Patent ID: 8310578

Claim:
An image sensor, comprising: a pixel array comprising a plurality of pixels arranged in a plurality of rows and a plurality of columns; a plurality of column readout lines, each column readout line of the plurality of column readout lines connected to a corresponding at least two pixels of the plurality of pixels; and a plurality of column readout circuits, each column readout circuit of the plurality of column readout circuits connected to a corresponding column readout line of the plurality of column readout lines and comprising: an amplifier; a first capacitor having a first terminal and a second terminal that are both connected in a first selectable path from the corresponding column readout line to an input of the amplifier; a second capacitor having a first terminal and a second terminal that are both connected in a second selectable path from the corresponding column readout line to the input of the amplifier; a first switch connected between the corresponding column readout line and the first terminal of the first capacitor; and a second switch connected between the corresponding column readout line and the first terminal of the second capacitor.