Linear current mode imager with low fix pattern noise
Gruev, V.; Etienne-Cummings, R.; Horiuchi, T.
Circuits and Systems, 2004. ISCAS apos;04. Proceedings of the 2004 International Symposium on
Volume 4, Issue , 23-26 May 2004 Page(s): IV - 860-3 Vol.4
Digital Object Identifier  
Summary:A new imaging architecture with a linear current mode active pixel sensor (APS) is presented. Focal plane image processing in the current domain includes a correlated double sampling (CDS) unit for fixed pattern noise (FPN) suppression. The CDS unit is composed of a first generation current conveyer circuit and a class AB cascaded current memory cell. A measured FPN of 0.9% from saturation level is achieved with the CDS unit compared to 1.9% FPN from current mode images without noise suppression circuitry. A 40 by 40 imaging array was fabricated in a standard 0.5 μm process and its functionality was successfully tested. Theoretical analysis for second order non-linear effects is also presented.

» View citation and abstract

Log in by entering your IEEE Web Account Username and Password.

IEEE Communications Society members: If you subscribe to the IEEE Electronic Periodicals Package or IEEE Electronic Periodicals Package Plus, you must access your subscription at www.comsoc.org.

Check with your librarian, information professional, or system manager to determine if you need to log in. Please complete the online Technical Support Form if you need assistance.

Select the Purchase History link to access the document. You will have 5 Days after purchase to access the Full Text PDF. Please complete the online Technical Support Form if you need assistance.

• Search and access Abstract records free of charge
• Register for table of contents alerts
• Purchase Full Text PDF documents

» Learn more about subscription options or how to become an IEEE Member.