>
> If your actual input impedence is 910K || 10K (call it 10K), then  a 1ua 
> bias current results in an error of 10K*1ua = 0.01V
>   
Yeah but relatively fixed errors can be calibrated out, it is random 
noise that is a big problem.

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