Carry-chain propagation delay impacts on resolution of FPGA-based TDC

Lei DONG; Jun-Feng YANG; Ke-Zhui SONG

doi:10.13538/j.1001-8042/nst.25.030401

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Carry-chain propagation delay impacts on resolution of FPGA-based TDC

NUCLEAR ELECTRONICS AND INSTRUMENTATION | Updated：2021-01-20

- Carry-chain propagation delay impacts on resolution of FPGA-based TDC
- Nuclear Science and Techniques Vol. 25, Issue 3, Article number: 030401(2014)
- Affiliations：
  
  1.State Key Laboratory of Particle Detection & Electronics, Department of Modern Physics, University of Science and Technology of China, Hefei230026, China
  2.Anhui Key Laboratory of Physical Electronics, Hefei230026, China
- Author bio：
  
  Corresponding author, yangjf@ustc.edu.cn
- Funds：
- DOI：10.13538/j.1001-8042/nst.25.030401
  CLC：
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Lei DONG, Jun-Feng YANG, Ke-Zhui SONG. Carry-chain propagation delay impacts on resolution of FPGA-based TDC. [J]. Nuclear Science and Techniques 25(3):030401(2014)
DOI：

Lei DONG, Jun-Feng YANG, Ke-Zhui SONG. Carry-chain propagation delay impacts on resolution of FPGA-based TDC. [J]. Nuclear Science and Techniques 25(3):030401(2014) DOI： 10.13538/j.1001-8042/nst.25.030401.

摘要

Abstract

The architecture of carry chains in Field-Programmable Gate Array (FPGA) is introduced in this paper. The propagation delay time of the rising and falling edges in the carry chains are calculated according to the architecture and they are predicted not equal in most cases. Tests show that the measuring results of the propagation delay time in EP3C120F484C8N series FPGA of Altera are in line with the inference. The difference of propagation delay time results in different accuracies of Time-to-Digital Converter (TDC). This phenomenon shall be considered in the design of TDC implemented in FPGA. It can ensure better accuracy.

关键词

Keywords

FPGA FirmwareCarry chainsPropagation delay timeTDC

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Related Institution

State Key Laboratory of Particle Detection & Electronics

Anhui Key Laboratory of Physical Electronics, Department of Modern Physics, University of Science and Technology of China

Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China

Shanghai EBIT Lab, Institute of Modern Physics, Fudan University

The Key Lab of Applied Ion Beam Physics, Ministry of Education

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