高灵敏度量子点-量子阱光电探测器的大动态范围读出设计

摘要

针对高灵敏度量子点-量子阱光电器件宽动态的光电响应特性,进行大的动态范围读出设计,对比分析了不同积分电容的CTIA读出结构的测试结果,设计一款低噪声增益自动可调放大器的读出结构,使输出动态范围扩展了26dB,,获得较好的读出信噪比.%Focused on high sensitivity property of the optoelectronic devices with quantum dots in quantum well, wide dynamic range readout circuits were designed. Test results of the Capacitive Trans-Impedance Amplifier (CTIA) structure with different integration capacitances were compared. A low noise amplifier readout structure whose gain can be automatically adjusted is designed. The output dynamic range can be extended by 26 dB, which can achieve high signal to noise ratio.