After some searching, and not finding this answer.... for a standard inverting opamp circuit, where Rin and Rf are the same for a= unity gain buffer, I've found that I need to reduce the gain some so I'm p= utting in a smaller resistor value for Rin till I get the results, but I wo= nder if it makes a difference if I change Rin or Rf ? Rf changes will resu= lt in a different capacitor for compensation so end up changing two parts r= ather than one. =20 =20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .