I want to use a zener diode as a voltage reference to the the PIC18F2550, as the analog V+ reference. I am planning to use this zener diode, but I am not sure how to calculate its values. I am planning to have a 4.7V voltage reference, by just using a simple circuit as Vcc->Resistor->Zener->GND (using a reversed zener and gettitng its zener voltage).
looking at the zener's datasheet I cant see the zener curve on it, just the positive, foward voltage graph...why? And I can only see a table with just the values for a 5mA current. I was planning to use a 10K resistor, but by some simulations I am not getting 4.7V, which is probably because I am not giving it 5mA, but how may I calculate this? How may I know how much voltage will it output with a 10K resistor?