Range pre-selection sampling technique to reduce input drive energy for SAR ADCs

Harijot Singh Bindra, Joeri Boris Lechevallier, Anne Johan Annema, S.M. Louwsma, Adrianus Johannes Maria van Tuijl, Bram Nauta

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    2 Citations (Scopus)
    135 Downloads (Pure)

    Abstract

    A Range Pre-selection Sampling (RPS) technique is introduced to reduce the input drive energy for SAR ADCs and is applied to a 10-bit 2MS/s SAR ADC in 65nm CMOS in this paper. Using the proposed RPS technique, the peak input sampling current and hence the input drive power requirement is reduced by a factor 2.4 as compared to conventional sampling (CS). Considering an ideal Class A operation for the buffer circuit driving the ADC, this translates into a minimum (theoretical) driver power consumption of 50μW for our RPS based ADC whereas it is 130μW for the conventional sampling, both much larger than the ADC power consumption of 3.25μW at 1MS/s operation. Our ADC occupies an area of 0.08 mm2and achieves an SFDR of 64 dB, an SNDR of 55 dB with a Walden Figure of Merit, FoMw of 6.8fJ/conversion-step at up-to 2MS/s.
    Original languageEnglish
    Title of host publicationIEEE Asian Solid-State Circuits Conference (A-SSCC)
    Subtitle of host publicationproceedings of technical papers
    Place of PublicationPiscataway, NJ
    PublisherIEEE
    Pages217-220
    Number of pages4
    ISBN (Electronic)978-1-5386-3178-2
    ISBN (Print)978-1-5386-3179-9
    DOIs
    Publication statusPublished - 8 Nov 2017
    EventIEEE Asian Solid-State Circuits Conference, A-SSCC 2017 - Grand Hilton Hotel, Seoul, Korea, Republic of
    Duration: 6 Nov 20178 Nov 2017

    Conference

    ConferenceIEEE Asian Solid-State Circuits Conference, A-SSCC 2017
    Abbreviated titleA-SSCC
    CountryKorea, Republic of
    CitySeoul
    Period6/11/178/11/17

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  • Cite this

    Bindra, H. S., Lechevallier, J. B., Annema, A. J., Louwsma, S. M., van Tuijl, A. J. M., & Nauta, B. (2017). Range pre-selection sampling technique to reduce input drive energy for SAR ADCs. In IEEE Asian Solid-State Circuits Conference (A-SSCC): proceedings of technical papers (pp. 217-220). Piscataway, NJ: IEEE. https://doi.org/10.1109/ASSCC.2017.8240255