> I assume that the answer will vary/depend on whether I'm > using the A/D module, which I am. I probably can't answer you, but I can guess what others will need to answer: Do you use the Vdd as reference, and if so, do you use radiometric mode or an absolute input? And what are your A/D accuracy requirements? Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products docent Hogeschool van Utrecht: www.voti.nl/hvu -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist