Imaging systems with adjustable amplifier circuitry

An image sensor comprising:

• image pixels arranged in columns and rows;
• column readout circuitry having amplifier circuitry, wherein a given column of image pixels is coupled to the amplifier circuitry via a column line, and the column readout circuitry is configured to read out a low light image signal from a given image pixel in the given column during a first mode of operation and a high light image signal from the given image pixel during a second mode of operation;
• and
• control circuitry configured to control the readout circuitry to provide the amplifier circuitry with a first common mode voltage during the first mode of operation and provide the amplifier circuitry with a second common mode voltage that is greater than the first common mode voltage during the second mode of operation.

An image sensor comprising:

• an image sensor pixel array having an image pixel;
• and
• readout circuitry coupled to the image pixel via a pixel readout path, wherein the readout circuitry comprises:
• first amplifier circuitry having a first input terminal coupled to the pixel readout path via a first switch and having a second input terminal configured to receive a first common mode voltage;
• and
• second amplifier circuitry having a first input terminal coupled to the pixel readout path via a second switch and having a second input terminal configured to receive a second common mode voltage.