▎ 摘　　要

NOVELTY - The circuit has a main portion which is provided with a bias module, an integration module, a voltage comparison module, and a switch selection module. The bias module is provided to provide the static operating point bias voltage to the integration module, and the photoelectric signal generated by the graphene photodetector is injected into the integration module. The integration module is provided to process the current signal generated by the graphene photodetector, and convert the current signal into a voltage signal. The voltage comparison module is provided to compare the output voltage from the integration module with the threshold voltage. The switch selection module is provided to select different integration capacitors according to the output of the voltage comparison module. USE - Large dynamic range readout circuit for graphene photodetector used in military and civil fields. ADVANTAGE - The detector selects different integrating capacitors according to size of light current generated in the detector, thus improving detecting speed and dynamic graphene photodetector of micro-light, and reducing noise of the circuit. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a large dynamic range readout circuit method for graphene photodetectors. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the large dynamic range readout circuit for graphene photodetector. (Drawing includes non-English language text)