Critical Frequency of Mosfet Calculator

✖Critical Frequency of a MOSFET is the frequency at which the Miller capacitance of the MOSFET begins to dominate the circuit performance.ⓘ Critical Frequency [A_p]

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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.ⓘ Critical Frequency of Mosfet [A_p(dB)]

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Formula

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Critical Frequency of Mosfet

Formula

`"A"_{"p(dB)"} = 10*log10("A"_{"p"})`

Example

`"6.0206Hz"=10*log10("4Hz")`

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Critical Frequency of Mosfet Solution

STEP 0: Pre-Calculation Summary

Formula Used

Critical Frequency in decibles = 10*log10(Critical Frequency)
A_p(dB) = 10*log10(A_p)
This formula uses 1 Functions, 2 Variables

Functions Used

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., log10(Number)

Variables Used

Critical Frequency in decibles - (Measured in Hertz) - Critical Frequency in decibles of a MOSFET is the frequency at which the Miller capacitance of the MOSFET begins to dominate the circuit performance.
Critical Frequency - (Measured in Hertz) - Critical Frequency of a MOSFET is the frequency at which the Miller capacitance of the MOSFET begins to dominate the circuit performance.

STEP 1: Convert Input(s) to Base Unit

Critical Frequency: 4 Hertz --> 4 Hertz No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

A_p(dB) = 10*log10(A_p) --> 10*log10(4)

Evaluating ... ...

A_p(dB) = 6.02059991327962

STEP 3: Convert Result to Output's Unit

6.02059991327962 Hertz --> No Conversion Required

FINAL ANSWER

6.02059991327962 ≈ 6.0206 Hertz <-- Critical Frequency in decibles

(Calculation completed in 00.004 seconds)

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Credits

Created by Suma Madhuri

VIT University (VIT), Chennai

Suma Madhuri has created this Calculator and 50+ more calculators!

Verified by Ritwik Tripathi

Vellore Institute of Technology (VIT Vellore), Vellore

Ritwik Tripathi has verified this Calculator and 100+ more calculators!

< 15 Internal Capacitive Effects and High Frequency Model Calculators

Conductance of Channel of MOSFETs

Go Conductance of Channel = Mobility of Electrons at Surface of Channel*Oxide Capacitance*(Channel Width/Channel Length)*Voltage across Oxide

Transition Frequency of MOSFET

Go Transition Frequency = Transconductance/(2*pi*(Source Gate Capacitance+Gate-Drain Capacitance))

Magnitude of Electron Charge in Channel of MOSFET

Go Electron Charge in Channel = Oxide Capacitance*Channel Width*Channel Length*Effective Voltage

Lower Critical Frequency of Mosfet

Go Corner Frequency = 1/(2*pi*(Resistance+Input Resistance)*Capacitance)

Phase Shift in Output RC Circuit

Go Phase Shift = arctan(Capacitive Reactance/(Resistance+Load Resistance))

Output Miller Capacitance Mosfet

Go Output Miller Capacitance = Gate-Drain Capacitance*((Voltage Gain+1)/Voltage Gain)

Total Capacitance between Gate and Channel of MOSFETs

Go Gate Channel Capacitance = Oxide Capacitance*Channel Width*Channel Length

Gate to Source Channel Width of MOSFET

Go Channel Width = Overlap Capacitance/(Oxide Capacitance*Overlap Length)

Overlap Capacitance of MOSFET

Go Overlap Capacitance = Channel Width*Oxide Capacitance*Overlap Length

Critical Frequency in High Frequency Input RC Circuit

Go Corner Frequency = 1/(2*pi*Input Resistance*Miller Capacitance)

Phase Shift in Input RC Circuit

Go Phase Shift = arctan(Capacitive Reactance/Input Resistance)

Capacitive Reactance of Mosfet

Go Capacitive Reactance = 1/(2*pi*Frequency*Capacitance)

Critical Frequency of Mosfet

Go Critical Frequency in decibles = 10*log10(Critical Frequency)

Miller Capacitance of Mosfet

Go Miller Capacitance = Gate-Drain Capacitance*(Voltage Gain+1)

Attenuation of RC Circuit

Go Attenuation = Base Voltage/Input Voltage

Critical Frequency of Mosfet Formula

Critical Frequency in decibles = 10*log10(Critical Frequency)
A_p(dB) = 10*log10(A_p)

How can the corner frequency of a MOSFET amplifier be increased?

There are a few ways to increase the corner frequency of a MOSFET amplifier: Use a MOSFET with a lower gate-drain capacitance .The gate-drain capacitance is a parasitic capacitance that exists between the gate and drain terminals of a MOSFET. It is caused by the overlap of the gate and drain regions. The lower the gate-drain capacitance, the higher the corner frequency. Use a MOSFET with a higher source resistance .The source resistance is the resistance of the source lead of the MOSFET. The higher the source resistance, the higher the corner frequency.

How to Calculate Critical Frequency of Mosfet?

Critical Frequency of Mosfet calculator uses Critical Frequency in decibles = 10*log10(Critical Frequency) to calculate 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 A_p(dB) symbol.

How to calculate Critical Frequency of Mosfet using this online calculator? To use this online calculator for Critical Frequency of Mosfet, enter Critical Frequency (A_p) and hit the calculate button. Here is how the Critical Frequency of Mosfet calculation can be explained with given input values -> 6.0206 = 10*log10(4).

FAQ

What is Critical Frequency of Mosfet?

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 and is represented as A_p(dB) = 10*log10(A_p) or Critical Frequency in decibles = 10*log10(Critical Frequency). Critical Frequency of a MOSFET is the frequency at which the Miller capacitance of the MOSFET begins to dominate the circuit performance.

How to calculate Critical Frequency of Mosfet?

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 is calculated using Critical Frequency in decibles = 10*log10(Critical Frequency). To calculate Critical Frequency of Mosfet, you need Critical Frequency (A_p). With our tool, you need to enter the respective value for Critical Frequency and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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