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HDC3020: Sensor Structure

Tomoki Takeda
Prodigy 560 points
Part Number: HDC3020

Tool/software:

Hi,

Please tell me which following sensor structure TI devices has including HDC3020?

Regards, Tomoki

  • +1
    TI__Genius 12235 points

    Tomoki-san,

    The HDC3020 structure is like option B, where the electrode does not contact air directly, but uses a polymer as an intermediate medium. The polymer captures water vapor, which will alter the relative permittivity of the polymer, triggering a change in capacitance between the electrodes that is translated into a %RH value.

    Regards

    -Alex Thompson