Transition Frequency of Source-Follower Transfer Function Calculator

✖Transconductance is the ratio of the change in current at the output terminal to the change in the voltage at the input terminal of an active device.ⓘ Transconductance [g_m]			+10% -10%
✖Gate to Source Capacitance is defined as the capacitance that is observed between the gate and Source of the Junction of MOSFET.ⓘ Gate to Source Capacitance [C_gs]			+10% -10%

✖The Transition Frequency associated with the transition (1 to 2 or 2 to 1) between two different vibrational levels.ⓘ Transition Frequency of Source-Follower Transfer Function [f_tr]

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Transition Frequency of Source-Follower Transfer Function

Formula

`"f"_{"tr"} = "g"_{"m"}/"C"_{"gs"}`

Example

`"1846.154Hz"="4.8mS"/"2.6μF"`

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Transition Frequency of Source-Follower Transfer Function Solution

STEP 0: Pre-Calculation Summary

Formula Used

Transition Frequency = Transconductance/Gate to Source Capacitance
f_tr = g_m/C_gs
This formula uses 3 Variables

Variables Used

Transition Frequency - (Measured in Hertz) - The Transition Frequency associated with the transition (1 to 2 or 2 to 1) between two different vibrational levels.
Transconductance - (Measured in Siemens) - Transconductance is the ratio of the change in current at the output terminal to the change in the voltage at the input terminal of an active device.
Gate to Source Capacitance - (Measured in Farad) - Gate to Source Capacitance is defined as the capacitance that is observed between the gate and Source of the Junction of MOSFET.

STEP 1: Convert Input(s) to Base Unit

Transconductance: 4.8 Millisiemens --> 0.0048 Siemens (Check conversion here)
Gate to Source Capacitance: 2.6 Microfarad --> 2.6E-06 Farad (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

f_tr = g_m/C_gs --> 0.0048/2.6E-06

Evaluating ... ...

f_tr = 1846.15384615385

STEP 3: Convert Result to Output's Unit

1846.15384615385 Hertz --> No Conversion Required

FINAL ANSWER

1846.15384615385 ≈ 1846.154 Hertz <-- Transition Frequency

(Calculation completed in 00.004 seconds)

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Home » Engineering » Electronics » Amplifiers » High Frequency Response Amplifiers » Response of Source and Emitter Follower » Transition Frequency of Source-Follower Transfer Function

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< 7 Response of Source and Emitter Follower Calculators

Constant 2 of Source Follower Transfer Function

Go Constant B = (((Gate to Source Capacitance+Gate to Drain Capacitance)*Capacitance+(Gate to Source Capacitance+Gate to Source Capacitance))/(Transconductance*Load Resistance+1))*Signal Resistance*Load Resistance

Signal Voltage in High Frequency Response of Source and Emitter Follower

Go Output Voltage = (Electric Current*Signal Resistance)+Gate to Source Voltage+Threshold Voltage

Transition Frequency of Source-Follower Transfer Function

Go Transition Frequency = Transconductance/Gate to Source Capacitance

Gate to Source Capacitance of Source Follower

Go Gate to Source Capacitance = Transconductance/Transition Frequency

Transconductance of Source-Follower

Go Transconductance = Transition Frequency*Gate to Source Capacitance

Dominant Pole-Frequency of Source-Follower

Go Frequency of Dominant Pole = 1/(2*pi*Constant B)

Break Frequency of Source Follower

Go Break Frequency = 1/sqrt(Constant C)

< 20 Multi Stage Amplifiers Calculators

Constant 2 of Source Follower Transfer Function

Gain Bandwidth Product

Go Gain Bandwidth Product = (Transconductance*Load Resistance)/(2*pi*Load Resistance*(Capacitance+Gate to Drain Capacitance))

3-DB Frequency in Design Insight and Trade-Off

Go 3 dB Frequency = 1/(2*pi*(Capacitance+Gate to Drain Capacitance)*(1/(1/Load Resistance+1/Output Resistance)))

Transconductance of CC-CB Amplifier

Go Transconductance = (2*Voltage Gain)/((Resistance/(Resistance+Signal Resistance))*Load Resistance)

Overall Voltage Gain of CC CB Amplifier

Go Voltage Gain = 1/2*(Resistance/(Resistance+Signal Resistance))*Load Resistance*Transconductance

Signal Voltage in High Frequency Response of Source and Emitter Follower

Go Output Voltage = (Electric Current*Signal Resistance)+Gate to Source Voltage+Threshold Voltage

Input Resistance of CC CB Amplifier

Go Resistance = (Common Emitter Current Gain+1)*(Emitter Resistance+Resistance of Secondary Winding in Primary)

Total Capacitance of CB-CG Amplifier

Go Capacitance = 1/(2*pi*Load Resistance*Output Pole Frequency)

Dominant Pole Frequency of Differential Amplifier

Go Pole Frequency = 1/(2*pi*Capacitance*Output Resistance)

Frequency of Differential Amplifier given Load Resistance

Go Frequency = 1/(2*pi*Load Resistance*Capacitance)

Short Circuit Transconductance of Differential Amplifier

Go Short Circuit Transconductance = Output Current/Differential Input Signal

Transition Frequency of Source-Follower Transfer Function

Go Transition Frequency = Transconductance/Gate to Source Capacitance

Gate to Source Capacitance of Source Follower

Go Gate to Source Capacitance = Transconductance/Transition Frequency

Transconductance of Source-Follower

Go Transconductance = Transition Frequency*Gate to Source Capacitance

Drain Resistance in Cascode Amplifier

Go Drain Resistance = 1/(1/Finite Input Resistance+1/Resistance)

Amplifier Gain given Function of Complex Frequency Variable

Go Amplifier Gain in Mid Band = Mid Band Gain*Gain Factor

Gain Factor

Go Gain Factor = Amplifier Gain in Mid Band/Mid Band Gain

Dominant Pole-Frequency of Source-Follower

Go Frequency of Dominant Pole = 1/(2*pi*Constant B)

Power Gain of Amplifier given Voltage Gain and Current Gain

Go Power Gain = Voltage Gain*Current Gain

Break Frequency of Source Follower

Go Break Frequency = 1/sqrt(Constant C)

Transition Frequency of Source-Follower Transfer Function Formula

Transition Frequency = Transconductance/Gate to Source Capacitance
f_tr = g_m/C_gs

What is emitter-source follower?

The Emitter or Source follower is often called a common Collector or Drain amplifier because the collector or drain is common to both the input and the output. The input impedance is much higher than its output impedance so that a signal source does not have to supply as much power to the input.

How to Calculate Transition Frequency of Source-Follower Transfer Function?

Transition Frequency of Source-Follower Transfer Function calculator uses Transition Frequency = Transconductance/Gate to Source Capacitance to calculate the Transition Frequency, The transition frequency of source-follower transfer function formula is defined as frequency at which current gain, with short circuit (at HF) output, is unity. Transition Frequency is denoted by f_tr symbol.

How to calculate Transition Frequency of Source-Follower Transfer Function using this online calculator? To use this online calculator for Transition Frequency of Source-Follower Transfer Function, enter Transconductance (g_m) & Gate to Source Capacitance (C_gs) and hit the calculate button. Here is how the Transition Frequency of Source-Follower Transfer Function calculation can be explained with given input values -> 1846.154 = 0.0048/2.6E-06.

FAQ

What is Transition Frequency of Source-Follower Transfer Function?

The transition frequency of source-follower transfer function formula is defined as frequency at which current gain, with short circuit (at HF) output, is unity and is represented as f_tr = g_m/C_gs or Transition Frequency = Transconductance/Gate to Source Capacitance. Transconductance is the ratio of the change in current at the output terminal to the change in the voltage at the input terminal of an active device & Gate to Source Capacitance is defined as the capacitance that is observed between the gate and Source of the Junction of MOSFET.

How to calculate Transition Frequency of Source-Follower Transfer Function?

The transition frequency of source-follower transfer function formula is defined as frequency at which current gain, with short circuit (at HF) output, is unity is calculated using Transition Frequency = Transconductance/Gate to Source Capacitance. To calculate Transition Frequency of Source-Follower Transfer Function, you need Transconductance (g_m) & Gate to Source Capacitance (C_gs). With our tool, you need to enter the respective value for Transconductance & Gate to Source 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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