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HDC2080: Measurment time

HS FAE Germany
Mastermind 32220 points
Part Number: HDC2080

Hello,
what is the complete measurment time in case a change in the humidity? Do we have any app notes?

Regards, Holger

  • 0
    TI__Guru* 91206 points

    Dear Holger - 

    The conversion (or measurement) time per sample depends on the bits of resolution the device has been set for. For example, 14 bit conversion time for temp + humidity would be typically taking 610uSec + 660uSec for ~1270uSec, 11 bit would be total ~750uSec and and 9 bit total time would be around 500uSec.

    Here you can see where I stepped a chamber in 2.5%RH increments over time (units are seconds) and the HDC2080 performed well, responding to the chamber step changes quickly. 

       

  • 0 in reply to Josh Wyatt
    TI__Mastermind 32220 points

    Hello Josh,
    is there no settle time for the polyimide? What is the settle time from 0%RH to 100%RH or from 20%RH to 80%RH?

    Regards, Holger

  • 0 in reply to HS FAE Germany
    TI__Guru* 91206 points

    Holger - 

    Typical response time for the range is at 8 seconds in the datasheet - normally we wait at least about 10-20 minutes for chamber to settle.