Title :
A 0.18μm CMOS 1000 frames/sec, 138dB Dynamic Range Readout Circuit for 3D-IC IR Focal Plane Arrays
Author :
Kavusi, Sam ; Ghosh, Kunal ; Fife, Keith ; El Gamal, Abbas
Author_Institution :
Dept. of Electr. Eng., Stanford Univ., CA
Abstract :
A prototype of a new high dynamic range readout scheme targeted for 3D-IC IR focal plane arrays is described. Dynamic range is extended using synchronous self-reset while high SNR is maintained using few non-uniformly spaced captures and least-squares fit to estimate pixel photocurrent. The prototype comprises of a 16times5 readout pixel array fabricated in a 0.18μmum CMOS process and achieves 138dB dynamic range and 60dB peak SNR at 1000 frames/sec with energy consumption of 25.5nJ per pixel readout.
Keywords :
CMOS image sensors; focal planes; readout electronics; 0.18 micron; 3D-IC IR focal plane arrays; CMOS; least-squares fit; nonuniformly spaced captures; pixel photocurrent; readout circuit; synchronous self-reset; CMOS technology; Counting circuits; Dynamic range; Energy consumption; Layout; Optical imaging; Photoconductivity; Pixel; Prototypes; Three-dimensional integrated circuits;
Conference_Titel :
Custom Integrated Circuits Conference, 2006. CICC '06. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
1-4244-0075-9
Electronic_ISBN :
1-4244-0076-7
DOI :
10.1109/CICC.2006.320944
