Input Offset Voltage of MOS Differential Amplifier Calculator

✖Output DC offset voltage between two output terminals (or the output terminal and ground for circuits with one output) when the input terminal(s) are grounded.ⓘ Output DC Offset Voltage [V_o]			+10% -10%
✖Differential Gain is the gain of the amplifier when a differential input is supplied i.e. input 1 is not equal to input 2.ⓘ Differential Gain [A_d]			+10% -10%

✖Input offset voltage is the voltage that must be applied between the two input terminals of the op-amp to obtain zero volts at the output.ⓘ Input Offset Voltage of MOS Differential Amplifier [V_os]

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Input Offset Voltage of MOS Differential Amplifier

Formula

`"V"_{"os"} = "V"_{"o"}/"A"_{"d"}`

Example

`"3.54V"="24.78V"/"7"`

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Input Offset Voltage of MOS Differential Amplifier Solution

STEP 0: Pre-Calculation Summary

Formula Used

Input Offset Voltage = Output DC Offset Voltage/Differential Gain
V_os = V_o/A_d
This formula uses 3 Variables

Variables Used

Input Offset Voltage - (Measured in Volt) - Input offset voltage is the voltage that must be applied between the two input terminals of the op-amp to obtain zero volts at the output.
Output DC Offset Voltage - (Measured in Volt) - Output DC offset voltage between two output terminals (or the output terminal and ground for circuits with one output) when the input terminal(s) are grounded.
Differential Gain - Differential Gain is the gain of the amplifier when a differential input is supplied i.e. input 1 is not equal to input 2.

STEP 1: Convert Input(s) to Base Unit

Output DC Offset Voltage: 24.78 Volt --> 24.78 Volt No Conversion Required
Differential Gain: 7 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

V_os = V_o/A_d --> 24.78/7

Evaluating ... ...

V_os = 3.54

STEP 3: Convert Result to Output's Unit

3.54 Volt --> No Conversion Required

FINAL ANSWER

3.54 Volt <-- Input Offset Voltage

(Calculation completed in 00.004 seconds)

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Birsa Institute of Technology (BIT), Sindri

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< 9 Differential Configuration Calculators

Differential Voltage Gain in MOS Differential Amplifier

Go Differential Gain = Transconductance*(1/(Common Emitter Current Gain*Resistance of Primary Winding in Secondary)+(1/(1/(Common Emitter Current Gain*Resistance of Secondary Winding in Primary))))

Total Input Offset Voltage of MOS Differential Amplifier given Saturation Current

Go Input Offset Voltage = sqrt((Change in Collector Resistance/Collector Resistance)^2+(Saturation Current for DC/Saturation Current)^2)

Minimum Input Common-Mode Range of MOS Differential Amplifier

Go Common-Mode Range = Threshold Voltage+Effective Voltage+Voltage between Gate and Source-Load Voltage

Input Offset Voltage of MOS Differential Amplifier given Saturation Current

Go Input Offset Voltage = Threshold Voltage*(Saturation Current for DC/Saturation Current)

Input Offset Voltage of MOS Differential Amplifier when Aspect Ratio Mismatches

Go Input Offset Voltage = (Effective Voltage/2)*(Aspect Ratio/Aspect Ratio 1)

Maximum Input Common-Mode Range of MOS Differential Amplifier

Go Common-Mode Range = Threshold Voltage+Load Voltage-(1/2*Load Resistance)

Input Voltage of MOS Differential Amplifier on Small-Signal Operation

Go Input Voltage = Common-Mode DC Voltage+(1/2*Differential Input Signal)

Input Offset Voltage of MOS Differential Amplifier

Go Input Offset Voltage = Output DC Offset Voltage/Differential Gain

Transconductance of MOS Differential Amplifier on Small-Signal Operation

Go Transconductance = Total Current/Effective Voltage

Input Offset Voltage of MOS Differential Amplifier Formula

Input Offset Voltage = Output DC Offset Voltage/Differential Gain
V_os = V_o/A_d

Why is input offset voltage important?

When used in amplifiers of sensors, etc., the input offset voltage of op-amp results in an error of sensor detection sensitivity. To keep sensing errors below a specified tolerance level, it is necessary to select an op-amp with low input offset voltage.

How to Calculate Input Offset Voltage of MOS Differential Amplifier?

Input Offset Voltage of MOS Differential Amplifier calculator uses Input Offset Voltage = Output DC Offset Voltage/Differential Gain to calculate the Input Offset Voltage, The Input Offset Voltage of MOS Differential Amplifier formula is defined as the voltage that must be applied between the two input terminals of the op-amp to obtain zero volts at the output. Ideally, the output of the op-amp should be at zero volts when the inputs are grounded. In reality, the input terminals are at slightly different dc potentials. Input Offset Voltage is denoted by V_os symbol.

How to calculate Input Offset Voltage of MOS Differential Amplifier using this online calculator? To use this online calculator for Input Offset Voltage of MOS Differential Amplifier, enter Output DC Offset Voltage (V_o) & Differential Gain (A_d) and hit the calculate button. Here is how the Input Offset Voltage of MOS Differential Amplifier calculation can be explained with given input values -> 1.857143 = 24.78/7.

FAQ

What is Input Offset Voltage of MOS Differential Amplifier?

The Input Offset Voltage of MOS Differential Amplifier formula is defined as the voltage that must be applied between the two input terminals of the op-amp to obtain zero volts at the output. Ideally, the output of the op-amp should be at zero volts when the inputs are grounded. In reality, the input terminals are at slightly different dc potentials and is represented as V_os = V_o/A_d or Input Offset Voltage = Output DC Offset Voltage/Differential Gain. Output DC offset voltage between two output terminals (or the output terminal and ground for circuits with one output) when the input terminal(s) are grounded & Differential Gain is the gain of the amplifier when a differential input is supplied i.e. input 1 is not equal to input 2.

How to calculate Input Offset Voltage of MOS Differential Amplifier?

The Input Offset Voltage of MOS Differential Amplifier formula is defined as the voltage that must be applied between the two input terminals of the op-amp to obtain zero volts at the output. Ideally, the output of the op-amp should be at zero volts when the inputs are grounded. In reality, the input terminals are at slightly different dc potentials is calculated using Input Offset Voltage = Output DC Offset Voltage/Differential Gain. To calculate Input Offset Voltage of MOS Differential Amplifier, you need Output DC Offset Voltage (V_o) & Differential Gain (A_d). With our tool, you need to enter the respective value for Output DC Offset Voltage & Differential Gain 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 Input Offset Voltage?

In this formula, Input Offset Voltage uses Output DC Offset Voltage & Differential Gain. We can use 3 other way(s) to calculate the same, which is/are as follows -

Input Offset Voltage = (Effective Voltage/2)*(Aspect Ratio/Aspect Ratio 1)
Input Offset Voltage = Threshold Voltage*(Saturation Current for DC/Saturation Current)
Input Offset Voltage = sqrt((Change in Collector Resistance/Collector Resistance)^2+(Saturation Current for DC/Saturation Current)^2)

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