Other Parts Discussed in Thread: INA212, INA211, , INA333
For one of our design we require accurate measure of supply current (in range of uA to mA). Initially we planned of using INA211/INA212 but we found huge error at the output when the current drops below 1mA. After few search we found a reference design from TI (https://www.ti.com/lit/an/sboa210a/sboa210a.pdf) where they used an Instrumentation amplifier (INA326) to measure current in the range 10uA - 10mA. With the same reference we designed the circuit which can measure current in the range 1uA - 200uA. By doing spice simulation we were able to measure the current but we are not sure how to relate Input measured current with output voltage we couldn't find any formula to calculate output voltage in the datasheet.
Below attached the INA326 circuit from our design.
Kindly help us to verify the design,