Mike Hagen wrote: > Microchip make some really nice op amps and programmable gain amps. > Singles, duals, quads. > I have had good luck with several of them. Look for low voltage/low > power operation with close to rail to rail outputs and inputs. > Don't even have to leave Microchip.com! The Microchip opamps are great when you need something that can run off the same supply as a PIC. However, they are all limited to 6V power, so wouldn't work with the OP's +-5V power. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist