Op-Amp Gain Calculator

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Non-inverting: output is in phase with input. Inverting: output is 180 degrees out of phase. Difference: amplifies the difference between two input voltages.
The resistor connected from the inverting input to ground (non-inverting) or from the signal source to the inverting input (inverting).
The resistor connected between the op-amp output and the inverting (-) input (feedback path).
Enable to enter an input voltage and calculate the output voltage.
The input signal voltage. Used to compute the output voltage.
V
Voltage gain (Av)Moderate gain
11V/V

Ratio of output voltage to input voltage

Gain in decibels20.83dB
Output voltage (Vout)1.1V
Input impedance (Zin)Very high (ideal: infinite)
Phase shift0 degrees (in phase)
20.83 dB
Attenuation<0Low gain (0-20 dB)0-20Moderate gain (20-40 dB)20-40High gain (40-60 dB)40+

Av = 11.0000 V/V | 20.83 dB

  • This non inverting amplifier has a voltage gain of 11.0000 V/V (20.83 dB), meaning the output amplitude is 11.00 times the input.
  • The output is in phase with the input (0 degrees phase shift), which is the hallmark of a non-inverting amplifier.
  • With a 0.100 V input, the output is 1.1000 V.

Next stepKeep feedback resistor values in the 1 kohm to 1 Mohm range to balance noise, bandwidth, and bias current errors.

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