On Tue, Mar 8, 2011 at 9:45 AM, Olin Lathrop wro= te: > Oh, I thought you were putting them right at the input. If you don't, th= en > the DC bias will be amplified by the first stage, which may cause clippin= g > there. I guess we don't really know what you're trying to do. Show a > schematic so we can all be on the same page. The DC bias isn't large enough to cause clipping. The gain is low enough so that everything stays within rail to rail values. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .