Introduction

FAQ

What parameters do I need to input for the calculation?

You need to input the resistor values (R1-R4 in kΩ), input voltages (V1 and V2 in volts), and the op-amp's power supply voltages (Vp and Vn in volts). These parameters allow the tool to calculate the output voltage and gains accurately.

Why does the output voltage sometimes show "Output is clipped"?

This occurs when the calculated Vout exceeds the op-amp's supply voltages (Vp or Vn). Real op-amps cannot output voltages beyond their supply rails, so the signal is clipped at ±Vp/Vn. Ensure your input signals and resistor ratios stay within the supply limits.

How are the inverting and non-inverting gains calculated?

Inverting Gain: Gain = -R2/R1 (negative due to signal inversion). Non-Inverting Gain: Gain = 1 + R2/R1. The tool uses these formulas to compute gains based on your resistor values.

Can I use this calculator for differential amplifier configurations?

No, this tool is designed for basic inverting/non-inverting op-amp circuits. For differential amplifiers (e.g., using R3 and R4), refer to a dedicated differential amplifier calculator, as the formula involves additional resistor ratios.

Why is the non-inverting gain formula different from the inverting gain?

In a non-inverting configuration, the input signal is applied directly to the op-amp's non-inverting terminal, resulting in a positive gain (1 + R2/R1). For inverting setups, the signal is fed through resistors to the inverting terminal, causing phase inversion and a negative gain (-R2/R1).