Gain of Feedback Operational Amplifier Calculator

Open Loop Gain - The Open Loop Gain is gain of an op-amp without feedback. It is denoted as A.
Feedback Factor - The feedback factor of an op-amp application defines the circuit performance.

STEP 1: Convert Input(s) to Base Unit

Feedback Factor: 0.4 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

A = 1/β --> 1/0.4

Evaluating ... ...

A = 2.5

STEP 3: Convert Result to Output's Unit

2.5 --> No Conversion Required

FINAL ANSWER

2.5 <-- Open Loop Gain

(Calculation completed in 00.004 seconds)

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Created by Payal Priya

Birsa Institute of Technology (BIT), Sindri

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National Institute Of Technology (NIT), Hamirpur

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< 8 Integrator & Difference Calculators

Common Mode Gain of Difference Amplifiers

Go Common Mode Gain = (Resistance 4/(Resistance 4+Resistance 3))*(1-((Resistance 2*Resistance 3)/(Resistance 1*Resistance 4)))

Output Voltage of Difference Amplifier

Go Output Voltage = (Resistance 2/Resistance 1)*(Positive Terminal Voltage-(Negative Terminal Voltage))

Output Voltage 1 of Difference Amplifier

Go Output Voltage 1 = -(Resistance 2/Resistance 1)*Negative Terminal Voltage

Output Voltage 2 of Difference Amplifier

Go Output Voltage 2 = (Resistance 2/Resistance 1)*Positive Terminal Voltage

Common Mode Rejection Ratio of Difference Amplifiers

Go CMRR = 20*log10((Differential Mode Gain)/(Common Mode Gain))

Differential Gain of Difference Amplifier

Go Differential Mode Gain = Resistance 2/Resistance 1

Integrator Frequency

Go Integrator Frequency = 1/(Resistance*Capacitance)

Gain of Feedback Operational Amplifier

Go Open Loop Gain = 1/Feedback Factor

Gain of Feedback Operational Amplifier Formula

Open Loop Gain = 1/Feedback Factor
A = 1/β

What is feedback amplifier?

The process of injecting a fraction of the output energy of some device back to the input is known as Feedback. It has been found that feedback is very useful in reducing noise and making the amplifier operation stable.

Depending upon whether the feedback signal aids or opposes the input signal, there are two types of feedbacks used - Positive Feedback and Negative Feedback.
The feedback in which the feedback energy i.e., either voltage or current is in phase with the input signal and thus aids it is called Positive feedback.

The feedback in which the feedback energy i.e., either voltage or current is out of phase with the input and thus opposes it, is called negative feedback.

How to Calculate Gain of Feedback Operational Amplifier?

Gain of Feedback Operational Amplifier calculator uses Open Loop Gain = 1/Feedback Factor to calculate the Open Loop Gain, The Gain of Feedback Operational Amplifier formula is defined as the gain that results when we apply negative feedback to tame the open-loop gain. The closed-loop gain can be calculated if we know the open-loop gain and the amount of feedback (what fraction of the output voltage is negatively fed back to the input). Open Loop Gain is denoted by A symbol.

How to calculate Gain of Feedback Operational Amplifier using this online calculator? To use this online calculator for Gain of Feedback Operational Amplifier, enter Feedback Factor (β) and hit the calculate button. Here is how the Gain of Feedback Operational Amplifier calculation can be explained with given input values -> 2.5 = 1/0.4.

FAQ

What is Gain of Feedback Operational Amplifier?

The Gain of Feedback Operational Amplifier formula is defined as the gain that results when we apply negative feedback to tame the open-loop gain. The closed-loop gain can be calculated if we know the open-loop gain and the amount of feedback (what fraction of the output voltage is negatively fed back to the input) and is represented as A = 1/β or Open Loop Gain = 1/Feedback Factor. The feedback factor of an op-amp application defines the circuit performance.

How to calculate Gain of Feedback Operational Amplifier?

The Gain of Feedback Operational Amplifier formula is defined as the gain that results when we apply negative feedback to tame the open-loop gain. The closed-loop gain can be calculated if we know the open-loop gain and the amount of feedback (what fraction of the output voltage is negatively fed back to the input) is calculated using Open Loop Gain = 1/Feedback Factor. To calculate Gain of Feedback Operational Amplifier, you need Feedback Factor (β). With our tool, you need to enter the respective value for Feedback Factor and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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