Keywords: Op-Amp Unity-Gain Buffer.svg A circuit diagram of a buffer amplifier made using an operational amplifier <math> V_\mathrm out V_\mathrm in \ \ </math> <math>Z_\mathrm in \infin</math> realistically the differential input impedance of the op-amp itself 1 MΩ to 1 TΩ own 2009-01-26 Inductiveload Own work all rights released Public domain Operational amplifier circuits |