Reference Current of BJT Current Mirror Calculator

✖Supply Voltage is the input voltage source that flows through the BJT.ⓘ Supply Voltage [V_DD]			+10% -10%
✖Base-Emitter Voltage is the forward voltage between the base and emitter of the transistor.ⓘ Base-Emitter Voltage [V_BE]			+10% -10%
✖Resistance is a measure of the opposition to current flow in an electrical circuit. Its S.I unit is ohm.ⓘ Resistance [R]			+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 BJT Current Mirror [I_ref]

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Formula

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Reference Current of BJT Current Mirror

Formula

`"I"_{"ref"} = ("V"_{"DD"}-"V"_{"BE"})/"R"`

Example

`"-2.345133mA"=("2.5V"-"5.15V")/"1.13kΩ"`

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Reference Current of BJT Current Mirror Solution

STEP 0: Pre-Calculation Summary

Formula Used

Reference Current = (Supply Voltage-Base-Emitter Voltage)/Resistance
I_ref = (V_DD-V_BE)/R
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.
Supply Voltage - (Measured in Volt) - Supply Voltage is the input voltage source that flows through the BJT.
Base-Emitter Voltage - (Measured in Volt) - Base-Emitter Voltage is the forward voltage between the base and emitter of the transistor.
Resistance - (Measured in Ohm) - Resistance is a measure of the opposition to current flow in an electrical circuit. Its S.I unit is ohm.

STEP 1: Convert Input(s) to Base Unit

Supply Voltage: 2.5 Volt --> 2.5 Volt No Conversion Required
Base-Emitter Voltage: 5.15 Volt --> 5.15 Volt No Conversion Required
Resistance: 1.13 Kilohm --> 1130 Ohm (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

I_ref = (V_DD-V_BE)/R --> (2.5-5.15)/1130

Evaluating ... ...

I_ref = -0.00234513274336283

STEP 3: Convert Result to Output's Unit

-0.00234513274336283 Ampere -->-2.34513274336283 Milliampere (Check conversion here)

FINAL ANSWER

-2.34513274336283 ≈ -2.345133 Milliampere <-- Reference Current

(Calculation completed in 00.004 seconds)

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Created by Payal Priya

Birsa Institute of Technology (BIT), Sindri

Payal Priya has created this Calculator and 600+ more calculators!

Verified by Anshika Arya

National Institute Of Technology (NIT), Hamirpur

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< 14 Base Current Calculators

Base Current using Saturation Current in DC

Go Base Current = (Saturation Current/Common Emitter Current Gain)*e^(Base-Collector Voltage/Thermal Voltage)+Saturation Vapour Pressure*e^(Base-Collector Voltage/Thermal Voltage)

Saturation Current using Doping Concentration

Go Saturation Current = (Cross-section Area of Base-Emitter Junction*[Charge-e]*Electron Diffusivity*(Intrinsic Carrier Concentration)^2)/(Width of Base Junction*Doping Concentration of Base)

Short Circuit Current Gain of BJT

Go Short-Circuit Current Gain = (Common-Emitter Current Gain at Low Frequency)/(1+Complex Frequency Variable*(Emitter-Base Capacitance+Collector-Base Junction Capacitance)*Input Resistance)

Drain Current given Device Parameter

Go Drain Current = 1/2*Transconductance*Aspect Ratio*(Effective Voltage-Threshold Voltage)^2*(1+Device Parameter*Voltage between Drain and Source)

Base Current 2 of BJT

Go Base Current = (Saturation Current/Common Emitter Current Gain)*(e^(Base-Emitter Voltage/Thermal Voltage))

Base Current of PNP Transistor using Saturation Current

Go Base Current = (Saturation Current/Common Emitter Current Gain)*e^(Base-Emitter Voltage/Thermal Voltage)

Reference Current of BJT Mirror

Go Reference Current = Collector Current+(2*Collector Current)/Common Emitter Current Gain

Reference Current of BJT Current Mirror

Go Reference Current = (Supply Voltage-Base-Emitter Voltage)/Resistance

Reference Current of BJT Mirror given Collector Current

Go Reference Current = Collector Current*(1+2/Common Emitter Current Gain)

Base Current of PNP Transistor given Emitter Current

Go Base Current = Emitter Current/(Common Emitter Current Gain+1)

Base Current of PNP Transistor using Collector Current

Go Base Current = Collector Current/Common Emitter Current Gain

Base Current 1 of BJT

Go Base Current = Collector Current/Common Emitter Current Gain

Base Current of PNP Transistor using Common-Base Current Gain

Go Base Current = (1-Common-Base Current Gain)*Emitter Current

Total Base Current

Go Base Current = Base Current 1+Base Current 2

Reference Current of BJT Current Mirror Formula

Reference Current = (Supply Voltage-Base-Emitter Voltage)/Resistance
I_ref = (V_DD-V_BE)/R

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 BJT Current Mirror?

Reference Current of BJT Current Mirror calculator uses Reference Current = (Supply Voltage-Base-Emitter Voltage)/Resistance to calculate the Reference Current, The Reference current of BJT 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 calculate Reference Current of BJT Current Mirror using this online calculator? To use this online calculator for Reference Current of BJT Current Mirror, enter Supply Voltage (V_DD), Base-Emitter Voltage (V_BE) & Resistance (R) and hit the calculate button. Here is how the Reference Current of BJT Current Mirror calculation can be explained with given input values -> -2345.132743 = (2.5-5.15)/1130.

FAQ

What is Reference Current of BJT Current Mirror?

The Reference current of BJT current mirror formula is defined as a stable source of current that does not fluctuate over temperature, supply voltages, or loads and is represented as I_ref = (V_DD-V_BE)/R or Reference Current = (Supply Voltage-Base-Emitter Voltage)/Resistance. Supply Voltage is the input voltage source that flows through the BJT, Base-Emitter Voltage is the forward voltage between the base and emitter of the transistor & Resistance is a measure of the opposition to current flow in an electrical circuit. Its S.I unit is ohm.

How to calculate Reference Current of BJT Current Mirror?

The Reference current of BJT current mirror formula is defined as a stable source of current that does not fluctuate over temperature, supply voltages, or loads is calculated using Reference Current = (Supply Voltage-Base-Emitter Voltage)/Resistance. To calculate Reference Current of BJT Current Mirror, you need Supply Voltage (V_DD), Base-Emitter Voltage (V_BE) & Resistance (R). With our tool, you need to enter the respective value for Supply Voltage, Base-Emitter Voltage & Resistance 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 Supply Voltage, Base-Emitter Voltage & Resistance. We can use 2 other way(s) to calculate the same, which is/are as follows -

Reference Current = Collector Current*(1+2/Common Emitter Current Gain)
Reference Current = Collector Current+(2*Collector Current)/Common Emitter Current Gain

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