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Common-Mode Rejection Ratio of MOSFET Formula

GoCommon-Mode Rejection Ratio of MOSFET given Resistance Formula

GoCommon-Mode Rejection Ratio of MOS with Current-Mirror Load Formula

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Common Mode Rejection Ratio is a measure of the ability of an electronic circuit, such as an amplifier, to reject noise and interference that is common to both the input signals. Check FAQs

CMRR = mod \underset{̲}{u} s (\frac{A v}{A cm})

CMRR - Common Mode Rejection Ratio?A_v - Voltage Gain?A_cm - Common Mode Gain?

Common-Mode Rejection Ratio of MOSFET Example

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Here is how the Common-Mode Rejection Ratio of MOSFET equation looks like with Values.

Here is how the Common-Mode Rejection Ratio of MOSFET equation looks like with Units.

Here is how the Common-Mode Rejection Ratio of MOSFET equation looks like.

0.0788 = mod \underset{̲}{u} s (\frac{0.026}{0.33})

0.0788 = mod \underset{̲}{u} s (\frac{0.026}{0.33})

0.0788 = mod \underset{̲}{u} s (\frac{0.026}{0.33})

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Common-Mode Rejection Ratio of MOSFET Solution

Follow our step by step solution on how to calculate Common-Mode Rejection Ratio of MOSFET?

FIRST Step Consider the formula

CMRR = mod \underset{̲}{u} s (\frac{A v}{A cm})

Next Step Substitute values of Variables

∴

CMRR = mod \underset{̲}{u} s (\frac{0.026}{0.33})

Next Step Prepare to Evaluate

∴

CMRR = mod \underset{̲}{u} s (\frac{0.026}{0.33})

Next Step Evaluate

∴

CMRR = 0.0787878787878788

LAST Step Rounding Answer

∴

CMRR = 0.0788

Common-Mode Rejection Ratio of MOSFET Formula Elements

Variables

Functions

Common Mode Rejection Ratio

Common Mode Rejection Ratio is a measure of the ability of an electronic circuit, such as an amplifier, to reject noise and interference that is common to both the input signals.

Symbol: CMRR

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Common Mode Rejection Ratio

Voltage Gain

Voltage gain is a measure of the amplification of an electrical signal by an amplifier . It is the ratio of the output voltage to the input voltage of the circuit, expressed in decibels (dB).

Symbol: A_v

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Voltage Gain

Common Mode Gain

Common mode gain dB refers to the degree to which an amplifier or electronic circuit amplifies a signal that is common to both the input and output terminals of the circuit.

Symbol: A_cm

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Common Mode Gain

modulus

Modulus of a number is the remainder when that number is divided by another number.

Syntax: modulus

Other Formulas to find Common Mode Rejection Ratio

Go Common-Mode Rejection Ratio of MOSFET given Resistance

CMRR = \frac{2 \cdot g m \cdot R out}{\frac{ΔR D}{R d}}

Go Common-Mode Rejection Ratio of MOS with Current-Mirror Load

CMRR = g m \cdot (\frac{1}{\frac{1}{R' 1} + \frac{1}{R' 2}}) \cdot (2 \cdot Δg m \cdot R fo)

Go Common-Mode Rejection Ratio of MOS with Current-Mirror Load when Resistance at Drains are Equal

CMRR = (g m \cdot R fo) \cdot (g m \cdot R s)

Go Common-Mode Rejection Ratio of MOSFET when Transconductance Mismatches

CMRR = \frac{2 \cdot g m \cdot R out}{\frac{Δg m}{g m}}

Other formulas in Common Mode Rejection Ratio (CMRR) category

Go Common-Mode Signal of MOSFET given Resistance

V cin = \frac{2 \cdot R out \cdot V out}{R L}

Go Common-Mode Rejection Ratio of MOSFET in Decibels

CMRR db = mod \underset{̲}{u} s (20 \cdot \log 10 (\frac{A v}{A cm(db)}))

Go Common-Mode Signal of MOSFET given Output Voltage at Drain Q2

v o1 = \frac{2 \cdot R out \cdot V cin}{R d}

Go Common-Mode Input Signal of MOSFET

V cin = (\frac{I t}{g m}) + (2 \cdot I t \cdot R tl)

How to Evaluate Common-Mode Rejection Ratio of MOSFET?

Common-Mode Rejection Ratio of MOSFET evaluator uses Common Mode Rejection Ratio = modulus((Voltage Gain)/(Common Mode Gain)) to evaluate the Common Mode Rejection Ratio, The Common-mode rejection ratio of MOSFET formula is defined as refers to the amplification given to signals that appear on both inputs relative to the common (typically ground). This means the output is unaffected by voltages that are common to both inputs (i.e., no difference). Common Mode Rejection Ratio is denoted by CMRR symbol.

How to evaluate Common-Mode Rejection Ratio of MOSFET using this online evaluator? To use this online evaluator for Common-Mode Rejection Ratio of MOSFET, enter Voltage Gain (A_v) & Common Mode Gain (A_cm) and hit the calculate button.

FAQs on Common-Mode Rejection Ratio of MOSFET

What is the formula to find Common-Mode Rejection Ratio of MOSFET?

The formula of Common-Mode Rejection Ratio of MOSFET is expressed as Common Mode Rejection Ratio = modulus((Voltage Gain)/(Common Mode Gain)). Here is an example- 0.078788 = modulus((0.026)/(0.33)).

How to calculate Common-Mode Rejection Ratio of MOSFET?

With Voltage Gain (A_v) & Common Mode Gain (A_cm) we can find Common-Mode Rejection Ratio of MOSFET using the formula - Common Mode Rejection Ratio = modulus((Voltage Gain)/(Common Mode Gain)). This formula also uses Modulus (modulus) function(s).

What are the other ways to Calculate Common Mode Rejection Ratio?

Here are the different ways to Calculate Common Mode Rejection Ratio-

Common Mode Rejection Ratio=(2*Transconductance*Output Resistance)/(Change in Drain Resistance/Drain Resistance)
Common Mode Rejection Ratio=Transconductance*(1/(1/Primary Winding Resistance in Secondary+1/Secondary Winding Resistance in Primary))*(2*Change in Transconductance*Finite Output Resistance)
Common Mode Rejection Ratio=(Transconductance*Finite Output Resistance)*(Transconductance*Source Resistance)

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Common-Mode Rejection Ratio of MOSFET Formula

​GoCommon-Mode Rejection Ratio of MOSFET given Resistance Formula

​GoCommon-Mode Rejection Ratio of MOS with Current-Mirror Load Formula

Common-Mode Rejection Ratio of MOSFET Example

Common-Mode Rejection Ratio of MOSFET Solution

Common-Mode Rejection Ratio of MOSFET Formula Elements

Other Formulas to find Common Mode Rejection Ratio

Other formulas in Common Mode Rejection Ratio (CMRR) category

How to Evaluate Common-Mode Rejection Ratio of MOSFET?

FAQs on Common-Mode Rejection Ratio of MOSFET

Variable Name

GoCommon-Mode Rejection Ratio of MOSFET given Resistance Formula

GoCommon-Mode Rejection Ratio of MOS with Current-Mirror Load Formula