A 0.1nW-1μW all-dynamic capacitance-to-digital converter with power/speed/capacitance scalability

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A versatile, low power and energy efficient Capacitance-to-Digital Converter (CDC) for Internet-of-Things (IoT) is presented, based on an all-dynamic architecture with adaptable speed, resolution and range. Sampling rates from 1S/s up to 100kS/s are supported and capacitances from 1.23 to 24.59pF can be digitized while the power scales inherently from 0.1nW to 1μW. This makes the design versatile to efficiently deal with a variety of sensors with different speed requirements and different capacitance values. The 0.1nW lowest absolute power is >20x smaller than prior-art, and the Figure-of-Merit (FoM) from 18 to 59fJ/conv-step is also the lowest among prior designs. As example, by connecting a MEMS pressure sensor, this chip can measure environmental pressure with only 0.8nW at a speed of 100S/s.

Originele taal-2Engels
TitelESSCIRC 2018 - IEEE 44th European Solid State Circuits Conference
Plaats van productiePiscataway
UitgeverijInstitute of Electrical and Electronics Engineers
Pagina's118-121
Aantal pagina's4
ISBN van elektronische versie9781538654040
DOI's
StatusGepubliceerd - 16 okt 2018
Evenement44th IEEE European Solid State Circuits Conference, ESSCIRC 2018 - Dresden, Duitsland
Duur: 3 sep 20186 sep 2018

Congres

Congres44th IEEE European Solid State Circuits Conference, ESSCIRC 2018
Verkorte titelESSCIRC 2018
LandDuitsland
StadDresden
Periode3/09/186/09/18

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Xin, H., Andraud, M., Baltus, P., Cantatore, E., & Harpe, P. (2018). A 0.1nW-1μW all-dynamic capacitance-to-digital converter with power/speed/capacitance scalability. In ESSCIRC 2018 - IEEE 44th European Solid State Circuits Conference (blz. 118-121). [8494321] Piscataway: Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/ESSCIRC.2018.8494321