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Common-Mode Rejection Ratio of MOSFET in Decibels Formula

GoCommon-Mode Rejection Ratio of MOS Controlled Source Transistor Formula

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Common Mode Rejection Ratio in DB is a measure of the ability of an electronic circuit to reject common-mode signals, which are signals that appear on both input terminals of the circuit. Check FAQs

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

CMRR_db - Common Mode Rejection Ratio in DB?A_v - Voltage Gain?A_cm(db) - Common Mode Gain DB?

Common-Mode Rejection Ratio of MOSFET in Decibels Example

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

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

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

18.9351 = mod \underset{̲}{u} s (20 \cdot \log 10 (\frac{0.026}{0.23}))

18.9351dB = mod \underset{̲}{u} s (20 \cdot \log 10 (\frac{0.026}{0.23dB}))

18.9351 = mod \underset{̲}{u} s (20 \cdot \log 10 (\frac{0.026}{0.23}))

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Common-Mode Rejection Ratio of MOSFET in Decibels Solution

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

FIRST Step Consider the formula

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

Next Step Substitute values of Variables

∴

CMRR db = mod \underset{̲}{u} s (20 \cdot \log 10 (\frac{0.026}{0.23dB}))

Next Step Prepare to Evaluate

∴

CMRR db = mod \underset{̲}{u} s (20 \cdot \log 10 (\frac{0.026}{0.23}))

Next Step Evaluate

∴

CMRR db = 18.9350897609355dB

LAST Step Rounding Answer

∴

CMRR db = 18.9351dB

Common-Mode Rejection Ratio of MOSFET in Decibels Formula Elements

Variables

Functions

Common Mode Rejection Ratio in DB

Common Mode Rejection Ratio in DB is a measure of the ability of an electronic circuit to reject common-mode signals, which are signals that appear on both input terminals of the circuit.

Symbol: CMRR_db

Measurement: NoiseUnit: dB

Note: Value can be positive or negative.

Formulas to find Common Mode Rejection Ratio in DB

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 DB

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(db)

Measurement: NoiseUnit: dB

Note: Value can be positive or negative.

Formulas to find Common Mode Gain DB

log10

The common logarithm, also known as the base-10 logarithm or the decimal logarithm, is a mathematical function that is the inverse of the exponential function.

Syntax: log10(Number)

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 in DB

Go Common-Mode Rejection Ratio of MOS Controlled Source Transistor

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

Other formulas in Common Mode Rejection Ratio (CMRR) category

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 Signal of MOSFET given Resistance

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

How to Evaluate Common-Mode Rejection Ratio of MOSFET in Decibels?

Common-Mode Rejection Ratio of MOSFET in Decibels evaluator uses Common Mode Rejection Ratio in DB = modulus(20*log10((Voltage Gain)/(Common Mode Gain DB))) to evaluate the Common Mode Rejection Ratio in DB, The Common-mode rejection ratio of MOSFET in decibels formula is defined as a differential amplifier (or other devices) is a metric used to quantify the ability of the device to reject common-mode signals, i.e. those that appear simultaneously and in-phase on both inputs. Common Mode Rejection Ratio in DB is denoted by CMRR_db symbol.

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

FAQs on Common-Mode Rejection Ratio of MOSFET in Decibels

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

The formula of Common-Mode Rejection Ratio of MOSFET in Decibels is expressed as Common Mode Rejection Ratio in DB = modulus(20*log10((Voltage Gain)/(Common Mode Gain DB))). Here is an example- 18.93509 = modulus(20*log10((0.026)/(0.23))).

How to calculate Common-Mode Rejection Ratio of MOSFET in Decibels?

With Voltage Gain (A_v) & Common Mode Gain DB (A_cm(db)) we can find Common-Mode Rejection Ratio of MOSFET in Decibels using the formula - Common Mode Rejection Ratio in DB = modulus(20*log10((Voltage Gain)/(Common Mode Gain DB))). This formula also uses Common Logarithm (log10), Modulus (modulus) function(s).

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

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

Common Mode Rejection Ratio in DB=(modulus(Differential Gain DB))/(modulus(Common Mode Gain DB))

Can the Common-Mode Rejection Ratio of MOSFET in Decibels be negative?

Yes, the Common-Mode Rejection Ratio of MOSFET in Decibels, measured in Noise can be negative.

Which unit is used to measure Common-Mode Rejection Ratio of MOSFET in Decibels?

Common-Mode Rejection Ratio of MOSFET in Decibels is usually measured using the Decibel[dB] for Noise. Neper[dB], MilliDecibel[dB] are the few other units in which Common-Mode Rejection Ratio of MOSFET in Decibels can be measured.

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