Input Offset Voltage of MOS Differential Amplifier when Aspect Ratio Mismatches Solution

STEP 0: Pre-Calculation Summary
Formula Used
Input Offset Voltage = (Effective Voltage/2)*(Aspect Ratio/Aspect Ratio 1)
Vos = (Vov/2)*(WL/WL1)
This formula uses 4 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.
Effective Voltage - (Measured in Volt) - Effective voltage or overdrive voltage is excess of voltage across oxide over thermal voltage is termed.
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.
STEP 1: Convert Input(s) to Base Unit
Effective Voltage: 2.5 Volt --> 2.5 Volt No Conversion Required
Aspect Ratio: 5 --> No Conversion Required
Aspect Ratio 1: 1.77 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Vos = (Vov/2)*(WL/WL1) --> (2.5/2)*(5/1.77)
Evaluating ... ...
Vos = 3.53107344632768
STEP 3: Convert Result to Output's Unit
3.53107344632768 Volt --> No Conversion Required
FINAL ANSWER
3.53107344632768 3.531073 Volt <-- Input Offset Voltage
(Calculation completed in 00.020 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 when Aspect Ratio Mismatches Formula

Input Offset Voltage = (Effective Voltage/2)*(Aspect Ratio/Aspect Ratio 1)
Vos = (Vov/2)*(WL/WL1)

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 when Aspect Ratio Mismatches?

Input Offset Voltage of MOS Differential Amplifier when Aspect Ratio Mismatches calculator uses Input Offset Voltage = (Effective Voltage/2)*(Aspect Ratio/Aspect Ratio 1) to calculate the Input Offset Voltage, The Input Offset Voltage of MOS Differential Amplifier when aspect ratio mismatches 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 Vos symbol.

How to calculate Input Offset Voltage of MOS Differential Amplifier when Aspect Ratio Mismatches using this online calculator? To use this online calculator for Input Offset Voltage of MOS Differential Amplifier when Aspect Ratio Mismatches, enter Effective Voltage (Vov), Aspect Ratio (WL) & Aspect Ratio 1 (WL1) and hit the calculate button. Here is how the Input Offset Voltage of MOS Differential Amplifier when Aspect Ratio Mismatches calculation can be explained with given input values -> 1.223092 = (2.5/2)*(5/1.77).

FAQ

What is Input Offset Voltage of MOS Differential Amplifier when Aspect Ratio Mismatches?
The Input Offset Voltage of MOS Differential Amplifier when aspect ratio mismatches 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 Vos = (Vov/2)*(WL/WL1) or Input Offset Voltage = (Effective Voltage/2)*(Aspect Ratio/Aspect Ratio 1). Effective voltage or overdrive voltage is excess of voltage across oxide over thermal voltage is termed, 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.
How to calculate Input Offset Voltage of MOS Differential Amplifier when Aspect Ratio Mismatches?
The Input Offset Voltage of MOS Differential Amplifier when aspect ratio mismatches 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 = (Effective Voltage/2)*(Aspect Ratio/Aspect Ratio 1). To calculate Input Offset Voltage of MOS Differential Amplifier when Aspect Ratio Mismatches, you need Effective Voltage (Vov), Aspect Ratio (WL) & Aspect Ratio 1 (WL1). With our tool, you need to enter the respective value for Effective Voltage, 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 Input Offset Voltage?
In this formula, Input Offset Voltage uses Effective Voltage, Aspect Ratio & Aspect Ratio 1. We can use 3 other way(s) to calculate the same, which is/are as follows -
  • Input Offset Voltage = Output DC Offset Voltage/Differential Gain
  • 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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