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ADS1018: settling time

Jon Bilbao
Intellectual 1435 points

Part Number: ADS1018

Hi, 

what is the settling time of the ADS1018? I cannot find it in the datasheet. 

Regards,

Jon

  • 0
    TI__Guru** 100865 points

    Jon,

    For the ADS1018, the conversion time is related to the nominal data rate. You would use this to determine how long to wait to read the conversion after a conversion is started. With some internal oscillator variation, you would need to wait a bit longer to guarantee that the conversion has completed.

    Starting with 1/(data rate) nominally for the conversion, you would add on 10% for any internal oscillator variation. Add on another 20us of time to for the device to power up and start the conversion.

    As an example,  take a case where the data rate is set to 1600SPS. This would take:

    (1/1600)*1.1 + 20us = 0.71ms

    Hopefully that answers your question. If I've misunderstood the question, or you have others, feel free to post back.

    Joseph Wu