Share Email Print

Proceedings Paper

Low-light-level image sensor with on-chip signal processing
Author(s): Sunetra K. Mendis; Bedabrata Pain; Robert H. Nixon; Eric R. Fossum
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The design of a low-light-level CMOS active-pixel-sensor (APS) with on-chip, semi-parallel analog-to-digital (A/D) conversion is presented. The imager consists of a 128 X 128 array of active pixels at a 50 micrometers pitch. Each column of pixels shares a 10-bit A/D converter based on first-order oversampled sigma-delta ((Sigma) -(Delta) ) modulation. The 10-bit outputs of each converter are multiplexed and read out through a single set of outputs. A semi-parallel architecture is chosen to achieve 30 frames/second operation even at low light levels. The sensor is designed for less than 10 e- rms noise performance. A 28 X 28 active-pixel-sensor (APS) with 40 X 40 micrometers 2 pixels as well as individual elements of the sigma-delta modulator have been fabricated and tested using MOSIS* 2 micrometers CMOS technology.

Paper Details

Date Published: 15 November 1993
PDF: 11 pages
Proc. SPIE 1952, Surveillance Technologies and Imaging Components, (15 November 1993); doi: 10.1117/12.161419
Show Author Affiliations
Sunetra K. Mendis, Jet Propulsion Lab. (United States)
Bedabrata Pain, Jet Propulsion Lab. (United States)
Robert H. Nixon, Jet Propulsion Lab. (United States)
Eric R. Fossum, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 1952:
Surveillance Technologies and Imaging Components
Sankaran Gowrinathan; C. Bruce Johnson; James F. Shanley, Editor(s)

© SPIE. Terms of Use
Back to Top