ProcirelCalculate the voltage gain of standard operational amplifier configurations. Supports both inverting (output is phase-shifted 180°) and non-inverting configurations. Also calculates the gain in decibels (dB) and the output voltage for a given input signal.
How to use this calculator
Step-by-Step Instructions
1. **Select configuration** Choose inverting (signal enters through Rin to inverting input) or non-inverting (signal enters non-inverting input directly).
2. **Enter Rf** The feedback resistor connected between the output and the inverting input.
3. **Enter Rin** The input resistor. For inverting: connected between signal and inverting input. For non-inverting: connected between inverting input and ground.
4. **Optionally enter Vin** If you provide an input voltage, the calculator also shows the expected output voltage.
Worked Example
Non-inverting amplifier with Rf = 100kΩ, Rin = 10kΩ:
Gain = 1 + (100000 ÷ 10000) = **11× (20.83 dB)**
With Vin = 0.1V Vout = 0.1 × 11 = **1.1V**