Op-Amp Calculations

Operational amplifiers (op-amps) are the building blocks of many analog circuits. Two of the most common configurations are the inverting and non-inverting amplifiers, both of which have distinct characteristics, uses, and applications.

1. Inverting Amplifier

An inverting amplifier inverts the input signal and amplifies it. In this configuration, the input signal is applied to the inverting terminal of the op-amp (-), while the non-inverting terminal (+) is grounded. A feedback resistor connects the output back to the inverting input to provide gain control.

2. Non-Inverting Amplifier

A non-inverting amplifier amplifies the input signal without inverting its phase. In this configuration, the input signal is applied to the non-inverting terminal (+), while the feedback network is connected between the output and the inverting terminal (-). A portion of the output is fed back to the inverting input to control the gain.

The below calculators provide the quick calculations for these configurations.

Inverting					Non-Inverting
Parameters	Value	Unit			Parameters	Value	Unit
R1		Ohm			R1		Ohm
R2		Ohm			R2		Ohm
Gain					Gain
Vin		V			Vin		V
Vout		V			Vout		V

Note:- Please note that the gain of inverting amplifier is negetive.