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Time-to-Digital Converter With 2.1-ps RMS Single-Shot Precision and Subpicosecond Long-Term and Temperature Stability.

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Title: Time-to-Digital Converter With 2.1-ps RMS Single-Shot Precision and Subpicosecond Long-Term and Temperature Stability.
Authors: Vyhlidal, David1, Cech, Miroslav1
Source: IEEE Transactions on Instrumentation & Measurement. Feb2016, Vol. 65 Issue 2, p328-335. 8p.
Subjects: Time-digital conversion, Digital counters, Time measurements, Laser ranging, Optical radar, Interpolation
Abstract: This paper presents the design and performance measurement results of a prototype time-to-digital converter (TDC) implemented using commercially available components. The TDC is based on an interpolation principle. In this principle, the time interval is first roughly digitized by a coarse counter driven by a high-stability reference clock, and the fractions between the clock periods are measured by two high-resolution interpolators based on the time-to-amplitude conversion method. This principle ensures theoretically unlimited measurement range with fine time resolution. The TDC achieves 2.1-ps rms time interval measurement precision with a resolution of 0.17 ps and the maximum measurement rate of 200 Hz. The estimated single-channel precision is 1.5-ps rms. A unique circuit structure was developed to allow individual channel calibration after each event. During the calibration, a value corresponding to one reference clock period is obtained. This gives the TDC an outstanding long-term stability of 110 fs peak–peak and a long-term drift of 0.2 fs/h over a 24-h interval. The calibration also helps to obtain a high temperature stability of 0.2 ps/°C. The power consumption is 10 W. The circuit structure allows for programmable customization of the TDC to satisfy many potential applications in time-of-flight systems, such as laser range finding or event counting. [ABSTRACT FROM AUTHOR]
Copyright of IEEE Transactions on Instrumentation & Measurement is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 112077494
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  Data: Time-to-Digital Converter With 2.1-ps RMS Single-Shot Precision and Subpicosecond Long-Term and Temperature Stability.
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  Data: <searchLink fieldCode="DE" term="%22Time-digital+conversion%22">Time-digital conversion</searchLink><br /><searchLink fieldCode="DE" term="%22Digital+counters%22">Digital counters</searchLink><br /><searchLink fieldCode="DE" term="%22Time+measurements%22">Time measurements</searchLink><br /><searchLink fieldCode="DE" term="%22Laser+ranging%22">Laser ranging</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+radar%22">Optical radar</searchLink><br /><searchLink fieldCode="DE" term="%22Interpolation%22">Interpolation</searchLink>
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  Data: This paper presents the design and performance measurement results of a prototype time-to-digital converter (TDC) implemented using commercially available components. The TDC is based on an interpolation principle. In this principle, the time interval is first roughly digitized by a coarse counter driven by a high-stability reference clock, and the fractions between the clock periods are measured by two high-resolution interpolators based on the time-to-amplitude conversion method. This principle ensures theoretically unlimited measurement range with fine time resolution. The TDC achieves 2.1-ps rms time interval measurement precision with a resolution of 0.17 ps and the maximum measurement rate of 200 Hz. The estimated single-channel precision is 1.5-ps rms. A unique circuit structure was developed to allow individual channel calibration after each event. During the calibration, a value corresponding to one reference clock period is obtained. This gives the TDC an outstanding long-term stability of 110 fs peak–peak and a long-term drift of 0.2 fs/h over a 24-h interval. The calibration also helps to obtain a high temperature stability of 0.2 ps/°C. The power consumption is 10 W. The circuit structure allows for programmable customization of the TDC to satisfy many potential applications in time-of-flight systems, such as laser range finding or event counting. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of IEEE Transactions on Instrumentation & Measurement is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1109/TIM.2015.2490418
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        Text: English
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      – SubjectFull: Time-digital conversion
        Type: general
      – SubjectFull: Digital counters
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      – SubjectFull: Time measurements
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      – SubjectFull: Laser ranging
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      – SubjectFull: Optical radar
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      – SubjectFull: Interpolation
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      – TitleFull: Time-to-Digital Converter With 2.1-ps RMS Single-Shot Precision and Subpicosecond Long-Term and Temperature Stability.
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              Text: Feb2016
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