Transconductance in MOSFET Amplifiers Formulas

Transconductance is the change in the drain current divided by the small change in the gate/source voltage with a constant drain/source voltage. And is denoted by g_m. Transconductance is usually measured using the Millisiemens for Electric Conductance. Note that the value of Transconductance is always positive.

Formulas to find Transconductance in MOSFET Amplifiers

fxTransconductance of MOS Differential Amplifier on Small-Signal OperationGo

MOSFET Amplifiers formulas that make use of Transconductance

fxCommon-Mode Current Gain of Controlled Source TransistorGo

fxDownwards Resistance of Cascode Differential Half CircuitGo

fxUpwards Resistance of Cascode Differential Half-CircuitGo

fxDifferential Voltage Gain in MOS Differential AmplifierGo

List of variables in MOSFET Amplifiers formulas

fx Total Current Go

fx Effective Voltage Go

FAQ

What is the Transconductance?

Transconductance is the change in the drain current divided by the small change in the gate/source voltage with a constant drain/source voltage. Transconductance is usually measured using the Millisiemens for Electric Conductance. Note that the value of Transconductance is always positive.

Can the Transconductance be negative?

No, the Transconductance, measured in Electric Conductance cannot be negative.

What unit is used to measure Transconductance?

Transconductance is usually measured using the Millisiemens[mS] for Electric Conductance. Siemens[mS], Megasiemens[mS], Mho[mS] are the few other units in which Transconductance can be measured.

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