论文标题
具有双向编码器的高分辨率到数字转换器（TDC）
High-resolution time-to-digital converters (TDCs) with a bidirectional encoder
论文作者
论文摘要
提出并在16 nm Xilinx Ultrascale+现场可编程的门阵列（FPGA）中实现了基于波浪联合（四个边缘WU A），双重采样和子TDL方法的高分辨率到数字转换器（TDC）。我们将WU和双抽样技术结合在一起，以实现高分辨率。此外，我们使用子-TDL方法和提出的双向编码器来抑制气泡并有效地编码四个转变伪温度计代码。实验结果表明，在最佳情况下，提出的TDC以450MHz采样时钟和3.06 PS RMS的精度达到了0.4 PS分辨率。这些特征使该设计适用于粒子物理学，生物医学成像（例如正电子发射断层扫描，PET）和通用科学仪器。
A high-resolution time-to-digital converter (TDC) based on wave union (four-edge WU A), dual-sampling, and sub-TDL methods is proposed and implemented in a 16-nm Xilinx UltraScale+ field-programmable gate array (FPGA). We combine WU and dual-sampling techniques to achieve a high resolution. Besides, we use the sub-TDL method and the proposed bidirectional encoder to suppress bubbles and encode four-transition pseudo thermometer codes efficiently. Experimental results indicate the proposed TDC achieves a 0.4 ps resolution with a 450MHz sampling clock and a 3.06 ps RMS precision in the best-case scenario. These characteristics make this design suitable for particle physics, biomedical imaging (such as positron emission tomography, PET), and general-purpose scientific instruments.
