Long-wave photoconductive infrared detector (wavelength over 10 μm) is important to the fields of low-temperature target detection, over-the-horizon detection, and anti-jamming target recognition. The readout integrated circuit of long-wave infrared photoconductive detector cannot adapt because of its low resistance and high non-uniformity. A self-adaptive readout integrated circuit for correction of long-wave infrared photoconductive detector is designed. The circuit adopts a bridge input structure with feedback comparison type ADC and DAC, and then outputs through RTIA amplifier. It can not only effectively readout the signal of the long-wave photoconductive detector with non-uniformity, but also increase the dynamic range of the output signal of the readout integrated circuit. The simulation and test show that the non-uniformity has been improved evidently. The non-uniformity of resistance is reduced to less than 0.5 % equivalently, and the non-uniformity of output signal is reduced from more than 50 % to less than 10 %. The circuit can work properly at normal temperature and low temperature. It has the advantages of low power consumption and low noise. This correction circuit can not only solve the key problems in current projects but also lay an important theoretical foundation for the design and development of the readout integrated circuit of high-performance and large array of long-wave photoconductive infrared detector in the future.

长波光电导红外检测器（波长超过10μm）对于低温目标检测，超视距检测和抗干扰目标识别领域至关重要。长波红外光电导检测器的读出集成电路由于其低电阻和高不均匀性而无法适应。设计了一种用于长波红外光电导检测器校正的自适应读出集成电路。该电路采用具有反馈比较型ADC和DAC的电桥输入结构，然后通过RTIA放大器输出。它不仅可以有效地读出不均匀的长波光电导检测器的信号，而且可以增大读出集成电路输出信号的动态范围。仿真和测试表明，不均匀性得到了明显改善。电阻的不均匀性等效地减小到小于0.5％，输出信号的不均匀性从大于50％减小到小于10％。该电路可以在常温和低温下正常工作。它具有低功耗和低噪声的优点。该校正电路不仅可以解决当前项目中的关键问题，而且为未来高性能大阵列长波光电导红外探测器读出集成电路的设计和开发奠定了重要的理论基础。该电路可以在常温和低温下正常工作。它具有低功耗和低噪声的优点。该校正电路不仅可以解决当前项目中的关键问题，而且为未来高性能大阵列长波光电导红外探测器读出集成电路的设计和开发奠定了重要的理论基础。该电路可以在常温和低温下正常工作。它具有低功耗和低噪声的优点。该校正电路不仅可以解决当前项目中的关键问题，而且为未来高性能大阵列长波光电导红外探测器读出集成电路的设计和开发奠定了重要的理论基础。