MOSFET Transconductance Solution

STEP 0: Pre-Calculation Summary
Formula Used
Transconductance = Change in Drain Current/Gate-Source Voltage
gm = ΔId/Vgs
This formula uses 3 Variables
Variables Used
Transconductance - (Measured in Siemens) - Transconductance is defined as the ratio of the change in the output current to the change in the input voltage, with the gate-source voltage held constant.
Change in Drain Current - (Measured in Ampere) - Change in drain current indicates the change in current conduction capability of the silicon chip; it can be used as a guide when comparing different devices.
Gate-Source Voltage - (Measured in Volt) - Gate-source voltage is a critical parameter that affects the operation of an FET, and it is often used to control the device's behavior.
STEP 1: Convert Input(s) to Base Unit
Change in Drain Current: 2 Milliampere --> 0.002 Ampere (Check conversion here)
Gate-Source Voltage: 4 Volt --> 4 Volt No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
gm = ΔId/Vgs --> 0.002/4
Evaluating ... ...
gm = 0.0005
STEP 3: Convert Result to Output's Unit
0.0005 Siemens -->0.5 Millisiemens (Check conversion here)
FINAL ANSWER
0.5 Millisiemens <-- Transconductance
(Calculation completed in 00.004 seconds)

Credits

Created by Payal Priya
Birsa Institute of Technology (BIT), Sindri
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Verified by Prahalad Singh
Jaipur Engineering College and Research Centre (JECRC), Jaipur
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16 Transconductance Calculators

MOSFET Transconductance using Process Transconductance Parameter
Go Process Transconductance Parameter = Transconductance/(Aspect Ratio*(Gate-Source Voltage-Threshold Voltage))
Transconductance given Process Transconductance Parameter
Go Transconductance = Process Transconductance Parameter*Aspect Ratio*(Gate-Source Voltage-Threshold Voltage)
Transconductance given Drain Current
Go Transconductance = sqrt(2*Process Transconductance Parameter*Aspect Ratio*Drain Current)
MOSFET Transconductance using Process Transconductance Parameter and Overdrive Voltage
Go Process Transconductance Parameter = Transconductance/(Aspect Ratio*Overdrive Voltage)
Process Transconductance given Transconductance and Drain Current
Go Process Transconductance Parameter = Transconductance^2/(2*Aspect Ratio*Drain Current)
Drain Current given process transconductance and transconductance
Go Drain Current = Transconductance^2/(2*Aspect Ratio*Process Transconductance Parameter)
MOSFET Transconductance given Transconductance Parameter
Go Transconductance = Transconductance Parameter*(Gate-Source Voltage-Threshold Voltage)
Transconductance using Process Transconductance Parameter and Overdrive Voltage
Go Transconductance = Process Transconductance Parameter*Aspect Ratio*Overdrive Voltage
MOSFET Transconductance Parameter using Process Transconductance
Go Transconductance Parameter = Process Transconductance Parameter*Aspect Ratio
Body Effect on Transconductance
Go Body Transconductance = Change in Threshold to Base Voltage*Transconductance
Back Gate Transconductance
Go Back Gate Transconductance = Transconductance*Voltage Efficiency
MOSFET Transconductance given Overdrive Voltage
Go Transconductance = Transconductance Parameter*Overdrive Voltage
Process Transconductance Parameter of MOSFET
Go Transconductance Parameter = Transconductance/Overdrive Voltage
MOSFET Transconductance
Go Transconductance = Change in Drain Current/Gate-Source Voltage
Drain Current using Transconductance
Go Drain Current = (Overdrive Voltage)*Transconductance/2
Transconductance in MOSFET
Go Transconductance = (2*Drain Current)/Overdrive Voltage

MOSFET Transconductance Formula

Transconductance = Change in Drain Current/Gate-Source Voltage
gm = ΔId/Vgs

What is the use of transconductance in MOSFET?

Transconductance is an expression of the performance of a bipolar transistor or field-effect transistor (FET). In general, the larger the transconductance figure for a device, the greater the gain(amplification) it is capable of delivering, when all other factors are held constant.

How to Calculate MOSFET Transconductance?

MOSFET Transconductance calculator uses Transconductance = Change in Drain Current/Gate-Source Voltage to calculate the Transconductance, The MOSFET 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 denoted by gm symbol.

How to calculate MOSFET Transconductance using this online calculator? To use this online calculator for MOSFET Transconductance, enter Change in Drain Current (ΔId) & Gate-Source Voltage (Vgs) and hit the calculate button. Here is how the MOSFET Transconductance calculation can be explained with given input values -> 500 = 0.002/4.

FAQ

What is MOSFET Transconductance?
The MOSFET 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 represented as gm = ΔId/Vgs or Transconductance = Change in Drain Current/Gate-Source Voltage. Change in drain current indicates the change in current conduction capability of the silicon chip; it can be used as a guide when comparing different devices & Gate-source voltage is a critical parameter that affects the operation of an FET, and it is often used to control the device's behavior.
How to calculate MOSFET Transconductance?
The MOSFET Transconductance is the change in the drain current divided by the small change in the gate/source voltage with a constant drain/source voltage is calculated using Transconductance = Change in Drain Current/Gate-Source Voltage. To calculate MOSFET Transconductance, you need Change in Drain Current (ΔId) & Gate-Source Voltage (Vgs). With our tool, you need to enter the respective value for Change in Drain Current & Gate-Source Voltage and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Transconductance?
In this formula, Transconductance uses Change in Drain Current & Gate-Source Voltage. We can use 6 other way(s) to calculate the same, which is/are as follows -
  • Transconductance = sqrt(2*Process Transconductance Parameter*Aspect Ratio*Drain Current)
  • Transconductance = Process Transconductance Parameter*Aspect Ratio*(Gate-Source Voltage-Threshold Voltage)
  • Transconductance = Process Transconductance Parameter*Aspect Ratio*Overdrive Voltage
  • Transconductance = Transconductance Parameter*(Gate-Source Voltage-Threshold Voltage)
  • Transconductance = Transconductance Parameter*Overdrive Voltage
  • Transconductance = (2*Drain Current)/Overdrive Voltage
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