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A 100-dB gain-corrected delta-sigma audio DAC with headphone driver

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Abstract

An oversampled digital-to-analog converter (DAC) with a 100-dB A-weighted dynamic range is presented. It uses a switched-capacitor (SC) array to transfer the sampled charges directly into the headphone driver. The overall DAC gain is precisely controlled by a novel reference stage. A new dynamic element matching algorithm, based on split-set data-weighted averaging (SDWA), is used to improve the dynamic range and to reduce the nonlinearity caused by mismatches in the multibit DAC.

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Acknowledgements

This project was funded by Samsung Electronics. The authors are grateful to Dr. J. Steensgaard for useful discussions.

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Authors and Affiliations

  1. School of Electrical Engineering and Computer Science, Oregon State University, Corvallis, OR, 97331, USA

    Ruopeng Wang, Un-Ku Moon & Gabor C. Temes

  2. Samsung Electronics, Yongin, Korea

    Sang-Ho Kim, Sang-Hyeon Lee, Seung-Bin You & Jae-Whui Kim

Authors
  1. Ruopeng Wang
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  2. Sang-Ho Kim
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  3. Sang-Hyeon Lee
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  4. Seung-Bin You
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  5. Jae-Whui Kim
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  6. Un-Ku Moon
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  7. Gabor C. Temes
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Corresponding author

Correspondence to Ruopeng Wang.

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Wang, R., Kim, SH., Lee, SH. et al. A 100-dB gain-corrected delta-sigma audio DAC with headphone driver. Analog Integr Circ Sig Process 51, 27–31 (2007). https://doi.org/10.1007/s10470-007-9033-0

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  • DOI: https://doi.org/10.1007/s10470-007-9033-0

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