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

fYear

2005

fDate

23-26 May 2005

Firstpage

572

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on

Print_ISBN

0-7803-8834-8

Type

conf

DOI

10.1109/ISCAS.2005.1464652

Filename

1464652