Title :
ROIC with adaptive reset control for improving dynamic range of IR FPAs
Author :
Woo, Doohyung ; Nam, Ilku ; Choi, Joonwoo
Author_Institution :
Sch. of Inf., Commun., & Electron. Eng., Catholic Univ. of Korea, South Korea
Abstract :
A new readout integrated circuit involving an adaptive reset control was studied for 2-D infrared focal plane arrays. The integration time of each pixel can be optimized adaptively. Hence, the readout circuit has a wide dynamic range and good signal-to-noise ratio characteristics. The readout circuit was fabricated with a 0.35 μm 2-poly 4-metal CMOS process for a 128 × 128 long wavelength infrared array with a pixel size of 50 μm × 50 μm. The adaptive reset control with two-step background suppression improves the signal-to-noise ratio to 87 dB and the dynamic range to 95.4 dB.
Keywords :
CMOS integrated circuits; adaptive control; focal planes; infrared detectors; readout electronics; 2-poly 4-metal CMOS process; 2D infrared focal plane arrays; IR FPA; ROIC; adaptive reset control; readout integrated circuit; size 0.35 mum; two-step background suppression; Arrays; Detectors; Switches;
Conference_Titel :
ASIC (ASICON), 2011 IEEE 9th International Conference on
Conference_Location :
Xiamen
Print_ISBN :
978-1-61284-192-2
Electronic_ISBN :
2162-7541
DOI :
10.1109/ASICON.2011.6157141
