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Input Bias Current of Differential Amplifier Formula

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Input Bias Current is the average of input current in the operational amplifier. Check FAQs

I Bias = \frac{i}{2 \cdot (β + 1)}

I_Bias - Input Bias Current?i - Current?β - Common Emitter Current Gain?

Input Bias Current of Differential Amplifier Example

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Here is how the Input Bias Current of Differential Amplifier equation looks like with Values.

Here is how the Input Bias Current of Differential Amplifier equation looks like with Units.

Here is how the Input Bias Current of Differential Amplifier equation looks like.

5.3922 = \frac{550}{2 \cdot (50 + 1)}

5.3922mA = \frac{550mA}{2 \cdot (50 + 1)}

5.3922 = \frac{550}{2 \cdot (50 + 1)}

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Input Bias Current of Differential Amplifier Solution

Follow our step by step solution on how to calculate Input Bias Current of Differential Amplifier?

FIRST Step Consider the formula

I Bias = \frac{i}{2 \cdot (β + 1)}

Next Step Substitute values of Variables

∴

I Bias = \frac{550mA}{2 \cdot (50 + 1)}

Next Step Convert Units

∴

I Bias = \frac{0.55A}{2 \cdot (50 + 1)}

Next Step Prepare to Evaluate

∴

I Bias = \frac{0.55}{2 \cdot (50 + 1)}

Next Step Evaluate

∴

I Bias = 0.0053921568627451A

Next Step Convert to Output's Unit

∴

I Bias = 5.3921568627451mA

LAST Step Rounding Answer

∴

I Bias = 5.3922mA

Input Bias Current of Differential Amplifier Formula Elements

Variables

Input Bias Current

Input Bias Current is the average of input current in the operational amplifier.

Symbol: I_Bias

Measurement: Electric CurrentUnit: mA

Note: Value can be positive or negative.

Formulas to find Input Bias Current

Current

Current is the rate of flow of charge through a conducting material.

Symbol: i

Measurement: Electric CurrentUnit: mA

Note: Value can be positive or negative.

Formulas to find Current

Common Emitter Current Gain

Common Emitter Current Gain is defined as the ratio of change in output current divided by change in input current.

Symbol: β

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Common Emitter Current Gain

Other formulas in Current and Voltage category

Go Maximum Input Common-Mode Range Voltage of BJT Differential Amplifier

V cm = V i + (α \cdot 0.5 \cdot i \cdot R C)

Go First Emitter Current of BJT Differential Amplifier

i E1 = \frac{i}{1 + e^{\frac{- V id}{V th}}}

Go First Collector Current of BJT Differential Amplifier

i C1 = \frac{α \cdot i}{1 + e^{\frac{- V id}{V th}}}

Go Collector Current of BJT Differential Amplifier given Emitter Current

i c = α \cdot i E

How to Evaluate Input Bias Current of Differential Amplifier?

Input Bias Current of Differential Amplifier evaluator uses Input Bias Current = Current/(2*(Common Emitter Current Gain+1)) to evaluate the Input Bias Current, The input bias current of differential amplifier formula is defined as the average of the currents into the two input terminals with the output at a specified level. It is expressed in units of amperes. The input circuitry of all op-amps requires a certain amount of bias current for proper operation. Input Bias Current is denoted by I_Bias symbol.

How to evaluate Input Bias Current of Differential Amplifier using this online evaluator? To use this online evaluator for Input Bias Current of Differential Amplifier, enter Current (i) & Common Emitter Current Gain (β) and hit the calculate button.

FAQs on Input Bias Current of Differential Amplifier

What is the formula to find Input Bias Current of Differential Amplifier?

The formula of Input Bias Current of Differential Amplifier is expressed as Input Bias Current = Current/(2*(Common Emitter Current Gain+1)). Here is an example- 5392.157 = 550/(2*(50+1)).

How to calculate Input Bias Current of Differential Amplifier?

With Current (i) & Common Emitter Current Gain (β) we can find Input Bias Current of Differential Amplifier using the formula - Input Bias Current = Current/(2*(Common Emitter Current Gain+1)).

Can the Input Bias Current of Differential Amplifier be negative?

Yes, the Input Bias Current of Differential Amplifier, measured in Electric Current can be negative.

Which unit is used to measure Input Bias Current of Differential Amplifier?

Input Bias Current of Differential Amplifier is usually measured using the Milliampere[mA] for Electric Current. Ampere[mA], Microampere[mA], Centiampere[mA] are the few other units in which Input Bias Current of Differential Amplifier can be measured.

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Input Bias Current of Differential Amplifier Formula

Input Bias Current of Differential Amplifier Example

Input Bias Current of Differential Amplifier Solution

Input Bias Current of Differential Amplifier Formula Elements

Other formulas in Current and Voltage category

How to Evaluate Input Bias Current of Differential Amplifier?

FAQs on Input Bias Current of Differential Amplifier

Variable Name