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- W3030743685 abstract "Time-to-digital converters (TDCs) and time correlated single photon counters (TCSPC) are instruments commonly used in LiDAR systems, quantum optics experiments and many other applications. This work presents a new time-to-digital converter architecture to improve dead time, converter linearity and precision. The priority encoder is a large combinatorial logic circuit and is often the bottleneck in field programmable gate array (FPGA) TDC designs, as the conversion must complete within the TDC’s clock period. This work utilizes a new dual clock domain architecture which has allowed for the TDC clock rate to increase by 38.1% from previous work and potentially double for more modern FPGA devices. This reduces the required delay line length and allows for more precise and linear converters as both integral non-linearity and measurement uncertainty scale according to the square root of the number of delay elements used in the delay line. Single shot precision has improved by 12.9% and converter differential non-linearity and integral non-linearity has reduced by 1.27 and 1.57 least significant bits respectively. This work demonstrates a significant improvement to the performance of FPGA based TDCs at the expense of using slightly more block random access memory." @default.
- W3030743685 created "2020-06-05" @default.
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- W3030743685 date "2020-05-26" @default.
- W3030743685 modified "2023-09-26" @default.
- W3030743685 title "Improved FPGA time-to-digital converter architecture to improve precision, converter linearity and reduce dead-time" @default.
- W3030743685 doi "https://doi.org/10.1117/12.2558476" @default.
- W3030743685 hasPublicationYear "2020" @default.
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