By Topic

Sigma-delta A/D converter for CMOS image sensors

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Silva, P.M. ; Dept. Ind. Electron., Univ. of Minho, Guimaraes, Portugal ; Correia, V. ; Lanceros Mendez, S. ; Rocha, J.G.

This paper describes the per-pixel readout circuit of an imaging matrix and compares it with other solutions. The per-pixel readout circuit consists in a digital pixel sensor array constituted by a photodiode and a one-bit first-order sigma-delta analog to digital converter for each pixel. The output of each pixel is a digital bit stream, containing information about the intensity of the light that falls into its photodiode. The sigma-delta A/D converters use only ten small size MOSFETs and one capacitor. The comparison between the solution presented here and other solutions show that the circuit complexity is similar but the performance, in terms of signal to noise ratio, is superior.

Published in:

Microelectronics (ICM), 2009 International Conference on

Date of Conference:

19-22 Dec. 2009