After working on this for a few days I need some ideas. I have a 3.3V load that can vary from 10uA to 150mA when plugged in. I can't afford more than .1V drop in the sensing circuit and need a 3.3V signal to indicate => 10uA to the load. I am not trying to measure the current, just the presence of =>10uA (>0uA also works). Any ideas greatly appreciated!