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INA193 accuracy/sensitivity to micro amps?

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Intellectual 255 points
Other Parts Discussed in Thread: INA193

New to current sensors.


Have an application that need to measure micro amps.

Looking at the INA193.

I was hoping that someone could tell me whether or not this device was right for the job or recommend something better.

Supply voltage:  5 or 3.3 VDC. 

Thank you,

Craig

  • 0
    TI__Intellectual 2480 points

    Hello Craig,

    If you are new to current sensors then I suggest you check out the Current Shunt Monitor FAQ, especially the section on low current measurement applications.  There is one reference design (TIPD135) in particular which is capable of sensing 10uA-100mA using an accurate instrumentation amplifier. 


    If this is not what you're looking for then please give us more information about your system. 

    1. What is the common mode voltage?
    2. What is the current range you are hoping to measure?
    3. What is the size of your shunt resistor?
    4. Do you want an analog or digital output?


    Best regards,

    Kareem Moulana