> Problem is:
>
> FET off = 16 Volts.
> FET on = 0-70 mV.
>
> I need to compare the voltage when FET is on to a set reference of 70
> mV. If Voltage across FET is abowe 70mV I have a over-current condition
> and should turn FET off.

So what exactly is the problem?  Sounds like you only need to compare to
70mV.  You should easily be able to clamp to something will under 5V
without effecting the voltage at 70mV.


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