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Original question:

INA213: About gain adjustment and noise countermeasure

INA213: looking for adjustable gain setting for current sense function

Ben Kuo
Expert 7700 points

Part Number: INA213
Other Parts Discussed in Thread: INA225

Dear team,

We design IN21x device as our current sense function.

But we want to find another solution which have more scale of gain setting. Did you have any suggested solution?

Or 

Did we need solution which set gain by external resistors to meet our requirement?

Thanks.

Ben

  • 0
    TI__Mastermind 26585 points

    Ben,

    The only device in our portfolio that is capable of dynamic gain change is the INA225. What is the customer requirement here?

    We typically do not recommend external resistors for the purpose of altering the gain, as they inject additional error into the system, and erode CMRR due to mismatch.