E7G04:

What is meant by the "op-amp input offset voltage"?

  1. The output voltage of the op-amp minus its input voltage
  2. The difference between the output voltage of the op-amp and the input voltage required in the immediately following stage
  3. The differential input voltage needed to bring the open loop output voltage to zero
  4. The potential between the amplifier input terminals of the op-amp in an open loop condition