Image sensors with reduced peak power

A method of operating an image sensor having image sensor pixels arranged in columns and rows, the method comprising:

• receiving pixel signals from a row of the image sensor pixels at a plurality of readout circuits each coupled to a corresponding column of the image sensor pixels;
• performing readout operations during a row time associated with the row of the image sensor pixels;
• and
• performing time-domain multiplexing for the readout operations across the plurality of readout circuits by activating the plurality of readout circuits at different times across the row time.

An image sensor comprising:

• an image sensor array having first and second pixels arranged in first and second columns, respectively, and arranged in a same row;
• first analog-to-digital converter circuitry coupled to the first pixel using a first column line and configured to begin a first analog-to-digital conversion operation during a row time associated with readout operations for the first and second pixels;
• and
• second analog-to-digital converter circuitry coupled to the second pixel using a second column line and configured to begin a second analog-to-digital conversion operation during the row time, wherein the first analog-to-digital converter circuitry and the second analog-to-digital converter circuitry are switched to an active mode respectively at first and second different times across the row time to begin the first and second analog-to-digital conversion operations.