阅读说明：本技术 电流测量设备、分子实体感测设备、测量电流的方法、感测分子实体的方法 (Current measurement device, molecular entity sensing device, method of measuring current, method of sensing molecular entity ) 是由 D·菲施 H·文斯特拉 E·托泰 于 2020-02-04 设计创作，主要内容包括：提供了用于测量电流的方法和设备。在一种布置中,第一电荷放大器对待测电流进行积分。处理电路使用第一低通滤波器模块和第二低通滤波器模块对来自所述第一电荷放大器的输出进行滤波。第二电荷放大器对源自来自所述第一电荷放大器的经滤波输出的电流进行积分。所述设备被配置成在多个感测帧中的每个感测帧开始时对所述第一电荷放大器进行复位。所述处理电路在每个感测帧内获得来自所述第一电荷放大器的所述输出的至少第一样本。对所述第一样本的采样从一个感测帧到下一个感测帧在通过所述第一低通滤波器模块进行的采样与通过所述第二低通滤波器模块进行的采样之间交替。(Methods and apparatus for measuring current are provided. In one arrangement, a first charge amplifier integrates the current to be measured. A processing circuit filters an output from the first charge amplifier using a first low pass filter module and a second low pass filter module. A second charge amplifier integrates current derived from the filtered output from the first charge amplifier. The apparatus is configured to reset the first charge amplifier at the beginning of each of a plurality of sensing frames. The processing circuit obtains at least a first sample from the output of the first charge amplifier within each sense frame. The sampling of the first samples alternates between sampling by the first low pass filter module and sampling by the second low pass filter module from one sensing frame to the next.)