Reference Current of IC Amplifier Calculator

✖Output Current is the current the amplifier draws from the signal source.ⓘ Output Current [I_o]			+10% -10%
✖Aspect Ratio is the ratio of the width of the channel to the length of the channel.ⓘ Aspect Ratio [WL]			+10% -10%
✖Aspect ratio 1 is the ratio of the width of the channel to the length of the channel of a conductor 1 in the circuit.ⓘ Aspect Ratio 1 [WL₁]			+10% -10%

✖A reference current is just a stable source of current that does not fluctuate over temperature, supply voltages or loads.ⓘ Reference Current of IC Amplifier [I_ref]

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Formula

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Reference Current of IC Amplifier

Formula

`"I"_{"ref"} = "I"_{"o"}*("WL"/"WL"_{"1"})`

Example

`"7.5mA"="5mA"*("15"/"10")`

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Reference Current of IC Amplifier Solution

STEP 0: Pre-Calculation Summary

Formula Used

Reference Current = Output Current*(Aspect Ratio/Aspect Ratio 1)
I_ref = I_o*(WL/WL₁)
This formula uses 4 Variables

Variables Used

Reference Current - (Measured in Ampere) - A reference current is just a stable source of current that does not fluctuate over temperature, supply voltages or loads.
Output Current - (Measured in Ampere) - Output Current is the current the amplifier draws from the signal source.
Aspect Ratio - Aspect Ratio is the ratio of the width of the channel to the length of the channel.
Aspect Ratio 1 - Aspect ratio 1 is the ratio of the width of the channel to the length of the channel of a conductor 1 in the circuit.

STEP 1: Convert Input(s) to Base Unit

Output Current: 5 Milliampere --> 0.005 Ampere (Check conversion here)
Aspect Ratio: 15 --> No Conversion Required
Aspect Ratio 1: 10 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

I_ref = I_o*(WL/WL₁) --> 0.005*(15/10)

Evaluating ... ...

I_ref = 0.0075

STEP 3: Convert Result to Output's Unit

0.0075 Ampere -->7.5 Milliampere (Check conversion here)

FINAL ANSWER

7.5 Milliampere <-- Reference Current

(Calculation completed in 00.004 seconds)

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Created by Payal Priya

Birsa Institute of Technology (BIT), Sindri

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Vishwakarma Government Engineering College (VGEC), Ahmedabad

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< 10+ IC Amplifiers Calculators

Output Resistance of Widlar Current Source

Go Output Resistance of Widlar Current Source = (1+Transconductance)*((1/Emitter Resistance)+(1/Small-Signal Input Resistance b/w Base-Emitter))*Finite Output Resistance

Emitter Resistance in Widlar Current Source

Go Emitter Resistance = (Threshold Voltage/Output Current)*log10(Reference Current/Output Current)

Output Current

Go Output Current given Reference Current = Reference Current*(Current in Transistor 2/Current in Transistor 1)

Output Resistance of Wilson MOS Mirror

Go Output Resistance = (Transconductance 3*Finite Output Resistance 3)*Finite Output Resistance 2

Output Resistance of Wilson Current Mirror

Go Output Resistance of Wilson Current Mirror = (Transistor Current Gain 1*Finite Output Resistance 3)/2

Reference Current of IC Amplifier

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

Output Current of Wilson Current Mirror

Go Output Current = Reference Current*(1/(1+(2/Transistor Current Gain^2)))

Finite Output Resistance of IC Amplifier

Go Finite Output Resistance = Change in Output Voltage/Change in Current

Reference Current of Wilson Current Mirror

Go Reference Current = (1+2/Transistor Current Gain^2)*Output Current

Intrinsic Gain of IC Amplifier

Go Intrinsic Gain = 2*Early Voltage/Overdrive Voltage

Reference Current of IC Amplifier Formula

Reference Current = Output Current*(Aspect Ratio/Aspect Ratio 1)
I_ref = I_o*(WL/WL₁)

What is meant by IC?

Integrated circuit (IC), also called microelectronic circuit, microchip, or chip, an assembly of electronic components, fabricated as a single unit, in which miniaturized active devices (e.g., transistors and diodes) and passive devices (e.g., capacitors and resistors).

How to Calculate Reference Current of IC Amplifier?

Reference Current of IC Amplifier calculator uses Reference Current = Output Current*(Aspect Ratio/Aspect Ratio 1) to calculate the Reference Current, The Reference current of IC amplifier formula is defined as stable source of current that does not fluctuate over temperature, supply voltages, or loads. Reference Current is denoted by I_ref symbol.

How to calculate Reference Current of IC Amplifier using this online calculator? To use this online calculator for Reference Current of IC Amplifier, enter Output Current (I_o), Aspect Ratio (WL) & Aspect Ratio 1 (WL₁) and hit the calculate button. Here is how the Reference Current of IC Amplifier calculation can be explained with given input values -> 7500 = 0.005*(15/10).

FAQ

What is Reference Current of IC Amplifier?

The Reference current of IC amplifier formula is defined as stable source of current that does not fluctuate over temperature, supply voltages, or loads and is represented as I_ref = I_o*(WL/WL₁) or Reference Current = Output Current*(Aspect Ratio/Aspect Ratio 1). Output Current is the current the amplifier draws from the signal source, Aspect Ratio is the ratio of the width of the channel to the length of the channel & Aspect ratio 1 is the ratio of the width of the channel to the length of the channel of a conductor 1 in the circuit.

How to calculate Reference Current of IC Amplifier?

The Reference current of IC amplifier formula is defined as stable source of current that does not fluctuate over temperature, supply voltages, or loads is calculated using Reference Current = Output Current*(Aspect Ratio/Aspect Ratio 1). To calculate Reference Current of IC Amplifier, you need Output Current (I_o), Aspect Ratio (WL) & Aspect Ratio 1 (WL₁). With our tool, you need to enter the respective value for Output Current, Aspect Ratio & Aspect Ratio 1 and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Reference Current?

In this formula, Reference Current uses Output Current, Aspect Ratio & Aspect Ratio 1. We can use 1 other way(s) to calculate the same, which is/are as follows -

Reference Current = (1+2/Transistor Current Gain^2)*Output Current

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