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Transconductance in Common Source Amplifier Formula

GoTransconductance using Collector Current of Transistor Amplifier Formula

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MOSFET Primary Transconductance is the change in the drain current divided by the small change in the gate/source voltage with a constant drain/source voltage. Check FAQs

g mp = f ug \cdot (C gs + C gd)

g_mp - MOSFET Primary Transconductance?f_ug - Unity Gain Frequency?C_gs - Gate to Source Capacitance?C_gd - Capacitance Gate to Drain?

Transconductance in Common Source Amplifier Example

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Here is how the Transconductance in Common Source Amplifier equation looks like with Values.

Here is how the Transconductance in Common Source Amplifier equation looks like with Units.

Here is how the Transconductance in Common Source Amplifier equation looks like.

19.7663 = 51.57 \cdot (145.64 + 237.65)

19.7663mS = 51.57Hz \cdot (145.64μF + 237.65μF)

19.7663 = 51.57 \cdot (145.64 + 237.65)

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Transconductance in Common Source Amplifier Solution

Follow our step by step solution on how to calculate Transconductance in Common Source Amplifier?

FIRST Step Consider the formula

g mp = f ug \cdot (C gs + C gd)

Next Step Substitute values of Variables

∴

g mp = 51.57Hz \cdot (145.64μF + 237.65μF)

Next Step Convert Units

∴

g mp = 51.57Hz \cdot (0.0001F + 0.0002F)

Next Step Prepare to Evaluate

∴

g mp = 51.57 \cdot (0.0001 + 0.0002)

Next Step Evaluate

∴

g mp = 0.0197662653S

Next Step Convert to Output's Unit

∴

g mp = 19.7662653mS

LAST Step Rounding Answer

∴

g mp = 19.7663mS

Transconductance in Common Source Amplifier Formula Elements

Variables

MOSFET Primary Transconductance

MOSFET Primary Transconductance is the change in the drain current divided by the small change in the gate/source voltage with a constant drain/source voltage.

Symbol: g_mp

Measurement: TransconductanceUnit: mS

Note: Value should be greater than 0.

Formulas to find MOSFET Primary Transconductance

Unity Gain Frequency

Unity gain frequency of an amplifier is simply the frequency of an input signal at which the open-loop gain is equal to 1.

Symbol: f_ug

Measurement: FrequencyUnit: Hz

Note: Value should be greater than 0.

Formulas to find Unity Gain Frequency

Gate to Source Capacitance

Gate to source capacitance is capacitance between the gate terminal and source terminal.

Symbol: C_gs

Measurement: CapacitanceUnit: μF

Note: Value should be greater than 0.

Formulas to find Gate to Source Capacitance

Capacitance Gate to Drain

Capacitance gate to drain is defined as the capacitance that is observed between the gate and drain of the Junction of MOSFET.

Symbol: C_gd

Measurement: CapacitanceUnit: μF

Note: Value should be greater than 0.

Formulas to find Capacitance Gate to Drain

Other Formulas to find MOSFET Primary Transconductance

Go Transconductance using Collector Current of Transistor Amplifier

g mp = \frac{i c}{V t}

Other formulas in Common Source Amplifier category

Go Emitter Current of Common-Base Amplifier

i e = \frac{V in}{R e}

Go Fundamental Voltage in Common-Emitter Amplifier

V fc = R in \cdot i b

Go Input Impedance of Common-Base Amplifier

Z in = {(\frac{1}{R e} + \frac{1}{R sm})}^{- 1}

Go Input Resistance of Common Emitter Amplifier

R in = {(\frac{1}{R b} + \frac{1}{R b2} + \frac{1}{R sm})}^{- 1}

How to Evaluate Transconductance in Common Source Amplifier?

Transconductance in Common Source Amplifier evaluator uses MOSFET Primary Transconductance = Unity Gain Frequency*(Gate to Source Capacitance+Capacitance Gate to Drain) to evaluate the MOSFET Primary Transconductance, Transconductance in Common Source Amplifier is the ratio of the collector current to the base voltage. It is usually expressed in units of amperes per volt (A/V). MOSFET Primary Transconductance is denoted by g_mp symbol.

How to evaluate Transconductance in Common Source Amplifier using this online evaluator? To use this online evaluator for Transconductance in Common Source Amplifier, enter Unity Gain Frequency (f_ug), Gate to Source Capacitance (C_gs) & Capacitance Gate to Drain (C_gd) and hit the calculate button.

FAQs on Transconductance in Common Source Amplifier

What is the formula to find Transconductance in Common Source Amplifier?

The formula of Transconductance in Common Source Amplifier is expressed as MOSFET Primary Transconductance = Unity Gain Frequency*(Gate to Source Capacitance+Capacitance Gate to Drain). Here is an example- 19766.27 = 51.57*(0.00014564+0.00023765).

How to calculate Transconductance in Common Source Amplifier?

With Unity Gain Frequency (f_ug), Gate to Source Capacitance (C_gs) & Capacitance Gate to Drain (C_gd) we can find Transconductance in Common Source Amplifier using the formula - MOSFET Primary Transconductance = Unity Gain Frequency*(Gate to Source Capacitance+Capacitance Gate to Drain).

What are the other ways to Calculate MOSFET Primary Transconductance?

Here are the different ways to Calculate MOSFET Primary Transconductance-

MOSFET Primary Transconductance=Collector Current/Threshold Voltage

Can the Transconductance in Common Source Amplifier be negative?

No, the Transconductance in Common Source Amplifier, measured in Transconductance cannot be negative.

Which unit is used to measure Transconductance in Common Source Amplifier?

Transconductance in Common Source Amplifier is usually measured using the Millisiemens[mS] for Transconductance. Siemens[mS] are the few other units in which Transconductance in Common Source Amplifier can be measured.

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Transconductance in Common Source Amplifier Formula

​GoTransconductance using Collector Current of Transistor Amplifier Formula

Transconductance in Common Source Amplifier Example

Transconductance in Common Source Amplifier Solution

Transconductance in Common Source Amplifier Formula Elements

Other Formulas to find MOSFET Primary Transconductance

Other formulas in Common Source Amplifier category

How to Evaluate Transconductance in Common Source Amplifier?

FAQs on Transconductance in Common Source Amplifier

Variable Name

GoTransconductance using Collector Current of Transistor Amplifier Formula