[PDF][PDF] Multi-gate source-follower for quanta image sensors (QIS)
IIM DESIGN - 2021 - ericfossum.com
IIM DESIGN
2021•ericfossum.comA multi-gate source-follower (MGSF) is introduced to simultaneously reduce 1/f noise and
increase pixel conversion gain. 1/f noise generally deteriorates as the SF size becomes
smaller although the conversion gain benefits from the scaling. The MGSF can alter this
tradeoff and make a low-noise high-conversion-gain QIS achievable. This work paves the
way to further reduce the floating diffusion referred read noise in CMOS image sensors and
QIS.
increase pixel conversion gain. 1/f noise generally deteriorates as the SF size becomes
smaller although the conversion gain benefits from the scaling. The MGSF can alter this
tradeoff and make a low-noise high-conversion-gain QIS achievable. This work paves the
way to further reduce the floating diffusion referred read noise in CMOS image sensors and
QIS.
Abstract
A multi-gate source-follower (MGSF) is introduced to simultaneously reduce 1/f noise and increase pixel conversion gain. 1/f noise generally deteriorates as the SF size becomes smaller although the conversion gain benefits from the scaling. The MGSF can alter this tradeoff and make a low-noise high-conversion-gain QIS achievable. This work paves the way to further reduce the floating diffusion referred read noise in CMOS image sensors and QIS.
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