Inverting Operational Amplifier Resistor Calculator

What is an Inverting Operational Amplifier Resistor Calculator?
An inverting operational amplifier (op-amp) is a basic op-amp configuration where the input signal is applied to the inverting (-) terminal, and the non-inverting terminal (+) is usually grounded. A resistor calculator for this circuit helps determine the resistor values needed to achieve a specific voltage gain.

In an inverting op-amp, the voltage gain Av is given by:

Where:
Av = Voltage gain (negative sign shows phase inversion)
Rf = Feedback resistor (resistor from op-amp output to inverting input)
Rin = Input resistor (resistor from input signal to inverting input)
Why Use an Inverting Op-Amp Resistor Calculator?

Simplifies Design: Quickly find resistor values to get a desired gain.
Avoids Manual Calculation: Reduces risk of errors when designing op-amp circuits.
Saves Time: Speeds up the design process, especially for multiple op-amp stages.
How Does the Calculator Work?
You typically provide:

Desired voltage gain Av
One known resistor value (either Rf or Rin )
The calculator then solves for the missing resistor value:

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Or

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When Should You Use This Calculator?

Audio amplification circuits
Signal conditioning and processing
Filtering and feedback control systems
Analog computing and mathematical operations