Title :
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
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;
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
DOI :
10.1109/PRIMEASIA.2009.5397376
