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AMC1301: About Nonlinearity

Junya Kato
Expert 1635 points

Part Number: AMC1301

Hello Team,


TCEg : -50(min), ±15(typ), 50(max) [ppm/℃]
Nonlinearity: -0.03%(min), ±0.01%(typ), 0.03%(max)


What formula does the above nonlinearity calculate?
I would like to know if this nonlinearity becomes close to ±0.01% as Vfsr becomes smaller than ±250mV.


Best regards,
Kato

  • 0
    TI__Guru**** 183061 points
    Hi Kato,

    Thank you for your questions about the AMC1301! In regards to your first question, I'm not sure that I understand what formula you are looking for. The gain and non-linearity errors are based on physical measurements, not calculations. Figures 22 and 23 present the gain error drift with VDD1 at 3.3 and 5.0V, while Figures 25, 26 and 27 show nonlinearity over input voltage, supply voltage and temperature. Is this the detail you are looking for?
  • 0 in reply to Tom Hendrick
    Expert 1635 points
    Hello Tom-san,

    Thank you for your answer.
    I understand that it is a physical measurement rather than a formula.
    Figures 22, 23, 25, 26 and 27 are very helpful.

    Best regards,
    Kato