Patent ID: 9591245
Date: 2017-03-07
CPC Classifications: H04N

Claim:
1. An image sensor pixel, comprising: a photodiode having a first terminal and a second terminal; a source follower transistor having a terminal that is operable to couple to the first terminal of the photodiode, a first terminal coupled to a power supply, and a second terminal; a plurality of transistors coupled to the second terminal of the source follower transistor, wherein at least one of the plurality of transistors has a terminal that is operable to receive a ground power supply voltage; and body bias control circuitry that provides a control voltage to the second terminal of the photodiode that is different than the ground power supply voltage, wherein the body bias control circuitry is configured to bias the control voltage to be different than the ground power supply voltage during a first pixel operation and to bias the control voltage to be equal to the ground power supply voltage during a second pixel operation.