AVR-Chat

>
>Can you offer any type of link to how to use one ?

Think of it as a high accuracy zener diode with good knees.
You feed a small current at it, and it limits the voltage to 4.096V

>I down loaded the TI data sheet for an LM-385, 3 pin TO-92 package
>unit and the unit is shown as a zener with the voltage after a
>resistor.
>
>The idea of using 4.096 is interesting, but it would seem that 4.096
>would be the maximum voltage it could read ?

Nope, that's controlled by your input resistor scaling.