Low power CMOS image sensors employing adaptive bulk biasing control (AB2C) approach

Alexander Fish, Tomer Rothschild, Avichay Hodes, Yonatan Shoshan, Orly Yadid-Pecht

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations


A low power CMOS image sensor employing Adaptive Bulk Biasing Control (AB2C) approach is presented. The AB2C is a novel method that utilizes self adaptive biasing of the sensor array and digital periphery and allows sensor power reduction and image performance improvement. The presented AB2C technique can be easily implemented in a standard twin well or triple well CMOS technology. Both rolling shutter and global shutter imagers were examined using the AB2C, showing increased sensor output voltage swing, reduced in-pixel leakage currents, increased shutter efficiency and significant improvement in power dissipation of the scanning circuitry. A detailed description and analysis of the AB2C method is presented. Various image sensors employing AB2C have been implemented in a standard 0.18μm CMOS technology available through MOSIS and are operated via a 1.8V supply. Imagers operation is discussed and simulation results are reported.

Original languageEnglish
Article number4253268
Pages (from-to)2834-2837
Number of pages4
JournalProceedings - IEEE International Symposium on Circuits and Systems
StatePublished - 2007
Externally publishedYes
Event2007 IEEE International Symposium on Circuits and Systems, ISCAS 2007 - New Orleans, LA, United States
Duration: 27 May 200730 May 2007


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