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A 99.77% energy-reduced asymmetric capacitance switching scheme for SAR ADC with split-capacitor method

  • Jian Liu
  • Shubin Liu
  • Ruixue Ding
  • Zhangming Zhu
Mixed Signal Letter
  • 104 Downloads

Abstract

A highly energy-efficient, highly area-efficient asymmetric capacitance switching scheme for successive approximation register (SAR) analog-to-digital converters (ADC) is presented. Based on the monotonic switching procedure and asymmetric capacitance array, the novel architecture achieves 97.65% reduction in capacitor area over the conventional SAR ADC. Besides, with the split-capacitor method and most significant bit split switching procedure, the proposed switching scheme achieves 99.77% less switching energy compared with the conventional switching method.

Keywords

SAR ADC Energy efficiency Area efficiency Switching scheme Spilt-capacitor method Asymmetrical capacitance array 

Notes

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Nos. 61674118, 61625403), National Science and Technology Major Project of China (No. 2016ZX03002007).

References

  1. 1.
    Ginsburg, B. P., & Chandrakasan, A. P. (2005). An energy-efficient charge recycling approach for a SAR converter with capacitive DAC. In IEEE international symposium on circuits and systems, 2005. ISCAS 2005 (pp. 184–187). IEEE.Google Scholar
  2. 2.
    Liu, C.-C., Chang, S.-J., Huang, G.-Y., & Lin, Y.-Z. (2010). A 10-bit 50-ms/s SAR ADC with a monotonic capacitor switching procedure. IEEE Journal of Solid-State Circuits, 45(4), 731–740.CrossRefGoogle Scholar
  3. 3.
    Zhang, H. S., Zhang, H., & Zhang, R. Z. (2017). Energy-efficient higher-side-reset-and-set switching scheme for SAR ADC. Electronics Letters, 53(18), 1238–1240.CrossRefGoogle Scholar
  4. 4.
    Rahimi, E., & Yavari, M. (2014). Energy-efficient high-accuracy switching method for SAR ADCs. Electronics Letters, 50(7), 499–501.CrossRefGoogle Scholar
  5. 5.
    Zhu, Z. M., Xiao, Y., & Song, X. L. (2013). Vcm-based monotonic capacitor switching scheme for SAR ADC. Electronics Letters, 49(5), 327–329.CrossRefGoogle Scholar
  6. 6.
    Sanyal, A., & Sun, N. (2013). SAR ADC architecture with 98% reduction in switching energy over conventional scheme. Electronics Letters, 49(4), 248–250.CrossRefGoogle Scholar
  7. 7.
    Liang, H. Z., Ding, R. X., Liu, S. B., & Zhu, Z. M. (2017). Energy-efficient and area-efficient asymmetric capacitor switching scheme for SAR ADCs. Journal of Circuits, Systems and Computers, 27(7), 1850109.CrossRefGoogle Scholar
  8. 8.
    Ghanavati, B., Abiri, E., Salehi, M.-R., Keyhani, A., & Sanyal, A. (2017). LSB split capacitor SAR ADC with 99.2% switching energy reduction. Analog Integrated Circuits and Signal Processing, 93(2), 375–382.CrossRefGoogle Scholar
  9. 9.
    Xie, L. B., Nie, W., Xiong, L., & Su, J. (2017). Energy-efficient capacitor-swapping reset scheme with MSB-split DAC for SAR ADCs. Electronics Letters, 53(7), 458–459.CrossRefGoogle Scholar
  10. 10.
    ZhangYL, Bonizzoni E., & Maloberti, F. (2016). Energy-efficient switching method for SAR ADCs with bottom plate sampling. Electronics Letters, 52(9), 690–692.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Jian Liu
    • 1
  • Shubin Liu
    • 1
  • Ruixue Ding
    • 1
  • Zhangming Zhu
    • 1
  1. 1.School of MicroelectronicsXidian UniversityXi’anPeople’s Republic of China

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