1. What is Op Amp Gain?

The operational amplifier (op amp) gain is the ratio of output voltage to input voltage. It's a fundamental parameter that determines how much an op amp circuit amplifies the input signal.

2. How Does the Calculator Work?

The calculator uses the basic gain formula:

Where:

• \( V_{out} \) — Output voltage (V)
• \( V_{in} \) — Input voltage (V)

Explanation: The gain is simply calculated by dividing the output voltage by the input voltage.

3. Importance of Gain Calculation

Details: Knowing the gain is essential for designing amplifier circuits, signal processing systems, and understanding how an op amp will behave in a given configuration.

4. Using the Calculator

Tips: Enter both output and input voltages in volts (V). The input voltage cannot be zero (division by zero is undefined).

5. Frequently Asked Questions (FAQ)

Q1: What is typical op amp gain range?
A: Open-loop gain can be 100,000 or more, while closed-loop gain depends on feedback configuration but is typically much lower.

Q2: How does gain relate to decibels (dB)?
A: Gain in dB = 20 × log10(voltage gain). For example, a gain of 10 equals 20 dB.

Q3: What affects op amp gain accuracy?
A: Factors include op amp specifications (open-loop gain, bandwidth), resistor tolerances in feedback networks, and temperature.

Q4: What's the difference between open-loop and closed-loop gain?
A: Open-loop is the intrinsic gain of the op amp without feedback, while closed-loop is the gain with feedback applied.

Q5: Can gain be less than 1?
A: Yes, in voltage follower or attenuator configurations, the gain can be 1 or less than 1 respectively.