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Reference Current of Wilson Current Mirror Formula

GoReference Current of IC Amplifier Formula

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A reference current is just a stable source of current that does not fluctuate over temperature, supply voltages or loads. Check FAQs

I ref = (1 + \frac{2}{β^{2}}) \cdot I o

I_ref - Reference Current?β - Transistor Current Gain?I_o - Output Current?

Reference Current of Wilson Current Mirror Example

With values

With units

Only example

Here is how the Reference Current of Wilson Current Mirror equation looks like with Values.

Here is how the Reference Current of Wilson Current Mirror equation looks like with Units.

Here is how the Reference Current of Wilson Current Mirror equation looks like.

7.5 = (1 + \frac{2}{2^{2}}) \cdot 5

7.5mA = (1 + \frac{2}{2^{2}}) \cdot 5mA

7.5 = (1 + \frac{2}{2^{2}}) \cdot 5

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Reference Current of Wilson Current Mirror Solution

Follow our step by step solution on how to calculate Reference Current of Wilson Current Mirror?

FIRST Step Consider the formula

I ref = (1 + \frac{2}{β^{2}}) \cdot I o

Next Step Substitute values of Variables

∴

I ref = (1 + \frac{2}{2^{2}}) \cdot 5mA

Next Step Convert Units

∴

I ref = (1 + \frac{2}{2^{2}}) \cdot 0.005A

Next Step Prepare to Evaluate

∴

I ref = (1 + \frac{2}{2^{2}}) \cdot 0.005

Next Step Evaluate

∴

I ref = 0.0075A

LAST Step Convert to Output's Unit

∴

I ref = 7.5mA

Reference Current of Wilson Current Mirror Formula Elements

Variables

Reference Current

A reference current is just a stable source of current that does not fluctuate over temperature, supply voltages or loads.

Symbol: I_ref

Measurement: Electric CurrentUnit: mA

Note: Value can be positive or negative.

Formulas to find Reference Current

Transistor Current Gain

Transistor current gain is highly influenced by two factors: the width of the base region, W, and the relative dopings of the base region and the emitter region.

Symbol: β

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Transistor Current Gain

Output Current

Output Current is the current the amplifier draws from the signal source.

Symbol: I_o

Measurement: Electric CurrentUnit: mA

Note: Value should be greater than 0.

Formulas to find Output Current

Other Formulas to find Reference Current

Go Reference Current of IC Amplifier

I ref = I o \cdot (\frac{WL}{WL 1})

Other formulas in IC Amplifiers category

Go Finite Output Resistance of IC Amplifier

R fo = \frac{ΔV o}{ΔI o}

Go Output Current

I out = I ref \cdot (\frac{I t2}{I t1})

Go Intrinsic Gain of IC Amplifier

G i = 2 \cdot \frac{V e}{V ov}

Go Output Current of Wilson Current Mirror

I o = I ref \cdot (\frac{1}{1 + (\frac{2}{β^{2}})})

How to Evaluate Reference Current of Wilson Current Mirror?

Reference Current of Wilson Current Mirror evaluator uses Reference Current = (1+2/Transistor Current Gain^2)*Output Current to evaluate the Reference Current, The Reference current of Wilson current mirror formula is defined as a stable source of current that does not fluctuate over temperature, supply voltages, or loads. Reference Current is denoted by I_ref symbol.

How to evaluate Reference Current of Wilson Current Mirror using this online evaluator? To use this online evaluator for Reference Current of Wilson Current Mirror, enter Transistor Current Gain (β) & Output Current (I_o) and hit the calculate button.

FAQs on Reference Current of Wilson Current Mirror

What is the formula to find Reference Current of Wilson Current Mirror?

The formula of Reference Current of Wilson Current Mirror is expressed as Reference Current = (1+2/Transistor Current Gain^2)*Output Current. Here is an example- 7500 = (1+2/2^2)*0.005.

How to calculate Reference Current of Wilson Current Mirror?

With Transistor Current Gain (β) & Output Current (I_o) we can find Reference Current of Wilson Current Mirror using the formula - Reference Current = (1+2/Transistor Current Gain^2)*Output Current.

What are the other ways to Calculate Reference Current?

Here are the different ways to Calculate Reference Current-

Reference Current=Output Current*(Aspect Ratio/Aspect Ratio 1)

Can the Reference Current of Wilson Current Mirror be negative?

Yes, the Reference Current of Wilson Current Mirror, measured in Electric Current can be negative.

Which unit is used to measure Reference Current of Wilson Current Mirror?

Reference Current of Wilson Current Mirror is usually measured using the Milliampere[mA] for Electric Current. Ampere[mA], Microampere[mA], Centiampere[mA] are the few other units in which Reference Current of Wilson Current Mirror can be measured.

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