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Jansson, Christer
Publications (5 of 5) Show all publications
Svärd, D., Jansson, C. & Alvandpour, A. (2013). A readout IC for an uncooled microbolometer infrared FPA with on-chip self-heating compensation in 0.35 mu m CMOS. Analog Integrated Circuits and Signal Processing, 77(1), 29-44
Open this publication in new window or tab >>A readout IC for an uncooled microbolometer infrared FPA with on-chip self-heating compensation in 0.35 mu m CMOS
2013 (English)In: Analog Integrated Circuits and Signal Processing, ISSN 0925-1030, E-ISSN 1573-1979, Vol. 77, no 1, p. 29-44Article in journal (Refereed) Published
Abstract [en]

This paper describes a readout integrated circuit architecture for an infrared focal plane array intended for infrared network-attached video cameras in surveillance applications. The focal plane array consists of 352 x 288 uncooled thin-film microbolometer detectors with a pitch of 25 mu m, enabling ambient temperature operation. The circuit features a low-noise readout path, detector resistance mismatch correction and a non-linear ramped current pulse scheme for the electrical biasing of the detectors in order to relax the dynamic range requirement of amplifiers and the ADC in the readout channel, imposed by detector process variation and self-heating during readout. The design is implemented in a 0.35-mu m standard CMOS process and two versions of a smaller 32 x 32-pixel test chip have been fabricated and measured for evaluation. The latest test chip achieves a dynamic range of 97 dB and an input-referred RMS noise voltage of 6.4 mu V yielding an estimated NETD value of 26 mK with f/1 optics. At a frame rate of 60 FPS the chip dissipates 170 mW of power from a 3.4 V supply.

Place, publisher, year, edition, pages
Springer Verlag (Germany), 2013
Keywords
Readout integrated circuit, Uncooled microbolometer, Infrared imaging, High-resolution data conversion, Self-heating compensation, Bias heating compensation
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-100032 (URN)10.1007/s10470-013-0116-9 (DOI)000324828000004 ()
Available from: 2013-10-25 Created: 2013-10-25 Last updated: 2019-09-05
Svärd, D., Jansson, C. & Alvandpour, A. (2012). A Readout Circuit for an Uncooled IR Camera With Mismatch and Self-Heating Compensation. In: NORCHIP 2012: . Paper presented at 30th NORCHIP conference (NORCHIP 2012), the Nordic microelectronics event, 12-13 November 2012, Copenhagen, Denmark (pp. 1-4). IEEE
Open this publication in new window or tab >>A Readout Circuit for an Uncooled IR Camera With Mismatch and Self-Heating Compensation
2012 (English)In: NORCHIP 2012, IEEE , 2012, p. 1-4Conference paper, Published paper (Refereed)
Abstract [en]

This paper presents a readout integrated circuit for an infrared focal plane array intended to be used in infrared network attached video cameras in surveillance applications. The focal plane array consists of 352×288 uncooled microbolometer detectors with a pitch of 25 µm. The circuit features mismatch correction and a non-linear ramped current pulse scheme for biasing of the detectors, in order to relax the dynamic range requirement of preamplifiers and ADC imposed by detector process variation and self-heating during readout. The integrated circuit is designed in a 0.35 µm standard CMOS process and a smaller 32×32 size test chip has been fabricated for verification. The test chip shows RMS input referred noise of 17 µV at 60 frames/second and dissipates 170 mW of power.

Place, publisher, year, edition, pages
IEEE, 2012
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:liu:diva-86147 (URN)10.1109/NORCHP.2012.6403138 (DOI)978-1-4673-2221-8 (ISBN)978-1-4673-2223-2 (ISBN)978-1-4673-2222-5 (ISBN)
Conference
30th NORCHIP conference (NORCHIP 2012), the Nordic microelectronics event, 12-13 November 2012, Copenhagen, Denmark
Available from: 2012-12-07 Created: 2012-12-07 Last updated: 2019-09-05
Svärd, D., Jansson, C. & Alvandpour, A. (2011). A Readout Circuit for an Uncooled IR Camera with Mismatch and Self Heating Compensation. In: Swedish System-on-Chip Conference (SSOCC). Paper presented at SSoCC. Varberg, Sweden: IEEE Solid-State Circuits Society
Open this publication in new window or tab >>A Readout Circuit for an Uncooled IR Camera with Mismatch and Self Heating Compensation
2011 (English)In: Swedish System-on-Chip Conference (SSOCC), Varberg, Sweden: IEEE Solid-State Circuits Society, 2011Conference paper, Published paper (Other academic)
Place, publisher, year, edition, pages
Varberg, Sweden: IEEE Solid-State Circuits Society, 2011
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:liu:diva-73043 (URN)
Conference
SSoCC
Available from: 2011-12-14 Created: 2011-12-14 Last updated: 2019-09-05
Jansson, C. & Svärd, D. (2010). Readout Circuit for an Infrared Bolometer Array Operating at Ambient Temperature. In: Swedish System-on-Chip Conference. Paper presented at SSoCC.
Open this publication in new window or tab >>Readout Circuit for an Infrared Bolometer Array Operating at Ambient Temperature
2010 (English)In: Swedish System-on-Chip Conference, 2010Conference paper, Published paper (Other academic)
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-65486 (URN)
Conference
SSoCC
Available from: 2011-02-08 Created: 2011-02-08 Last updated: 2011-02-11
Svärd, D., Jansson, C. & Alvandpour, A. (2010). Read-Out Electronics for Infrared Network Cameras for Surveillance. In: Proc. National Symposium on Technology and Methodology for Security and Crisis Management. Paper presented at TAMSEC (pp. 18-18).
Open this publication in new window or tab >>Read-Out Electronics for Infrared Network Cameras for Surveillance
2010 (English)In: Proc. National Symposium on Technology and Methodology for Security and Crisis Management, 2010, p. 18-18Conference paper, Published paper (Refereed)
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-65491 (URN)
Conference
TAMSEC
Available from: 2011-02-08 Created: 2011-02-08 Last updated: 2019-09-05
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