An inverting amplifier with nominal gain of −20 V/V employs an o...
An inverting amplifier is a type of operational amplifier (op-amp) configuration that produces an output signal that is the inverse (or opposite) of the input signal. The nominal gain of an inverting amplifier refers to the amplification factor by which the input signal is multiplied.
The gain of an inverting amplifier is determined by the ratio of two resistors, Rf and Rin, connected to the op-amp. The formula for calculating the gain is:
Gain = - (Rf / Rin)
The negative sign indicates that the output signal is inverted compared to the input signal. By selecting appropriate resistor values, the magnitude of the gain can be adjusted to the desired level.
For example, if Rf = 10kΩ and Rin = 1kΩ, the gain of the inverting amplifier would be:
Gain = - (10kΩ / 1kΩ) = -10
This means that the output signal will be 10 times smaller in magnitude than the input signal, but with the opposite polarity.