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INA226-Q1: What is the Shunt input range of INA226-Q1?

Alan Xia
Genius 9680 points
Part Number: INA226-Q1
Other Parts Discussed in Thread: INA226

Hi team，

What is the Shunt input range of INA226-Q1?

Similar to the following picture of INA226:

In addition, when the customer +BATT=9V,
The voltage difference of IN+IN- SHUNT INPUT range is: 0.142V min 0.144V typ 0.145V max what will happen？
Please help me to confirm.

Thanks！

  • +1
    TI__Expert 8155 points

    Hello Alan,

    Alan Xia said:
    when the customer +BATT=9V,
    The voltage difference of IN+IN- SHUNT INPUT range is: 0.142V min 0.144V typ 0.145V max what will happen？

    The INA226-Q1 needs to be powered by less than 6V to eliminate risk of damaging the device, connecting 9V to the Vs pin will damage the INA226.

    The Differential (IN+ - IN-) voltage needs to be kept between -40 to 40 volts and the absolute voltage must be between -0.3 to 40 volts to avoid damage, so there will be no risk of damage from applying 142-145mV to the pins.

    Alan Xia said:
    What is the Shunt input range of INA226-Q1?

    The differential input range is -81.9175mV to 81.92mV, so the voltage range you are considering (142-145mV) will be out of range for the device and you will not be able to make meaningful measurements.

    Let me know if you need any more help with this issue,

    Levi DeVries