Second Pole-Frequency of CG Amplifier Calculator

✖Load resistance is the cumulative resistance of a circuit, as seen by the voltage, current, or power source driving that circuit.ⓘ Load Resistance [R_L]			+10% -10%
✖Gate to Drain Capacitance is defined as the capacitance that is observed between the gate and drain of the Junction of MOSFET.ⓘ Gate to Drain Capacitance [C_gd]			+10% -10%
✖Capacitance is the ratio of the amount of electric charge stored on a conductor to a difference in electric potential.ⓘ Capacitance [C_t]			+10% -10%

✖Second Pole Frequency is that frequency at which the transfer function of a system approaches infinity.ⓘ Second Pole-Frequency of CG Amplifier [f_p2]

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Formula

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Second Pole-Frequency of CG Amplifier

Formula

`"f"_{"p2"} = 1/(2*pi*"R"_{"L"}*("C"_{"gd"}+"C"_{"t"}))`

Example

`"25.22801Hz"=1/(2*pi*"1.49kΩ"*("1.345μF"+"2.889μF"))`

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Download High Frequency Response Amplifiers Formula PDF

Second Pole-Frequency of CG Amplifier Solution

STEP 0: Pre-Calculation Summary

Formula Used

Second Pole Frequency = 1/(2*pi*Load Resistance*(Gate to Drain Capacitance+Capacitance))
f_p2 = 1/(2*pi*R_L*(C_gd+C_t))
This formula uses 1 Constants, 4 Variables

Constants Used

pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288

Variables Used

Second Pole Frequency - (Measured in Hertz) - Second Pole Frequency is that frequency at which the transfer function of a system approaches infinity.
Load Resistance - (Measured in Ohm) - Load resistance is the cumulative resistance of a circuit, as seen by the voltage, current, or power source driving that circuit.
Gate to Drain Capacitance - (Measured in Farad) - Gate to Drain Capacitance is defined as the capacitance that is observed between the gate and drain of the Junction of MOSFET.
Capacitance - (Measured in Farad) - Capacitance is the ratio of the amount of electric charge stored on a conductor to a difference in electric potential.

STEP 1: Convert Input(s) to Base Unit

Load Resistance: 1.49 Kilohm --> 1490 Ohm (Check conversion here)
Gate to Drain Capacitance: 1.345 Microfarad --> 1.345E-06 Farad (Check conversion here)
Capacitance: 2.889 Microfarad --> 2.889E-06 Farad (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

f_p2 = 1/(2*pi*R_L*(C_gd+C_t)) --> 1/(2*pi*1490*(1.345E-06+2.889E-06))

Evaluating ... ...

f_p2 = 25.2280108758271

STEP 3: Convert Result to Output's Unit

25.2280108758271 Hertz --> No Conversion Required

FINAL ANSWER

25.2280108758271 ≈ 25.22801 Hertz <-- Second Pole Frequency

(Calculation completed in 00.004 seconds)

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Home » Engineering » Electronics » Amplifiers » High Frequency Response Amplifiers » Response of CG Amplifier » Second Pole-Frequency of CG Amplifier

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Created by Payal Priya

Birsa Institute of Technology (BIT), Sindri

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Vishwakarma Government Engineering College (VGEC), Ahmedabad

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< 6 Response of CG Amplifier Calculators

Open Circuit Time Constant in High Frequency Response of CG Amplifier

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

Input Resistance of CG Amplifier

Go Resistance = (Finite Input Resistance+Load Resistance)/(1+(Transconductance*Finite Input Resistance))

Load Resistance of CG Amplifier

Go Load Resistance = Resistance*(1+(Transconductance*Finite Input Resistance))-Finite Input Resistance

Second Pole-Frequency of CG Amplifier

Go Second Pole Frequency = 1/(2*pi*Load Resistance*(Gate to Drain Capacitance+Capacitance))

Open Circuit Time Constant between Gate and Drain of Common Gate Amplifier

Go Open Circuit Time Constant = (Capacitance+Gate to Drain Capacitance)*Load Resistance

Resistance between Gate and Source of CG Amplifier

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

< 25 Common Stage Amplifiers Calculators

Effective High Frequency Time Constant of CE Amplifier

Go Effective High Frequency Time Constant = Base Emitter Capacitance*Signal Resistance+(Collector Base Junction Capacitance*(Signal Resistance*(1+Transconductance*Load Resistance)+Load Resistance))+(Capacitance*Load Resistance)

High-Frequency Band given Complex Frequency Variable

Go Amplifier Gain in Mid Band = sqrt(((1+(3 dB Frequency/Frequency))*(1+(3 dB Frequency/Frequency Observed)))/((1+(3 dB Frequency/Pole Frequency))*(1+(3 dB Frequency/Second Pole Frequency))))

Open Circuit Time Constant in High Frequency Response of CG Amplifier

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

Test Current in Open Circuit Time Constants Method of CS Amplifier

Go Test Current = Transconductance*Gate to Source Voltage+(Test Voltage+Gate to Source Voltage)/Load Resistance

Input Capacitance in High-Frequency Gain of CE Amplifier

Go Input Capacitance = Collector Base Junction Capacitance+Base Emitter Capacitance*(1+(Transconductance*Load Resistance))

Input Resistance of CG Amplifier

Go Resistance = (Finite Input Resistance+Load Resistance)/(1+(Transconductance*Finite Input Resistance))

Load Resistance of CG Amplifier

Go Load Resistance = Resistance*(1+(Transconductance*Finite Input Resistance))-Finite Input Resistance

Collector Base Junction Resistance of CE Amplifier

Go Collector Resistance = Signal Resistance*(1+Transconductance*Load Resistance)+Load Resistance

Open Circuit Time Constant between Gate and Drain of Common Gate Amplifier

Go Open Circuit Time Constant = (Capacitance+Gate to Drain Capacitance)*Load Resistance

Load Resistance of CS Amplifier

Go Load Resistance = (Output Voltage/(Transconductance*Gate to Source Voltage))

High-Frequency Response given Input Capacitance

Go High Frequency Response = 1/(2*pi*Signal Resistance*Input Capacitance)

Output Voltage of CS Amplifier

Go Output Voltage = Transconductance*Gate to Source Voltage*Load Resistance

Equivalent Signal Resistance of CS Amplifier

Go Internal Small Signal Resistance = 1/((1/Signal Resistance+1/Output Resistance))

Frequency of Zero Transmission of CS Amplifier

Go Transmission Frequency = 1/(Bypass Capacitor*Signal Resistance)

Bypass Capacitance of CS Amplifier

Go Bypass Capacitor = 1/(Transmission Frequency*Signal Resistance)

Resistance between Gate and Source of CG Amplifier

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

High-Frequency Gain of CE Amplifier

Go High Frequency Response = Upper 3-dB Frequency/(2*pi)

Upper 3dB Frequency of CE Amplifier

Go Upper 3-dB Frequency = 2*pi*High Frequency Response

Drain Voltage through Method of Open-Circuit Time Constants to CS Amplifier

Go Drain Voltage = Test Voltage+Gate to Source Voltage

Source Voltage of CS Amplifier

Go Gate to Source Voltage = Drain Voltage-Test Voltage

Midband Gain of CS Amplifier

Go Mid Band Gain = Output Voltage/Small Signal Voltage

Amplifier Bandwidth in Discrete-Circuit Amplifier

Go Amplifier Bandwidth = High Frequency-Low Frequency

Mid Band Gain of CE Amplifier

Go Mid Band Gain = Output Voltage/Threshold Voltage

Resistance between Gate and Drain in Open Circuit Time Constants Method of CS Amplifier

Go Resistance = Test Voltage/Test Current

Current Gain of CS Amplifier

Go Current Gain = Power Gain/Voltage Gain

Second Pole-Frequency of CG Amplifier Formula

Second Pole Frequency = 1/(2*pi*Load Resistance*(Gate to Drain Capacitance+Capacitance))
f_p2 = 1/(2*pi*R_L*(C_gd+C_t))

What is CG amplifier?

In electronics, a common-gate amplifier is one of three basic single-stage field-effect transistor (FET) amplifier topologies, typically used as a current buffer or voltage amplifier. In this circuit the source terminal of the transistor serves as the input, the drain is the output and the gate is connected to the ground, or "common," hence its name. The analogous bipolar junction transistor circuit is the common-base amplifier.

How to Calculate Second Pole-Frequency of CG Amplifier?

Second Pole-Frequency of CG Amplifier calculator uses Second Pole Frequency = 1/(2*pi*Load Resistance*(Gate to Drain Capacitance+Capacitance)) to calculate the Second Pole Frequency, The Second pole-frequency of CG amplifier formula is defined as that frequency at which transfer function of system approaches infinity" and similarly "A Zero frequency is that frequency at which transfer function of system approaches Zero". Second Pole Frequency is denoted by f_p2 symbol.

How to calculate Second Pole-Frequency of CG Amplifier using this online calculator? To use this online calculator for Second Pole-Frequency of CG Amplifier, enter Load Resistance (R_L), Gate to Drain Capacitance (C_gd) & Capacitance (C_t) and hit the calculate button. Here is how the Second Pole-Frequency of CG Amplifier calculation can be explained with given input values -> 25.07654 = 1/(2*pi*1490*(1.345E-06+2.889E-06)).

FAQ

What is Second Pole-Frequency of CG Amplifier?

The Second pole-frequency of CG amplifier formula is defined as that frequency at which transfer function of system approaches infinity" and similarly "A Zero frequency is that frequency at which transfer function of system approaches Zero" and is represented as f_p2 = 1/(2*pi*R_L*(C_gd+C_t)) or Second Pole Frequency = 1/(2*pi*Load Resistance*(Gate to Drain Capacitance+Capacitance)). Load resistance is the cumulative resistance of a circuit, as seen by the voltage, current, or power source driving that circuit, Gate to Drain Capacitance is defined as the capacitance that is observed between the gate and drain of the Junction of MOSFET & Capacitance is the ratio of the amount of electric charge stored on a conductor to a difference in electric potential.

How to calculate Second Pole-Frequency of CG Amplifier?

The Second pole-frequency of CG amplifier formula is defined as that frequency at which transfer function of system approaches infinity" and similarly "A Zero frequency is that frequency at which transfer function of system approaches Zero" is calculated using Second Pole Frequency = 1/(2*pi*Load Resistance*(Gate to Drain Capacitance+Capacitance)). To calculate Second Pole-Frequency of CG Amplifier, you need Load Resistance (R_L), Gate to Drain Capacitance (C_gd) & Capacitance (C_t). With our tool, you need to enter the respective value for Load Resistance, Gate to Drain Capacitance & 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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