Described herein is an electronic device that includes a first integrated circuit die having formed therein at least one photodiode and readout circuitry to convert charge generated by the at least one photodiode to a read voltage and to selectively output the read voltage. A second integrated circuit die is in a stacked arrangement with the first integrated circuit die and has formed therein storage circuitry to selectively transfer the read voltage to at least one storage capacitor for storage as a stored voltage and to selectively transfer the stored voltage to an output. The at least one storage capacitor is formed from a capacitive deep trench isolation. There is an interconnect between the first and second integrated circuit dies for coupling the readout circuitry to the storage circuitry.