Thats all true....he can get by with 16bit, but wanted to use something better than 16bit ADC to make sure he can obtain it. So even at 20bit, it should be fine. Xiaofan Chen wrote: On Jan 24, 2008 7:35 AM, Xiaofan Chen wrote: > 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). > And if you use the internal gains, the effective resolution is even lower. Xiaofan -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist --------------------------------- Never miss a thing. Make Yahoo your homepage. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist