> FWIW, I think low side sensing is inherently more precise (with
> equal precision of the resistors)

I might actually re-think this. If I bump up the range to say 0.2V -
5.32V (for an offset 0 - 5.12V effective range) with a higher PIC
Vcc, then that leaves < 0.2V for no-current detection

Hmmmm

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist