The inverting amplifier circuit is relatively a simple circuit. A resistor is placed between the inverting input and the input signal. A second resistor is place between the output of the op-amp and the inverting input. The non-inverting input will be tie to ground. You can find below the schematic for the inverting amplifier :
The closed-loop gain or voltage gain of the inverting amplifier can be found with this formula :
Below, you have an example of a 5V sine wave into the inverting input of a inverting amplifier with a gain () of -1. The positive supply is 5V and the negative supply is -5V.
Do note that if the positive supply or negative supply is not high or low enough, the output voltage will clip at Vs+ or Vs- if the amplify signal exceeds the supply voltage..
The input impedance of the inverting amplifier is . This is a small inconvenience since this will reduce the input impedance of the circuit and it will depends on . This could potentially cause issues if is too small.