Transcondutância g_m
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
gm
About this calculator
The transconductance calculator is a useful tool to calculate the transconductance (g_m) in electronic circuits, especially in semiconductor components.
Transconductance is an important measure in semiconductors, representing the variation of drain current (I_D) in response to a variation of gate-source voltage (V_gs) and threshold voltage (V_t).
This calculator uses the formula g_m = 2·I_D/(V_gs − V_t) to calculate the transconductance, which is fundamental to design and optimize electronic circuits.
It is essential to use this calculator when designing circuits with semiconductor components, especially when dealing with operational amplifiers or power control circuits.
Frequently asked questions
What is transconductance?
Transconductance is a measure of the variation of drain current in response to a variation of gate-source voltage and threshold voltage in semiconductor components.
When to use this calculator?
This calculator should be used when designing circuits with semiconductor components, especially in operational amplifiers or power control circuits.
What is the formula g_m = 2·I_D/(V_gs − V_t)?
This formula is used to calculate the transconductance in semiconductor components, considering the drain current, gate-source voltage and threshold voltage.
What is the drain current (I_D)?
The drain current is the current that flows through the drain of a semiconductor component.
What is the gate-source voltage (V_gs) and threshold voltage (V_t)?
The gate-source voltage is the voltage between the gate and the source of a semiconductor component, while the threshold voltage is the minimum voltage required for the component to start conducting current.