A 120-dB Dynamic Range CMOS Image Sensor with Programmable Power Responsivity

Author

Stoppa, David ; Simoni, Alexandra ; Baschirotto, A.

Author_Institution

Centro per la Ricerca Scientifica e Tecnologica, Trento

fYear

2006

fDate

19-21 Sept. 2006

Firstpage

420

Lastpage

423

Abstract

A high dynamic range CMOS image sensor providing a user-programmable power responsivity curve is presented. Each 15 times 15mum²-pixel cell integrates, besides a 4T active pixel structure, a voltage comparator and an analog memory to implement a time-to-saturation scheme while also providing the standard integrated photo-current signal. A 140 times l40-pixel array has been fabricated in a 0.35-mum, 3.3-V standard CMOS technology. The sensor features a typical dynamic range of 120 dB with a temporal noise lower than 0.13% and a fixed pattern noise of 0.4% (1.7%) at low (high) irradiance

Keywords

CMOS image sensors; comparators (circuits); 0.35 micron; 3.3 V; CMOS active pixel; CMOS image sensor; analog memory; digital cameras; fixed pattern noise; programmable power responsivity; standard integrated photo-current signal; temporal noise; time-to-saturation scheme; video camera; voltage comparator; CMOS image sensors; CMOS technology; Dynamic range; Image coding; Image sensors; Lighting; Photoconductivity; Pixel; Switches; Voltage; CMOS active pixel; digital cameras; image sensor; video camera; wide dynamic range;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Circuits Conference, 2006. ESSCIRC 2006. Proceedings of the 32nd European

Conference_Location

Montreux

ISSN

1930-8833

Print_ISBN

1-4244-0303-0

Type

conf

DOI

10.1109/ESSCIR.2006.307470

Filename

4099793