Pixels (FIG. 2) are disclosed, which are coupled between a system voltage (Vdiode) and a pump voltage source (212) and have an integrated capacitor (115) with a first side and a second side. including. The pixel is an integrated capacitor by storing the charge from the photocurrent source (110) in the integrated capacitor, reading the integrated capacitor, and connecting the integrated capacitor to the column line (118) via a selection transistor (125). After the step of resetting, the step of setting the pump voltage source (212) to the system voltage during the reset, and after the reset, the pump voltage is set to ground and the integrated capacitor (115) and column line (118) By the step of generating a negative voltage in between, it can be operated to have a large well.
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