Critical Frequency of Mosfet Formula

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Critical Frequency in decibles of a MOSFET is the frequency at which the Miller capacitance of the MOSFET begins to dominate the circuit performance. Check FAQs
Ap(dB)=10log10(Ap)
Ap(dB) - Critical Frequency in decibles?Ap - Critical Frequency?

Critical Frequency of Mosfet Example

With values
With units
Only example

Here is how the Critical Frequency of Mosfet equation looks like with Values.

Here is how the Critical Frequency of Mosfet equation looks like with Units.

Here is how the Critical Frequency of Mosfet equation looks like.

6.0206Edit=10log10(4Edit)
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Critical Frequency of Mosfet Solution

Follow our step by step solution on how to calculate Critical Frequency of Mosfet?

FIRST Step Consider the formula
Ap(dB)=10log10(Ap)
Next Step Substitute values of Variables
Ap(dB)=10log10(4Hz)
Next Step Prepare to Evaluate
Ap(dB)=10log10(4)
Next Step Evaluate
Ap(dB)=6.02059991327962Hz
LAST Step Rounding Answer
Ap(dB)=6.0206Hz

Critical Frequency of Mosfet Formula Elements

Variables
Functions
Critical Frequency in decibles
Critical Frequency in decibles of a MOSFET is the frequency at which the Miller capacitance of the MOSFET begins to dominate the circuit performance.
Symbol: Ap(dB)
Measurement: FrequencyUnit: Hz
Note: Value should be greater than 0.
Critical Frequency
Critical Frequency of a MOSFET is the frequency at which the Miller capacitance of the MOSFET begins to dominate the circuit performance.
Symbol: Ap
Measurement: FrequencyUnit: Hz
Note: Value should be greater than 0.
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)

Other formulas in Internal Capacitive Effects and High Frequency Model category

​Go Gate to Source Channel Width of MOSFET
Wc=CocCoxLov
​Go Overlap Capacitance of MOSFET
Coc=WcCoxLov
​Go Total Capacitance between Gate and Channel of MOSFETs
Cg=CoxWcL
​Go Transition Frequency of MOSFET
ft=gm2π(Csg+Cgd)

How to Evaluate Critical Frequency of Mosfet?

Critical Frequency of Mosfet evaluator uses Critical Frequency in decibles = 10*log10(Critical Frequency) to evaluate the Critical Frequency in decibles, The Critical Frequency of Mosfet formula is defined as an important parameter for high-frequency MOSFET circuits. If the operating frequency of the circuit is above the critical frequency, the Miller capacitance will cause the gain of the circuit to decrease and the bandwidth of the circuit to narrow. Critical Frequency in decibles is denoted by Ap(dB) symbol.

How to evaluate Critical Frequency of Mosfet using this online evaluator? To use this online evaluator for Critical Frequency of Mosfet, enter Critical Frequency (Ap) and hit the calculate button.

FAQs on Critical Frequency of Mosfet

What is the formula to find Critical Frequency of Mosfet?
The formula of Critical Frequency of Mosfet is expressed as Critical Frequency in decibles = 10*log10(Critical Frequency). Here is an example- 6.0206 = 10*log10(4).
How to calculate Critical Frequency of Mosfet?
With Critical Frequency (Ap) we can find Critical Frequency of Mosfet using the formula - Critical Frequency in decibles = 10*log10(Critical Frequency). This formula also uses Common Logarithm Function function(s).
Can the Critical Frequency of Mosfet be negative?
No, the Critical Frequency of Mosfet, measured in Frequency cannot be negative.
Which unit is used to measure Critical Frequency of Mosfet?
Critical Frequency of Mosfet is usually measured using the Hertz[Hz] for Frequency. Petahertz[Hz], Terahertz[Hz], Gigahertz[Hz] are the few other units in which Critical Frequency of Mosfet can be measured.
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