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Member #361669

Member Since: September 15, 2012

Country: United States

  • I am seeing a problem with linearity in the amp output. It’s not until 6 amps or higher when the output becomes somewhat linear. Looking at page 4 of INA169 spec sheet, this makes sense. The graph “Output Error vs Vin” shows that minimum Vin for small output error is around 10mV. To get 10mV across a 0.001 resistor you would need 10 amps. I would like to measure amps down to 0.2 but the readings would be way off if using just a scaling factor. I wonder if the INA282 and a 0.005 shunt would have been a better choice.

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