On Sun, 22 Jun 2003, Kyrre Aalerud wrote:

> 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.

How much above 70mV would you see with an overcurrent condition, max?  In
other words, is there some range between 70mV and, say, 5V that you could
safely assume to be in the "ON" range, OR do you have some other way of
indicating when the FET is on?  If so, you could voltage limit the input
to Vdd or below with a resistor and Zener or whatever, and only use the
input when the FET is known to be on.

Dale
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