Den 2007-09-13 11:31:01 skrev Matthew Rhys-Roberts : > Just looking for figures on ADC noise, accuracy, drift etc. across the > PIC range. The datasheets don't seem to say much about measured ADC > performance. My reason for asking is to decide at what point I should > specify an external ADC for various reasons. > > Thanks > Matt I have not used much, but forget about PIC14000... The A/D in PIC18FJ-series need calibration to be good the data sheet say (and proide a routine for it for inclusion in your program when it initialises the A/D), but then they are better than the uncalibrateable one in PIC18 (Measuerements not done other than comparison of percieved noise.) -- Morgan Olsson -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist