On-chop processing for the wave union TDC implemented in FPGA

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The wave union TDC implemented in FPGA utilizes multiple measurement method to reach time resolution beyond the natural carry cell delay in FPGA. Lacking of analog compensation for bin width control available in ASIC, the wave union TDC takes the after-fact digital calibration approach. In addition to the temperature drift, non-uniformity of the carry chain structure in FPGA causes complicate differential nonlinearity pattern which imposes significant on-chip calibration challenge. In this paper, processing strategies for the wave union TDC are discussed. Actual implementations in low-cost FPGA with 20ps and 10ps RMS resolutions are also presented.

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4 pages

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Wu, Jinyan May 1, 2009.

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The wave union TDC implemented in FPGA utilizes multiple measurement method to reach time resolution beyond the natural carry cell delay in FPGA. Lacking of analog compensation for bin width control available in ASIC, the wave union TDC takes the after-fact digital calibration approach. In addition to the temperature drift, non-uniformity of the carry chain structure in FPGA causes complicate differential nonlinearity pattern which imposes significant on-chip calibration challenge. In this paper, processing strategies for the wave union TDC are discussed. Actual implementations in low-cost FPGA with 20ps and 10ps RMS resolutions are also presented.

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4 pages

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  • Report No.: FERMILAB-CONF-09-275-E
  • Grant Number: AC02-07CH11359
  • Office of Scientific & Technical Information Report Number: 981871
  • Archival Resource Key: ark:/67531/metadc1013940

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Office of Scientific & Technical Information Technical Reports

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  • May 1, 2009

Added to The UNT Digital Library

  • Oct. 14, 2017, 8:36 a.m.

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  • Nov. 3, 2017, 9:25 p.m.

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Wu, Jinyan. On-chop processing for the wave union TDC implemented in FPGA, article, May 1, 2009; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc1013940/: accessed November 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.