Op-Amp Gain Calculator Analog Circuit

Inverting Β· Non-Inverting Β· Differential | Voltage Gain & Resistor Values

πŸ“– Op-Amp Gain Calculator

An operational amplifier (op-amp) is a fundamental building block in analog electronics. This calculator helps you determine the voltage gain and output voltage for inverting, non-inverting, and differential amplifier configurations.

πŸ“ Op-Amp Gain Formulas

Inverting: Av = -Rf / Rin
Non-Inverting: Av = 1 + (Rf / Rin)
Differential: Av = Rf / Rin
Output: Vout = Av Γ— Vin

πŸ“Š Common Op-Amp Configurations

ConfigurationGain FormulaPhaseApplication
Inverting-Rf/Rin180Β°Signal inversion, summing
Non-Inverting1 + Rf/Rin0Β°Buffer, amplifier
DifferentialRf/Rin0Β°Difference amplifier

❓ Frequently Asked Questions

What is op-amp gain? β–Ό
Op-amp gain (Av) is the ratio of output voltage to input voltage. It determines how much the signal is amplified. For example, Av = 10 means Vout = 10 Γ— Vin.
What is the difference between inverting and non-inverting gain? β–Ό
Inverting gain is negative (output is inverted relative to input) and depends on Rf/Rin. Non-inverting gain is positive (no inversion) and is 1 + Rf/Rin.
What is differential amplifier gain? β–Ό
A differential amplifier amplifies the difference between two input signals. Gain = Rf/Rin, and Vout = (V2 - V1) Γ— (Rf/Rin).
What resistor values should I use for op-amp gain? β–Ό
Choose resistors in the kΞ© to MΞ© range. Use precision resistors (1%) for accurate gain. Keep Rf/Rin ratio within the op-amp's bandwidth limitations.