Hello,
For clarifying the issue, I used INA226EVM to recreate the case.
VIN- is connected to GND through 6.8k resistor.
VIN+ is connected to VS(3.32V). See the attached pics for detail setup.
The multimeter measured voltage drop across (VIN-, GND) is 1.62V. My question is: as VIN- is pulled down to GND by 6.8k resistor and VIN- input impedance is high, why isn't VIN- pulled close to GND?? How comes the 1.62V? Does leakage current as high as 1.62/6.8k = 238uA really flow out of VIN-?
Thanks in advance!