CTMU: Do internal parallel current paths exist?
For the higher CTMU ranges, the internal resistances have a significant effect on the calibration, therefore, the High-Current mode calibration is appropriate. The High-Current mode calibration is typically limited to a single device pin with a dedicated connection to the CTMU.
4.3 Calibration and Measurement Considerations
The chosen resistor value should be at least 100 times the internal resistance to minimize the offsets generated by the internal resistors.