FormulaDen.com

Physics Chemistry Math Chemical Engineering Civil Electrical Electronics Electronics and Instrumentation Materials Science Mechanical Production Engineering Financial Health

Threshold Voltage Formula

Fx Copy

LaTeX Copy

Threshold voltage of transistor is the minimum gate to source voltage required to create conducting path between the source and drain terminals. Check FAQs

V t = V gc - (\frac{Q ch}{C g})

V_t - Threshold Voltage?V_gc - Gate to Channel Voltage?Q_ch - Channel Charge?C_g - Gate Capacitance?

Threshold Voltage Example

With values

With units

Only example

Here is how the Threshold Voltage equation looks like with Values.

Here is how the Threshold Voltage equation looks like with Units.

Here is how the Threshold Voltage equation looks like.

0.3007 = 7.011 - (\frac{0.4}{59.61})

0.3007V = 7.011V - (\frac{0.4mC}{59.61μF})

0.3007 = 7.011 - (\frac{0.4}{59.61})

Tip: Use pencil ( Pencil

) icon above to edit Input Values and Units.

Calculate

Recalculate

Solution

Copy

Reset

You are here -

Home » Category

Engineering » Category

Electronics » Category

VLSI Fabrication » fx Threshold Voltage

Threshold Voltage Solution

Follow our step by step solution on how to calculate Threshold Voltage?

FIRST Step Consider the formula

V t = V gc - (\frac{Q ch}{C g})

Next Step Substitute values of Variables

∴

V t = 7.011V - (\frac{0.4mC}{59.61μF})

Next Step Convert Units

∴

V t = 7.011V - (\frac{0.0004C}{6E-5F})

Next Step Prepare to Evaluate

∴

V t = 7.011 - (\frac{0.0004}{6E-5})

Next Step Evaluate

∴

V t = 0.300716490521724V

LAST Step Rounding Answer

∴

V t = 0.3007V

Threshold Voltage Formula Elements

Variables

Threshold Voltage

Threshold voltage of transistor is the minimum gate to source voltage required to create conducting path between the source and drain terminals.

Symbol: V_t

Measurement: Electric PotentialUnit: V

Note: Value should be greater than 0.

Formulas to find Threshold Voltage

Gate to Channel Voltage

Gate to Channel Voltage is defined as the drain-source on-state resistance is larger than rated value when gate voltage is around threshold voltage.

Symbol: V_gc

Measurement: Electric PotentialUnit: V

Note: Value should be greater than 0.

Formulas to find Gate to Channel Voltage

Channel Charge

Channel Charge is defined as force experienced of a matter, when placed in an electromagnetic field.

Symbol: Q_ch

Measurement: Electric ChargeUnit: mC

Note: Value can be positive or negative.

Formulas to find Channel Charge

Gate Capacitance

Gate Capacitance is the capacitance of the gate terminal of a field-effect transistor.

Symbol: C_g

Measurement: CapacitanceUnit: μF

Note: Value should be greater than 0.

Formulas to find Gate Capacitance

Other formulas in VLSI Material Optimization category

Go Body Effect Coefficient

γ = mod \underset{̲}{u} s (\frac{V t - V t0}{\sqrt{Φ s + (V sb)} - \sqrt{Φ s}})

Go Channel Charge

Q ch = C g \cdot (V gc - V t)

Go Critical Voltage

V x = E x \cdot E ch

Go DIBL Coefficient

η = \frac{V t0 - V t}{V ds}

How to Evaluate Threshold Voltage?

Threshold Voltage evaluator uses Threshold Voltage = Gate to Channel Voltage-(Channel Charge/Gate Capacitance) to evaluate the Threshold Voltage, The Threshold Voltage formula is defined as the minimum gate-to-source voltage VGS (th) that is needed to create a conducting path between the source and drain terminals. It is an important scaling factor to maintain power efficiency. Threshold Voltage is denoted by V_t symbol.

How to evaluate Threshold Voltage using this online evaluator? To use this online evaluator for Threshold Voltage, enter Gate to Channel Voltage (V_gc), Channel Charge (Q_ch) & Gate Capacitance (C_g) and hit the calculate button.

FAQs on Threshold Voltage

What is the formula to find Threshold Voltage?

The formula of Threshold Voltage is expressed as Threshold Voltage = Gate to Channel Voltage-(Channel Charge/Gate Capacitance). Here is an example- 0.299716 = 7.011-(0.0004/5.961E-05).

How to calculate Threshold Voltage?

With Gate to Channel Voltage (V_gc), Channel Charge (Q_ch) & Gate Capacitance (C_g) we can find Threshold Voltage using the formula - Threshold Voltage = Gate to Channel Voltage-(Channel Charge/Gate Capacitance).

Can the Threshold Voltage be negative?

No, the Threshold Voltage, measured in Electric Potential cannot be negative.

Which unit is used to measure Threshold Voltage?

Threshold Voltage is usually measured using the Volt[V] for Electric Potential. Millivolt[V], Microvolt[V], Nanovolt[V] are the few other units in which Threshold Voltage can be measured.

Let Others Know

✖

Facebook

Twitter

Copied!

: Value
: Unit

Threshold Voltage Formula

Threshold Voltage Example

Threshold Voltage Solution

Threshold Voltage Formula Elements

Other formulas in VLSI Material Optimization category

How to Evaluate Threshold Voltage?

FAQs on Threshold Voltage

Variable Name