【摘要】 为提高光电探测器的读出性能,设计的电容互阻放大器(CTIA)注入效率大于99%,线性度达99.84%。相关双采样电路(CDS)采用不同控制时序,读出电路可以工作在噪声抑制模式和两次采样模式。噪声抑制模式时读出电路平均噪声为0.91 mV,动态范围为66.85 dB,两次采样模式平均噪声为5.82 mV,动态范围扩展到90.82 dB。更多还原

【Abstract】 To improve photodetector read out performance,the inject efficiency of the designed capacitance transimpedance amplifier(CTIA) is better than 99% and linearity reaches 99.84%.Correlated double sampling circuit(CDS) adopts different control timings,the readout circuit can operate in noise suppressing mode,the or dual sampling mode.Under noise suppressing mode,the average noise of the readout circuit is 0.91 mV and dynamic range is 66.85 dB.In dual sampling mode average noise is 5.82 mV and dynamic range extended to 90.82 dB.更多还原