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Current flowing out of INA226 VIN- terminal when shunt voltage well exceeds 81.92mV

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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!


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