随着焦平面探测器像素规模的逐渐增大,对焦平面读出电路的移位寄存器提出了更高的要求。同时焦平面的片外A/D转换器采样速度的选取又受焦平面的读出速度决定。本文阐述了快照模式焦平面探测器中移位寄存器的设计方法,提出了其最高读出速度的量化定义及测试方法,并通过计算机仿真和实验加以验证。 As the pixel size of the Focal Plane Detector gradually increases, higher requirements are placed on the shift register of the readout circuit of the Focal Plane. While the focal plane of the off-chip A / D converter sampling speed selection by the focal plane read speed decision. This paper describes the design method of the shift register in the snapshot mode focal plane detector, proposes the quantitative definition and test method of its highest read speed, and verifies it by computer simulation and experiment.