The circuit diagram of an ideal non-inverting amplifier is as shown in the figure below.įrom the circuit, it can be seen that the R 2 (R f in the above picture) and R 1 (R 1 in the above picture) act as a potential divider for the output voltage and the voltage across resistor R 1 is applied to the inverting input. The high input impedance and low output impedance of the non-inverting amplifier make the circuit ideal for impedance buffering applications. A non-inverting amplifier also uses a negative feedback connection, but instead of feeding the entire output signal to the input, only a part of the output signal voltage is fed back as input to the inverting input terminal of the op-amp. In other words, a non-inverting amplifier behaves like a voltage follower circuit. Output Impedance of Non-Inverting AmplifierĪn Operational Amplifier or more commonly known as Op Amp is essentially a multi stage high gain differential amplifier which can be used in several ways. Two important circuits of a typical Op Amp are:Ī non-inverting amplifier is an op-amp circuit configuration that produces an amplified output signal and this output signal of the non-inverting op-amp is in-phase with the applied input signal.Input Impedance of Non-Inverting Amplifier. Voltage Gain of Non-Inverting Operational Amplifier.
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