, ES & Sung, MY 2008, A high performance read-out IC design for IR image sensor applications. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 6798, 679818, Microelectronics: Design, Technology, and Packaging III, Canberra, ACT, Australia, 07/12/5. https://doi.org/10.1117/12.759053
Hwang SJ, Shin HH, Jung ES, Sung MY. A high performance read-out IC design for IR image sensor applications. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6798. 2008. 679818 https://doi.org/10.1117/12.759053
Hwang, Sang Jun ; Shin, Ho Hyun ; Jung, Eun Sik ; Sung, Man Young. / A high performance read-out IC design for IR image sensor applications. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6798 2008.
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