Abstract:The FPGA-TDC has a shorter development cycle and more flexible development methods. With the increasing research on TDC, various FPGA-TDC architectures applied to different scenarios have also emerged. However, there is no unified standard for the classification and naming of these architectures. This article adopts a classification method based on resolution sources to classify the achievements of domestic and foreign research institutions on FPGA-TDC in recent years, summarizes the technical methods in this field, summarizes the advantages and disadvantages of various architectures, and makes prospects for the future development of FPGA-TDC.