• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 48 subscribers
  • Views 352 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

INA199: Repeat accuracy

NAOKI AOYAMA
Guru 11215 points
Part Number: INA199

Hello,

Our customer use the INA199.

The customer are considering about repeat accuracy.

Is there any factor impact on repeat accuracy?

Best Regards,

Naoki Aoyama

  • 0
    Guru 140200 points
    Hi Naoki,

    repeat accuracy? Do you mean something like hysteresis which can be seen with pressure sensors, for instance? The INA199 should not show any hysteresis. The INA199 has an input offset voltage and an input bias current which can drift a bit with temperature. But a distinct hysteresis? No. Have you observed anything which looks like a repeat error?

    Kai
  • 0
    TI__Mastermind 32395 points
    Hello Naoki,

    Thanks for reaching out on the forum.

    As long the the device is operating under the same conditions then it will show the same accuracy. The offset, CMRR, PSRR, and gain errors for any one device will be the same and repeatable if device is operating under the same conditions. Now if the device is stored or operated in temperature conditions outside the absolute maximum ratings, then its performance could shift, but as long as this temperature is not violated and the device accuracy is examined under the same operating conditions, then its accuracy will be repeatable. This in effect allows a user to calibrate out this error.

    Hope this helps.

    Best,
    Peter Iliya
    Current Sensing Applications
  • 0 in reply to Peter Iliya
    Guru 11215 points
    Hello Peter,

    Thank you for your reply.
    I understood that the offset is repeatable.

    Thanks,
    Naoki Aoyama