IMAGE SENSOR ADAPTIVE COLUMN READOUT STRUCTURE

摘要

A pixel array readout structure is provided. The structure includes first partial amplifier circuitry and a switch fabric electrically connected to the first partial amplifier circuitry. A column of pixels in an array includes a first group of pixels, each pixel having an output transistor connected in a first parallel configuration with the switch fabric, and a second group of pixels, each pixel having an output transistor connected in a second parallel configuration with the switch fabric. A switch fabric control is configured to selectively configure the switch fabric into a plurality of connection states, including (a) a first state connecting the first parallel configuration to the first partial amplifier circuitry without connecting the second parallel configuration, and (b) a second state connecting the second parallel configuration to the first partial amplifier circuit without connecting the first parallel configuration.