Title :
Design of electro-optical demodulating pixel in CMOS technology
Author :
De Nisi, F. ; Stoppa, D. ; Scandiuzzo, M. ; Gonzo, L. ; Pancheri, L. ; Betta, Gian-Franco Dalla
Author_Institution :
Centre for Sci. & Technol. Res., Povo, Italy
Abstract :
We report on the design of an innovative CMOS demodulating pixel architecture conceived for distance measurements according to a continuous wave phase modulation time-of-flight technique. An electro-optical mixer (EOM) photo-detector, based on two closely spaced p-n junctions, has been integrated together with dedicated read out electronics in a 500×25 μm2 pixel. To validate the approach a 128-pixel linear array has been designed and fabricated in 0.35 μm, 3.3 V, 4M-2P, CMOS technology.
Keywords :
CMOS image sensors; demodulation; distance measurement; electro-optical devices; integrated circuit design; mixers (circuits); p-n junctions; phase modulation; photodetectors; 0.35 micron; 25 micron; 3.3 V; 500 micron; CMOS demodulating pixel architecture; continuous wave phase modulation time-of-flight technique; dedicated read out electronics; distance measurements; electro-optical demodulating pixel; electro-optical mixer photo-detector; linear array design; p-n junctions; Amplitude modulation; CMOS technology; Delay; Frequency modulation; Light sources; Low pass filters; Optical modulation; P-n junctions; Phase modulation; Space technology;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1464652
