MODELING NOISE EFFECTS IN TIME-TO-DIGITAL CONVERTERS |
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| Pasquale Napolitano, Antonio Moschitta, Paolo Carbone |
- Abstract:
- In this work, the main sources of error affecting time interval measurements are analyzed and modeled. Time interpolation techniques utilizing both synchronous and asynchronous strategies to perform time measurements have been considered. Jitter on start and stop timing signals, interpolator nonlinearities, quantization error and jitter affecting the system clock driving the counter have been recognized as the main contributors to measurement uncertainty and their effects are analytically described. A deeper investigation on the cumulative effect of the clock jitter is discussed in order to determine mean values, variances and probability density functions of quantizer output and quantization error sequences. Simulations showing mean values and variances of the quantizer output are also presented, in order to validate theoretical results. The obtained model is useful both for design and testing purposes.
- Keywords:
- Time-to-Digital Converter (TDC), uncertainty analysis, error analysis
- Download:
- IMEKO-IWADC-2011-62.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC4
- Event name:
- IWADC 2011
- Title:
16th IMEKO International Workshop on ADC Modeling and Testing - Data Converter Design, Modeling and Testing (together with IEEE ADC Forum) (IWADC)
- Place:
- Orvieto, ITALY
- Time:
- 30 June 2011 - 01 July 2011