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Question about AD8495

Hi All,

I have a question about the AD8495. Please take a look at the attachment.

I think it is not out of spec, but I would like to know the cause of these variation.

Regards,

Kazu

QuestionaboutAD8495.pdf
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  • Hi Kazu,

    For a measurement temperature range of 0 to 220degC, and using the equation Vout(mV) = a0 + a1*T+a2*T^2+a3*T^3+a4*T^4+a5*T^5+a6*T^6 where T is the measurement temperature:

    The error from using this polynomial is about +/-1.5mV over the whole measurement range.  

    If you are still having issues after implementing this equation, I'd be interested to see the newest data in the plot that you originally sent.  

    Did you try swapping out the precision source?  Do you have a way of measuring what is actually coming out of that source?  

    Regards,

    Jordyn

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  • Hi Kazu,

    For a measurement temperature range of 0 to 220degC, and using the equation Vout(mV) = a0 + a1*T+a2*T^2+a3*T^3+a4*T^4+a5*T^5+a6*T^6 where T is the measurement temperature:

    The error from using this polynomial is about +/-1.5mV over the whole measurement range.  

    If you are still having issues after implementing this equation, I'd be interested to see the newest data in the plot that you originally sent.  

    Did you try swapping out the precision source?  Do you have a way of measuring what is actually coming out of that source?  

    Regards,

    Jordyn

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