A 0.2V, 7.5 μW, 20 kHz ΣΔ modulator with 69 dB SNR in 90 nm CMOS

Ulrik Sørensen Wismar, D Wisland, Pietro Andreani

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    This paper presents a frequency-to-digital SigmaDelta modulator designed in a digital 90nm CMOS process, operating with a supply voltage of 0.2 V. For a 7.5 muW power consumption, the SNR is 68.9 dB and the SNDR is 60.3 dB over a 20Hz-20kHz bandwidth. This work shows that the SNR/SNDR performance of this kind of SigmaDelta converter can be adjusted over a wide range, while maintaining a state-of-the-art flgure-of-merit of 82 fJ/conversion.
    Original languageEnglish
    Title of host publicationESSCIRC 33rd European Solid State Circuits Conference, 2007.
    Publication date2007
    ISBN (Print)978-1-4244-1125-2
    Publication statusPublished - 2007
    Event33rd European Solid-State Circuits Conference - Munich, Germany
    Duration: 11 Sept 200713 Sept 2007
    Conference number: 33


    Conference33rd European Solid-State Circuits Conference

    Bibliographical note

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