On Jan 23, 2008 11:49 PM, alan smith wrote: > The fastest I am reading is maybe once a minute. The client wants... > desires...24 bit accuracy so have to stick with an external ADC. I see. But you won't get 24bit accuracy anyway. Not even 24bit resolution according to the datasheet (maximum effective resolution is 23bits in the slowest update rate). Xiaofan -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist