Abstract: An operational amplifier circuit has a differential input circuit including a first transistor, which receives a first input signal and generates a first voltage, and a second transistor, which receives a second input signal and generates a second voltage. An output stage circuit includes a third transistor responsive to the second voltage, a fourth transistor connected to the third transistor, a fifth transistor responsive to the first voltage, and a sixth transistor connected to the fifth transistor. The output stage circuit generates an output signal of the amplifier circuit at a first node between the fifth and sixth transistors. A seventh transistor connected between the third and fourth transistors controls the potential at a second node between the third and seventh transistors to be the same as the potential of the first input signal in correspondence with the first input signal.

Abstract: An operational amplifier circuit has a differential input circuit including a first transistor, which receives a first input signal and generates a first voltage, and a second transistor, which receives a second input signal and generates a second voltage. An output stage circuit includes a third transistor responsive to the second voltage, a fourth transistor connected to the third transistor, a fifth transistor responsive to the first voltage, and a sixth transistor connected to the fifth transistor. The output stage circuit generates an output signal of the amplifier circuit at a first node between the fifth and sixth transistors. A seventh transistor connected between the third and fourth transistors controls the potential at a second node between the third and seventh transistors to be the same as the potential of the first input signal in correspondence with the first input signal.