Dwayne: Look at the National LMC6462 - dual, rail-to-rail, 0.25 mv (typical) offset. $3.10 at Digikey. I'm using the quad version in a current project. Larry Larry Bradley Orleans (Ottawa), Ontario, CANADA -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads