Hi,

I have been using the AD on a 16f877A with no problems till now , but at the present , in order to change the AD resolution , I need to use the Vref- ( 0 is will not be zero /Vss , but will be 1.8v …) As so , I have been wandering around for a good stabilised Vref of 1.8 to connect to my Vref - ….Any suggestion , advices ? Any good and cheap IC you have been using to get similar V ref outputs?

Note: as you know the standard V divisor using R is really not good, fluctuates a lot, so this hint is out of the deck ;-) .

Thanks for any help!

Regards,
Jorge