## MOSFET Unity-Gain Frequency Solution

STEP 0: Pre-Calculation Summary
Formula Used
Unity Gain Frequency in MOSFET = Transconductance in MOSFET/(Gate Source Capacitance+Gate Drain Capacitance)
ft = gm/(Cgs+Cgd)
This formula uses 4 Variables
Variables Used
Unity Gain Frequency in MOSFET - (Measured in Hertz) - Unity Gain Frequency in MOSFET refers to the frequency at which the voltage gain of the device drops to 1 (0dB) in a common-source configuration with a resistive load.
Transconductance in MOSFET - (Measured in Siemens) - Transconductance in MOSFET is a key parameter that describes the relationship between the input voltage and the output current.
Gate Source Capacitance - (Measured in Farad) - Gate Source Capacitance refers to the capacitance between the gate and source terminals of a field-effect transistor (FET).
Gate Drain Capacitance - (Measured in Farad) - Gate Drain Capacitance refers to the capacitance between the gate and drain terminals of the device.
STEP 1: Convert Input(s) to Base Unit
Transconductance in MOSFET: 2.2 Siemens --> 2.2 Siemens No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
ft = gm/(Cgs+Cgd) --> 2.2/(5.6E-05+2.8E-06)
Evaluating ... ...
ft = 37414.9659863946
STEP 3: Convert Result to Output's Unit
37414.9659863946 Hertz -->37.4149659863946 Kilohertz (Check conversion ​here)
37.4149659863946 37.41497 Kilohertz <-- Unity Gain Frequency in MOSFET
(Calculation completed in 00.004 seconds)
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Dayananda Sagar College of Engineering (DSCE), Bangalore
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## <MOS IC Fabrication Calculators

Body Effect in MOSFET
​ Go Threshold Voltage with Substrate = Threshold Voltage with Zero Body Bias+Body Effect Parameter*(sqrt(2*Bulk Fermi Potential+Voltage Applied to Body)-sqrt(2*Bulk Fermi Potential))
Drain Current of MOSFET at Saturation Region
​ Go Drain Current = Transconductance Parameter/2*(Gate Source Voltage-Threshold Voltage with Zero Body Bias)^2*(1+Channel Length Modulation Factor*Drain Source Voltage)
Channel Resistance
​ Go Channel Resistance = Transistor's Length/Transistor's Width*1/(Electron Mobility*Carrier Density)
MOSFET Unity-Gain Frequency
​ Go Unity Gain Frequency in MOSFET = Transconductance in MOSFET/(Gate Source Capacitance+Gate Drain Capacitance)

## MOSFET Unity-Gain Frequency Formula

Unity Gain Frequency in MOSFET = Transconductance in MOSFET/(Gate Source Capacitance+Gate Drain Capacitance)
ft = gm/(Cgs+Cgd)

## Why is the unity-gain frequency important in MOSFETs?

The unity-gain frequency is crucial in high-frequency applications. It helps determine the bandwidth and speed of a MOSFET, making it relevant in applications such as RF circuits and high-speed digital systems.

## How to Calculate MOSFET Unity-Gain Frequency?

MOSFET Unity-Gain Frequency calculator uses Unity Gain Frequency in MOSFET = Transconductance in MOSFET/(Gate Source Capacitance+Gate Drain Capacitance) to calculate the Unity Gain Frequency in MOSFET, The MOSFET Unity-Gain Frequency refers to a critical parameter related to the high-frequency performance of MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) devices. It is the frequency at which the gain of the amplifier drops to 1, indicating that the output signal has the same magnitude as the input signal. Unity Gain Frequency in MOSFET is denoted by ft symbol.

How to calculate MOSFET Unity-Gain Frequency using this online calculator? To use this online calculator for MOSFET Unity-Gain Frequency, enter Transconductance in MOSFET (gm), Gate Source Capacitance (Cgs) & Gate Drain Capacitance (Cgd) and hit the calculate button. Here is how the MOSFET Unity-Gain Frequency calculation can be explained with given input values -> 0.037415 = 2.2/(5.6E-05+2.8E-06).

### FAQ

What is MOSFET Unity-Gain Frequency?
The MOSFET Unity-Gain Frequency refers to a critical parameter related to the high-frequency performance of MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) devices. It is the frequency at which the gain of the amplifier drops to 1, indicating that the output signal has the same magnitude as the input signal and is represented as ft = gm/(Cgs+Cgd) or Unity Gain Frequency in MOSFET = Transconductance in MOSFET/(Gate Source Capacitance+Gate Drain Capacitance). Transconductance in MOSFET is a key parameter that describes the relationship between the input voltage and the output current, Gate Source Capacitance refers to the capacitance between the gate and source terminals of a field-effect transistor (FET) & Gate Drain Capacitance refers to the capacitance between the gate and drain terminals of the device.
How to calculate MOSFET Unity-Gain Frequency?
The MOSFET Unity-Gain Frequency refers to a critical parameter related to the high-frequency performance of MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) devices. It is the frequency at which the gain of the amplifier drops to 1, indicating that the output signal has the same magnitude as the input signal is calculated using Unity Gain Frequency in MOSFET = Transconductance in MOSFET/(Gate Source Capacitance+Gate Drain Capacitance). To calculate MOSFET Unity-Gain Frequency, you need Transconductance in MOSFET (gm), Gate Source Capacitance (Cgs) & Gate Drain Capacitance (Cgd). With our tool, you need to enter the respective value for Transconductance in MOSFET, Gate Source Capacitance & Gate Drain Capacitance 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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