Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published February 2002 | Accepted Version
Journal Article Open

Adaptation of Current Signals with Floating-Gate Circuits


In this paper we present a new, adaptive spatial-derivative circuit for CMOS image sensors. The circuit removes its offset as a natural part of its operation using a combination of electron tunneling and hot-electron injection to add or remove charge on a floating-gate of an auto-zeroing amplifier. We designed, fabricated and successfully tested a chip with the circuit. Test results show that the circuit reduces the offsets by more than an order of magnitude.

Additional Information

© 2002 Kluwer Academic Publishers. Received December 24, 1999; Accepted January 16, 2001. This work was supported by a Learning and Intelligent Systems (LIS) Grant (BES-9720353) from the National Science Foundation (NSF) and by the NSF supported Center for Neuromorphic Systems Engineering at Caltech.

Attached Files

Accepted Version - 141.pdf

Accepted Version - 141.ps


Files (554.4 kB)
Name Size Download all
420.6 kB Download
133.8 kB Preview Download

Additional details

September 22, 2023
October 23, 2023