Image sensor

An image sensor comprising a plurality of pixels arranged in a plurality of rows and a plurality of columns, each of the plurality of pixels comprising:

• a photodiode;
• a floating diffusion node configured to accumulate photocharges generated by the photodiode;
• a first capacitor configured to store charges according to a voltage of the floating diffusion node which is reset;
• a second capacitor configured to store charges according to a voltage of the floating diffusion node in which the photocharges are accumulated;
• a first sampling transistor connected to an output node and configured to sample charges to the first capacitor;
• a second sampling transistor connected to the output node and configured to sample charges to the second capacitor;
• a first source follower configured to amplify the voltage of the floating diffusion node and output the amplified voltage;
• a first precharge select transistor;
• and
• a second precharge select transistor,
• wherein the first precharge select transistor, the second precharge select transistor, and the first source follower are connected in series.