Pixel readout circuit with novel background suppression techinque for LWIR applications

Author

Xie, L. ; Xia, X.J. ; Zhou, Y.F. ; Sun, W.F.

Author_Institution

Nat. ASIC Syst. Eng. Center, Southeast Univ., Nanjing, China

fYear

2009

fDate

19-21 Jan. 2009

Firstpage

345

Lastpage

348

Abstract

A novel pixel readout circuit using a switched-capacitor integrator mode background suppression technique is proposed for long wavelength infrared (LWIR) focal plane arrays. It has ultra-low background suppression non-uniformity (BSNU) and no additional shot noise when suppressing the background current for improving signal-to-noise ratio and dynamic range. The BSNU can be as low as 529 ppm for a current mismatch of 40% and a background current of 100 nA.

Keywords

focal planes; readout electronics; switched capacitor networks; LWIR applications; background current; background suppression nonuniformity; current mismatch; long wavelength infrared focal plane arrays; pixel readout circuit; signal-to-noise ratio; switched-capacitor integrator mode background suppression technique; Background noise; Capacitors; Circuit noise; Dynamic range; Infrared detectors; Signal to noise ratio; Switches; Switching circuits; Temperature; Voltage; LWIR; background suppression; readout circuit;

fLanguage

English

Publisher

ieee

Conference_Titel

Microelectronics & Electronics, 2009. PrimeAsia 2009. Asia Pacific Conference on Postgraduate Research in

Conference_Location

Shanghai

Print_ISBN

978-1-4244-4668-1

Electronic_ISBN

978-1-4244-4669-8

Type

conf

DOI

10.1109/PRIMEASIA.2009.5397376

Filename

5397376