Hi,
Current ranger shows higher sleep current (around 33uA) when measuring current in uA range on an Unit under test powered by a Digilent Analog Discovery kit 2 (which has a programmable voltage output and is driven through USB or external power supply). The same setup when using the UUT with a multi meter shows a much lower sleep current (<3uA). The current measurement on the UUT is on the high side, i.e., in series with the power input to the device. The ground from the UUT is not connected to the current ranger setup.
When I try to power the UUT from an external power supply and the current ranger, I do not see this issue.
Could somebody help?
Best Regards,
Srihari