Patent ID: 9602750
Date: 2017-03-21
CPC Classifications: H01L,H04N

Claim:
1. An image sensor pixel, comprising: a photodiode that generates charge in response to image light; a floating diffusion node; a charge transfer transistor configured to transfer the generated charge from the photodiode to the floating diffusion node; an amplifying transistor having a drain terminal coupled to a pixel output node, wherein the floating diffusion node is coupled between a drain terminal of the charge transfer transistor and a gate terminal of the amplifying transistor; a feedback capacitor coupled between the pixel output node and the floating diffusion node, wherein the amplifying transistor is configured to provide the transferred charge with a greater than unity gain and the feedback capacitor is configured to provide negative voltage feedback to the floating diffusion node; and a pre-charge capacitor coupled between the floating diffusion node and a pre-charge bus line.