The way it typically works using a diode bridge. The current source is set to have compliance limit of 1ma while attempting to drive to a voltage. In this case the voltage will be 0v. Under this condition, the voltage is measured. So, it is a fixed 1ma load to ground. You can reference this document for some additional definitions. See Vol, Iol specifically. www.ti.com/.../szza036c Regards, Wade
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