1. What is Op-Amp Gain?

Operational amplifier (op-amp) gain refers to the amplification factor of the op-amp circuit. For non-inverting configurations, the gain determines how much the input signal is amplified at the output.

2. How Does the Calculator Work?

The calculator uses the non-inverting op-amp gain formula:

Where:

• \( Gain \) — Voltage gain (dimensionless)
• \( R_f \) — Feedback resistor (Ω)
• \( R_g \) — Ground resistor (Ω)

Explanation: The gain is determined by the ratio of the feedback resistor to the ground resistor plus one, providing amplification without phase inversion.

3. Importance of Gain Calculation

Details: Accurate gain calculation is essential for designing amplifier circuits, signal processing systems, and ensuring proper signal amplification in electronic applications.

4. Using the Calculator

Tips: Enter both resistor values in ohms (Ω). Ensure values are positive and non-zero for accurate calculations.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between inverting and non-inverting op-amp configurations?
A: Non-inverting configuration amplifies without phase reversal (gain ≥ 1), while inverting configuration reverses phase (gain can be less than 1).

Q2: What are typical resistor values for op-amp circuits?
A: Common values range from 1kΩ to 1MΩ, depending on the application and desired gain.

Q3: Can the gain be less than 1 in non-inverting configuration?
A: No, the minimum gain for non-inverting configuration is 1 (when R_f = 0 or R_g = ∞).

Q4: What factors affect op-amp performance?
A: Bandwidth, slew rate, input impedance, output impedance, and power supply limitations can affect real-world performance.

Q5: When should I use non-inverting vs inverting configuration?
A: Use non-inverting for high input impedance applications, and inverting when phase inversion is acceptable or desired.