Input Bias Current Calculator

✖Input bias current 1 refers to the small electrical current that flows into an operational amplifier (op-amp) or other electronic device's input terminal when no signal is present.ⓘ Input Bias Current 1 [I_b1]			+10% -10%
✖Input bias current 2 refers to the small electrical current that flows into an operational amplifier (op-amp) or other electronic device's input terminal when no signal is present.ⓘ Input Bias Current 2 [I_b2]			+10% -10%

✖DC bias current is the constant current that flows through a circuit or device to establish a certain operating point or bias point.ⓘ Input Bias Current [I_b]

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Input Bias Current Solution

STEP 0: Pre-Calculation Summary

Formula Used

DC Bias Current = (Input Bias Current 1+Input Bias Current 2)/2
I_b = (I_b1+I_b2)/2
This formula uses 3 Variables

Variables Used

DC Bias Current - (Measured in Ampere) - DC bias current is the constant current that flows through a circuit or device to establish a certain operating point or bias point.
Input Bias Current 1 - (Measured in Ampere) - Input bias current 1 refers to the small electrical current that flows into an operational amplifier (op-amp) or other electronic device's input terminal when no signal is present.
Input Bias Current 2 - (Measured in Ampere) - Input bias current 2 refers to the small electrical current that flows into an operational amplifier (op-amp) or other electronic device's input terminal when no signal is present.

STEP 1: Convert Input(s) to Base Unit

Input Bias Current 1: 12.58 Milliampere --> 0.01258 Ampere (Check conversion here)
Input Bias Current 2: 17.76 Milliampere --> 0.01776 Ampere (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

I_b = (I_b1+I_b2)/2 --> (0.01258+0.01776)/2

Evaluating ... ...

I_b = 0.01517

STEP 3: Convert Result to Output's Unit

0.01517 Ampere -->15.17 Milliampere (Check conversion here)

FINAL ANSWER

15.17 Milliampere <-- DC Bias Current

(Calculation completed in 00.020 seconds)

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Credits

Created by Prahalad Singh

Jaipur Engineering College and Research Centre (JECRC), Jaipur

Prahalad Singh has created this Calculator and 100+ more calculators!

Verified by Payal Priya

Birsa Institute of Technology (BIT), Sindri

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< Biasing Calculators

DC Bias Current of MOSFET

LaTeX Go DC Bias Current = 1/2*Transconductance Parameter*(Gate-Source Voltage-Threshold Voltage)^2

DC Bias Output Voltage at Drain

LaTeX Go Output Voltage = Supply Voltage-Load Resistance*DC Bias Current

DC Bias Current of MOSFET using Overdrive Voltage

LaTeX Go DC Bias Current = 1/2*Transconductance Parameter*Effective Voltage^2

Input Bias Current

LaTeX Go DC Bias Current = (Input Bias Current 1+Input Bias Current 2)/2

Input Bias Current Formula

LaTeX Go

DC Bias Current = (Input Bias Current 1+Input Bias Current 2)/2
I_b = (I_b1+I_b2)/2

What is Condition for Input Bias Current

It should be emphasized that the input bias currents are independent of the fact that a real op amp has finite (though large) input resistance. The op-amp manufacturer usually specifies the average value of currents as well as their expected difference.

How to Calculate Input Bias Current?

Input Bias Current calculator uses DC Bias Current = (Input Bias Current 1+Input Bias Current 2)/2 to calculate the DC Bias Current, Input Bias Current is the average of the input current in the operational amplifier. It is denoted as IB. DC Bias Current is denoted by I_b symbol.

How to calculate Input Bias Current using this online calculator? To use this online calculator for Input Bias Current, enter Input Bias Current 1 (I_b1) & Input Bias Current 2 (I_b2) and hit the calculate button. Here is how the Input Bias Current calculation can be explained with given input values -> 15170 = (0.01258+0.01776)/2.

FAQ

What is Input Bias Current?

Input Bias Current is the average of the input current in the operational amplifier. It is denoted as IB and is represented as I_b = (I_b1+I_b2)/2 or DC Bias Current = (Input Bias Current 1+Input Bias Current 2)/2. Input bias current 1 refers to the small electrical current that flows into an operational amplifier (op-amp) or other electronic device's input terminal when no signal is present & Input bias current 2 refers to the small electrical current that flows into an operational amplifier (op-amp) or other electronic device's input terminal when no signal is present.

How to calculate Input Bias Current?

Input Bias Current is the average of the input current in the operational amplifier. It is denoted as IB is calculated using DC Bias Current = (Input Bias Current 1+Input Bias Current 2)/2. To calculate Input Bias Current, you need Input Bias Current 1 (I_b1) & Input Bias Current 2 (I_b2). With our tool, you need to enter the respective value for Input Bias Current 1 & Input Bias Current 2 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 DC Bias Current?

In this formula, DC Bias Current uses Input Bias Current 1 & Input Bias Current 2. We can use 3 other way(s) to calculate the same, which is/are as follows -

DC Bias Current = 1/2*Transconductance Parameter*Effective Voltage^2
DC Bias Current = 1/2*Transconductance Parameter*(Gate-Source Voltage-Threshold Voltage)^2
DC Bias Current = Drain Current 1+Drain Current 2

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