Hello,
I am having trouble in INA233 current calibration with the EVM board/GUI and below is my detail steps:
1.Use the equation in data sheet to calculate the Current_LSB=(Maximum Expected Current)/2^15=15A/2^15=457.7uA/bit,then I choose 1mA/bit as the Current_LSB.
2.Use the equation in data sheet to calculate the MFR_CALIBRATION value=0.00512/(Current_LSB*Rshunt)=0.00512/(1mA/bit*0.5mΩ)=10240(Decimal)/2800(Hex)
3.Power up the INA233 EVM board,start the GUI and write 2800(Hex) into the MFR_CALIBRATION successfully.
4.Connect a 0.5 mΩ external resistor to the IN+/IN- terminal on INA233 EVM board and apply 2A current accross the resistor.
5.Read the VSHUNT_OUT value on EVM GUI and the vlaue is 0.0275V which is correct.
6.Read the READ_INN value and the vlaue is 7FFF/32767 which I suppose is abnormal.
Below is my question:
1.Since I can read the VSHUNT_OUT on GUI directly,is there somewhere on GUI I can read the current directly as well?If not,where can I read the current value and how to translate it into a decimal value in ampere?