Output Resistance with Feedback of Feedback Transconductance Amplifier Calculator

✖The Open Loop Gain of an Operational Amplifier is gain of an op-amp without feedback. It is denoted as A.ⓘ Open Loop Gain of an Operational Amplifier [A]			+10% -10%
✖The feedback factor of an op-amp application defines the circuit performance.ⓘ Feedback Factor [β]			+10% -10%
✖Output resistance is the value of resistance of the network.ⓘ Output Resistance [R_o]			+10% -10%

✖Output Resistance of Current Amplifier with feedback is the resistance across the output terminals of a current amplifier.ⓘ Output Resistance with Feedback of Feedback Transconductance Amplifier [R_cof]

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Formula

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Output Resistance with Feedback of Feedback Transconductance Amplifier

Formula

`"R"_{"cof"} = (1+"A"*"β")*"R"_{"o"}`

Example

`"4.657204kΩ"=(1+"2.2"*"0.454")*"2.33kΩ"`

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Output Resistance with Feedback of Feedback Transconductance Amplifier Solution

STEP 0: Pre-Calculation Summary

Formula Used

Output Resistance of Current Amplifier = (1+Open Loop Gain of an Operational Amplifier*Feedback Factor)*Output Resistance
R_cof = (1+A*β)*R_o
This formula uses 4 Variables

Variables Used

Output Resistance of Current Amplifier - (Measured in Ohm) - Output Resistance of Current Amplifier with feedback is the resistance across the output terminals of a current amplifier.
Open Loop Gain of an Operational Amplifier - The Open Loop Gain of an Operational Amplifier 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.
Output Resistance - (Measured in Ohm) - Output resistance is the value of resistance of the network.

STEP 1: Convert Input(s) to Base Unit

Open Loop Gain of an Operational Amplifier: 2.2 --> No Conversion Required
Feedback Factor: 0.454 --> No Conversion Required
Output Resistance: 2.33 Kilohm --> 2330 Ohm (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R_cof = (1+A*β)*R_o --> (1+2.2*0.454)*2330

Evaluating ... ...

R_cof = 4657.204

STEP 3: Convert Result to Output's Unit

4657.204 Ohm -->4.657204 Kilohm (Check conversion here)

FINAL ANSWER

4.657204 Kilohm <-- Output Resistance of Current Amplifier

(Calculation completed in 00.004 seconds)

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Created by Payal Priya

Birsa Institute of Technology (BIT), Sindri

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< 3 Series Feedback Amplifiers Calculators

Output Resistance with Feedback of Feedback Transconductance Amplifier

Go Output Resistance of Current Amplifier = (1+Open Loop Gain of an Operational Amplifier*Feedback Factor)*Output Resistance

Input Resistance with Feedback of Feedback Transconductance Amplifier (Series-Series)

Go Input Resistance with Feedback = (1+Open Loop Gain of an Operational Amplifier*Feedback Factor)*Input Resistance

Open Loop Gain of Feedback Transconductance Amplifier

Go Open Loop Gain of an Operational Amplifier = Output Current/Input Voltage

Output Resistance with Feedback of Feedback Transconductance Amplifier Formula

Output Resistance of Current Amplifier = (1+Open Loop Gain of an Operational Amplifier*Feedback Factor)*Output Resistance
R_cof = (1+A*β)*R_o

What is the working principle of transconductance amplifier?

A transconductance amplifier converts an input of voltage to an output of current. It is also called a current-to-voltage converter or I-to-V converter. It is called transconductance because the efficiency of the amplifier is measured in units of conductance.

How to Calculate Output Resistance with Feedback of Feedback Transconductance Amplifier?

Output Resistance with Feedback of Feedback Transconductance Amplifier calculator uses Output Resistance of Current Amplifier = (1+Open Loop Gain of an Operational Amplifier*Feedback Factor)*Output Resistance to calculate the Output Resistance of Current Amplifier, Output Resistance with Feedback of Feedback Transconductance Amplifier formula is defined as the measure of the opposition to current flow (impedance), both static (resistance) and dynamic (reactance), into the load network being connected that is internal to the electrical source. Output Resistance of Current Amplifier is denoted by R_cof symbol.

How to calculate Output Resistance with Feedback of Feedback Transconductance Amplifier using this online calculator? To use this online calculator for Output Resistance with Feedback of Feedback Transconductance Amplifier, enter Open Loop Gain of an Operational Amplifier (A), Feedback Factor (β) & Output Resistance (R_o) and hit the calculate button. Here is how the Output Resistance with Feedback of Feedback Transconductance Amplifier calculation can be explained with given input values -> 0.004657 = (1+2.2*0.454)*2330.

FAQ

What is Output Resistance with Feedback of Feedback Transconductance Amplifier?

Output Resistance with Feedback of Feedback Transconductance Amplifier formula is defined as the measure of the opposition to current flow (impedance), both static (resistance) and dynamic (reactance), into the load network being connected that is internal to the electrical source and is represented as R_cof = (1+A*β)*R_o or Output Resistance of Current Amplifier = (1+Open Loop Gain of an Operational Amplifier*Feedback Factor)*Output Resistance. The Open Loop Gain of an Operational Amplifier is gain of an op-amp without feedback. It is denoted as A, The feedback factor of an op-amp application defines the circuit performance & Output resistance is the value of resistance of the network.

How to calculate Output Resistance with Feedback of Feedback Transconductance Amplifier?

Output Resistance with Feedback of Feedback Transconductance Amplifier formula is defined as the measure of the opposition to current flow (impedance), both static (resistance) and dynamic (reactance), into the load network being connected that is internal to the electrical source is calculated using Output Resistance of Current Amplifier = (1+Open Loop Gain of an Operational Amplifier*Feedback Factor)*Output Resistance. To calculate Output Resistance with Feedback of Feedback Transconductance Amplifier, you need Open Loop Gain of an Operational Amplifier (A), Feedback Factor (β) & Output Resistance (R_o). With our tool, you need to enter the respective value for Open Loop Gain of an Operational Amplifier, Feedback Factor & Output Resistance 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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