CMOS active pixel image sensor with in-pixel CDS for high-speed cameras

Toru Inoue; Shinji Takeuchi; Shoji Kawahito

doi:10.1117/12.533598

7 June 2004 CMOS active pixel image sensor with in-pixel CDS for high-speed cameras

Toru Inoue, Shinji Takeuchi, Shoji Kawahito

Proceedings Volume 5301, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications V; (2004) https://doi.org/10.1117/12.533598
Event: Electronic Imaging 2004, 2004, San Jose, California, United States

Abstract

This paper presents a high-speed CMOS image sensor of whose frame rate exceeds 2000 frames/s. The pixel includes a photodiode, a charge-transfer amplifier, and circuitry for correlated double sampling (CDS) and global electronic shuttering. Reset noise, which is a major random noise factor, is greatly reduced by the CDS combined with the charge-transfer amplifier. The total number of devices in the pixel is 11 transistors and 2 MOS capacitors. Test circuits were fabricated using a 0.25μm CMOS process. The sensitivity of the 20 x 20μm² pixel using the floating diffusion capacitor of 6.2fF and the photodiode area of 15 x 12.7μm² is 34V/lux-sec. At 1000frames/sec, noise level is 2.43mV_rms (dark). The noise level and the sensitivity are greatly improved compared with a 3Tr. type APS implemented with the same technology and a previous version of the APS with in-pixel CDS.

Citation Download Citation

Toru Inoue, Shinji Takeuchi, and Shoji Kawahito "CMOS active pixel image sensor with in-pixel CDS for high-speed cameras", Proc. SPIE 5301, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications V, (7 June 2004); https://doi.org/10.1117/12.533598

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available