Inverter-based low-power infrared readout circuit and control method

Abstract

The application relates to the field of infrared imaging technology, in particular to a low-power infrared readout circuit based on an inverter and a control method, which comprises a capacitor transimpedance amplifier based on an inverter, a correlated double sampling circuit based on an inverter and an analog-to-digital converter; the capacitor transimpedance amplifier based on the inverter comprises first to fourth transistors, a first capacitor and a first diode; the correlated double sampling circuit based on the inverter comprises a first sampling switch, a second sampling switch, a second capacitor, a third capacitor and a differential amplifier based on the inverter; thus, by adopting the capacitor transimpedance amplifier based on the inverter and the double sampling circuit structure, the current multiplexing characteristics of the inverter are utilized, the problem that the infrared readout circuit in the related art has high power consumption and is difficult to be deployed in an edge end low-power scene is solved, and the circuit power consumption is significantly reduced.

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