Design of High Dynamic Range Front-end Readout Circuit Based on MCP Detectors

In order to make full use of the advantages of single photon detection capability of Microchannel plate detectors (MCP), a front-end readout circuit with high dynamic range is designed in this paper. The multiple charge transfer logic, inspired by asynchronous logic successive approximation ADC, is used to extend the dynamic range. The readout circuit mainly includes the dynamic range expansion module, the buffer module, the high-speed comparator module, and the time digital conversion module. It can not only provide ultra-wide input signal dynamic range, but also obtain high-precision time and space resolution.