A high-speed low nonlinearity FPGA-based time-to-digital converter for ToF imaging

Yuanyuan Hua; Hanning Mai; Fahimeh Dehkhoda; Yangchun Li; Robert Henderson; Danial Chitnis

doi:10.1117/12.2584839

4 October 2020 A high-speed low nonlinearity FPGA-based time-to-digital converter for ToF imaging

Yuanyuan Hua, Hanning Mai, Fahimeh Dehkhoda, Yangchun Li, Robert Henderson, Danial Chitnis

Proceedings Volume 11579, Quantum Photonics: Enabling Technologies; 115790H (2020) https://doi.org/10.1117/12.2584839
Event: SPIE Photonex and Vacuum Expo, 2020, Online Only

Conference Poster

Abstract

Time-to-digital converter (TDC) is a major component for the measurement of time intervals. Recent developments in field-programmable gate array (FPGA) have enabled the opportunity to implement high performance TDC which previously was only possible in dedicated hardware. We propose a TDC with cascaded carry chains, a customized encoder, a highly efficient histogram generator. It’s implemented on a 16nm FPGA while utilizing a Gigabit Ethernet for data transmission. Comparisons with previous works show the proposed TDC has lower resource utilization whilst achieving a better raw linearity which enables the path to high performance multichannel TDCs in demanding time-of-flight (ToF) imaging application.

Conference Presentation

Citation Download Citation

Yuanyuan Hua, Hanning Mai, Fahimeh Dehkhoda, Yangchun Li, Robert Henderson, and Danial Chitnis "A high-speed low nonlinearity FPGA-based time-to-digital converter for ToF imaging", Proc. SPIE 11579, Quantum Photonics: Enabling Technologies, 115790H (4 October 2020); https://doi.org/10.1117/12.2584839

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