Dual Polarity Analog Output Op-Amps By delabs | December 15, 2008 - 9:30 PM |March 30, 2009 Opamp-Circuits When you have to buffer and invert the polarity of mV input levels. This is the circuit you can use, as OP07 has uV offset. R9 and R10 can be 100K 1% MFR or better. Use a symmetrical dual supply. OP07: Ultralow Offset Voltage Operational Amplifier Bookmark the permalink.