Missing-Code-Occurrence Probability Calibration Technique for DAC Nonlinearity With Supply and Reference Circuit Analysis in a SAR ADC

@article{Wang2018MissingCodeOccurrencePC,
  title={Missing-Code-Occurrence Probability Calibration Technique for DAC Nonlinearity With Supply and Reference Circuit Analysis in a SAR ADC},
  author={Guancheng Wang and Cheng Li and Yan Zhu and Jianyu Zhong and Yan Lu and Chi-Hang Chan and Rui Paulo Martins},
  journal={IEEE Transactions on Circuits and Systems I: Regular Papers},
  year={2018},
  volume={65},
  pages={3707-3719}
}
This paper reports a calibration scheme that can be used to correct the inter-stage gain error in two-stage analog-to-digital converters (ADCs). We measure the static nonlinearity at the raw ADC outputs and compensate it through a feedback path to adjust the gain in the analog domain, which avoids the dynamic range loss in the conventional pure digital calibrations. The proposed scheme detects the error via the missing-code-occurrence probability (MCOP), which is insensitive to the comparator… CONTINUE READING

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