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Bipin Tripathi Kumaon Institute of Technology (BTKIT), Dwarahat
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Threshold Voltage of MOSFET Solution

STEP 0: Pre-Calculation Summary
Formula Used
threshold_voltage = body effect coefficient*(sqrt(surface potential+Potential difference Source To Body)-sqrt(surface potential))+Threshold Voltage
VT = γ*(sqrt(Φs+Vsb)-sqrt(Φs))+Vto
This formula uses 1 Functions, 4 Variables
Functions Used
sqrt - Squre root function, sqrt(Number)
Variables Used
body effect coefficient- body effect coefficient is the influence of source-bulk voltage in the current due to change of the threshold voltage by the source-bulk voltage
surface potential - surface potential is a key parameter in evaluating the DC property of thin-film transistors (Measured in Volt)
Potential difference Source To Body - Potential difference Source To Body (Measured in Volt)
Threshold Voltage - Threshold Voltage When Source is at body potential (Measured in Volt)
STEP 1: Convert Input(s) to Base Unit
body effect coefficient: 4 --> No Conversion Required
surface potential: 7 Volt --> 7 Volt No Conversion Required
Potential difference Source To Body: 3 Volt --> 3 Volt No Conversion Required
Threshold Voltage: 10 Volt --> 10 Volt No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
VT = γ*(sqrt(Φs+Vsb)-sqrt(Φs))+Vto --> 4*(sqrt(7+3)-sqrt(7))+10
Evaluating ... ...
VT = 12.0661053964152
STEP 3: Convert Result to Output's Unit
12.0661053964152 Volt --> No Conversion Required
FINAL ANSWER
12.0661053964152 Volt <-- Threshold voltage
(Calculation completed in 00.016 seconds)

10+ CMOS-VLSI Design Calculators

Drain Voltage
drain_voltage = sqrt(dynamic power/frequency*Capacitance) Go
Gate to Channel Voltage
gate_to_channel_voltage = (Channel Charge/Gate Capacitance)+Threshold voltage Go
Threshold Voltage
threshold_voltage = Gate to Channel Voltage-(Channel Charge/Gate Capacitance) Go
Gate Capacitance
channel_charge = Gate Capacitance*(Gate to Channel Voltage-Threshold voltage) Go
Channel Charge
channel_charge = Gate Capacitance*(Gate to Channel Voltage-Threshold voltage) Go
Capacitor dynamic power
dynamic_power = Drain Voltage^2*frequency*Capacitance Go
Potential gate to Collector
potential_gate_to_collector = (Potential Gate to Source+Potential Gate to Drain)/2 Go
Potential Gate to Drain
potential_gate_to_drain = 2*potential gate to collector-Potential Gate to Source Go
Static Current
static_current = Static power/Drain Voltage Go
Static Power Dissipation
static_power = static current*Drain Voltage Go

Threshold Voltage of MOSFET Formula

threshold_voltage = body effect coefficient*(sqrt(surface potential+Potential difference Source To Body)-sqrt(surface potential))+Threshold Voltage
VT = γ*(sqrt(Φs+Vsb)-sqrt(Φs))+Vto

Why Does The Present Vlsi Circuits Use Mosfets Instead Of Bjts?

Compared to BJTs, MOSFETs can be made very small as they occupy very small silicon area on IC chip and are relatively simple in terms of manufacturing. Moreover digital and memory ICs can be implemented with circuits that use only MOSFETs i.e. no resistors, diodes, etc.

How to Calculate Threshold Voltage of MOSFET?

Threshold Voltage of MOSFET calculator uses threshold_voltage = body effect coefficient*(sqrt(surface potential+Potential difference Source To Body)-sqrt(surface potential))+Threshold Voltage to calculate the Threshold voltage, The Threshold Voltage of MOSFET formula is defined as is the voltage applied between gate and source of a MOSFET that is needed to turn the device on for linear and saturation regions of operation. Threshold voltage and is denoted by VT symbol.

How to calculate Threshold Voltage of MOSFET using this online calculator? To use this online calculator for Threshold Voltage of MOSFET, enter body effect coefficient (γ), surface potential (Φs), Potential difference Source To Body (Vsb) and Threshold Voltage (Vto) and hit the calculate button. Here is how the Threshold Voltage of MOSFET calculation can be explained with given input values -> 12.06611 = 4*(sqrt(7+3)-sqrt(7))+10 .

FAQ

What is Threshold Voltage of MOSFET?
The Threshold Voltage of MOSFET formula is defined as is the voltage applied between gate and source of a MOSFET that is needed to turn the device on for linear and saturation regions of operation and is represented as VT = γ*(sqrt(Φs+Vsb)-sqrt(Φs))+Vto or threshold_voltage = body effect coefficient*(sqrt(surface potential+Potential difference Source To Body)-sqrt(surface potential))+Threshold Voltage . body effect coefficient is the influence of source-bulk voltage in the current due to change of the threshold voltage by the source-bulk voltage, surface potential is a key parameter in evaluating the DC property of thin-film transistors, Potential difference Source To Body and Threshold Voltage When Source is at body potential.
How to calculate Threshold Voltage of MOSFET?
The Threshold Voltage of MOSFET formula is defined as is the voltage applied between gate and source of a MOSFET that is needed to turn the device on for linear and saturation regions of operation is calculated using threshold_voltage = body effect coefficient*(sqrt(surface potential+Potential difference Source To Body)-sqrt(surface potential))+Threshold Voltage . To calculate Threshold Voltage of MOSFET, you need body effect coefficient (γ), surface potential (Φs), Potential difference Source To Body (Vsb) and Threshold Voltage (Vto). With our tool, you need to enter the respective value for body effect coefficient, surface potential, Potential difference Source To Body and Threshold 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 Threshold voltage?
In this formula, Threshold voltage uses body effect coefficient, surface potential, Potential difference Source To Body and Threshold Voltage. We can use 10 other way(s) to calculate the same, which is/are as follows -
  • dynamic_power = Drain Voltage^2*frequency*Capacitance
  • drain_voltage = sqrt(dynamic power/frequency*Capacitance)
  • static_power = static current*Drain Voltage
  • static_current = Static power/Drain Voltage
  • channel_charge = Gate Capacitance*(Gate to Channel Voltage-Threshold voltage)
  • channel_charge = Gate Capacitance*(Gate to Channel Voltage-Threshold voltage)
  • gate_to_channel_voltage = (Channel Charge/Gate Capacitance)+Threshold voltage
  • threshold_voltage = Gate to Channel Voltage-(Channel Charge/Gate Capacitance)
  • potential_gate_to_collector = (Potential Gate to Source+Potential Gate to Drain)/2
  • potential_gate_to_drain = 2*potential gate to collector-Potential Gate to Source
Where is the Threshold Voltage of MOSFET calculator used?
Among many, Threshold Voltage of MOSFET calculator is widely used in real life applications like {FormulaUses}. Here are few more real life examples -
{FormulaExamplesList}
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