Title :
Time-based pixel-level ADC with wide dynamic range for 2-D LWIR applications
Author :
Woo, D.H. ; Hwang, C.H. ; Lee, Y.S. ; Lee, H.C.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejon, South Korea
fDate :
7/7/2005 12:00:00 AM
Abstract :
A readout circuit involving a time-based pixel-level ADC is studied for two-dimensional long wavelength infrared focal plane arrays (2-D LWIR FPAs). The integration time of each pixel can be optimised individually and automatically. Using a time-based pixel-level ADC with two-step background suppression, the signal-to-noise ratio and dynamic range can be improved to 88.8 and 95.1 dB, respectively.
Keywords :
analogue-digital conversion; focal planes; readout electronics; 2D LWIR FPA; analog-to-digital converter; background suppression; long wavelength infrared focal plane arrays; pixel-level ADC; readout circuit; signal to noise ratio;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20051297
