A novel CMOS current-mediated imager (CMI) is presented with high output linearity. In the proposed structure, the pixel oper ates in triode region , instead of operating in saturation region for conventional currentmediated imagers . As a consequence, the output current is a linear function of the photocurrent at the sensing node. Such a linear feature reduces the DC current consumption by more than a factor of 10 for high linearity applications. Additionally, the corresponding current source /mirror circuit is also presented, aiming to further minimize the linearity distortion caused by the Vds variation.
|Title of host publication||2009 1st Asia Symposium on Quality Electronic Design, ASQED 2009|
|Number of pages||4|
|Publication status||Published - 2009|
|Event||2009 1st Asia Symposium on Quality Electronic Design, ASQED 2009 - Kuala Lumpur, Malaysia|
Duration: 15 Jul 2009 → 16 Jul 2009
|Other||2009 1st Asia Symposium on Quality Electronic Design, ASQED 2009|
|Period||15/7/09 → 16/7/09|
- Current-mediated imager
- Low power CMOS imager.
ASJC Scopus subject areas
- Hardware and Architecture
- Electrical and Electronic Engineering