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Studying Cavitation Enhanced Therapy
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Note: All-digital pulse-shrinking time-to-digital converter with improved dynamic range.

Chun-Chi Chen1, Chorng-Sii Hwang2, Yi Lin1

  • 1Department of Electronic Engineering, National Kaohsiung First University of Science and Technology, Kaohsiung City 811, Taiwan.

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Summary

This study introduces an all-digital pulse-shrinking time-to-digital converter (TDC) with offset error cancellation. This innovation enhances accuracy and widens the dynamic range of the TDC for improved performance.

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Area of Science:

  • Digital electronics
  • Integrated circuit design
  • Signal processing

Background:

  • Time-to-digital converters (TDCs) are crucial for precise timing measurements.
  • Pulse-shrinking TDCs offer sub-gate resolution with reduced complexity.
  • Existing pulse-shrinking TDCs suffer from offset errors, limiting dynamic range and accuracy.

Purpose of the Study:

  • To propose an all-digital pulse-shrinking TDC with offset error cancellation.
  • To enhance the dynamic range and accuracy of TDCs.
  • To address the limitations of conventional pulse-shrinking TDC designs.

Main Methods:

  • Implementation of an all-digital pulse-shrinking TDC architecture.
  • Integration of a novel offset error cancellation circuitry.
  • Utilizing a time adder and a time subtractor, each with an identical delay line.
  • Experimental validation on Xilinx field programmable gate arrays (FPGAs).

Main Results:

  • Successful implementation and functioning of the proposed TDC.
  • Demonstrated improvement in the dynamic range of the TDC.
  • Effective cancellation of undesired offset errors.
  • Achieved enhanced accuracy in time-to-digital conversion.

Conclusions:

  • The proposed offset error cancellation circuitry effectively enhances TDC performance.
  • The all-digital pulse-shrinking TDC offers a viable solution for accurate timing measurements.
  • The design successfully widens the dynamic range and improves accuracy, overcoming previous limitations.