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Off-Path Capacitance of CMOS Formula

GoCapacitance Offpath Formula

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Capacitance Offpath is defined as the capacitance of the off-path capacitance of the logic gate. Check FAQs

C offpath = C onpath \cdot (b - 1)

C_offpath - Capacitance Offpath?C_onpath - Capacitance Onpath?b - Branching Effort?

Off-Path Capacitance of CMOS Example

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Here is how the Off-Path Capacitance of CMOS equation looks like with Values.

Here is how the Off-Path Capacitance of CMOS equation looks like with Units.

Here is how the Off-Path Capacitance of CMOS equation looks like.

8.992 = 3.2 \cdot (3.81 - 1)

8.992pF = 3.2pF \cdot (3.81 - 1)

8.992 = 3.2 \cdot (3.81 - 1)

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Off-Path Capacitance of CMOS Solution

Follow our step by step solution on how to calculate Off-Path Capacitance of CMOS?

FIRST Step Consider the formula

C offpath = C onpath \cdot (b - 1)

Next Step Substitute values of Variables

∴

C offpath = 3.2pF \cdot (3.81 - 1)

Next Step Convert Units

∴

C offpath = 3.2E-12F \cdot (3.81 - 1)

Next Step Prepare to Evaluate

∴

C offpath = 3.2E-12 \cdot (3.81 - 1)

Next Step Evaluate

∴

C offpath = 8.992E-12F

LAST Step Convert to Output's Unit

∴

C offpath = 8.992pF

Off-Path Capacitance of CMOS Formula Elements

Variables

Capacitance Offpath

Capacitance Offpath is defined as the capacitance of the off-path capacitance of the logic gate.

Symbol: C_offpath

Measurement: CapacitanceUnit: pF

Note: Value should be greater than 0.

Formulas to find Capacitance Offpath

Capacitance Onpath

Capacitance Onpath is defined as the capacitance along the analyzing path.

Symbol: C_onpath

Measurement: CapacitanceUnit: pF

Note: Value should be greater than 0.

Formulas to find Capacitance Onpath

Branching Effort

Branching Effort current is directed along the path we are analyzing, and some is directed off that path.

Symbol: b

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Branching Effort

Other Formulas to find Capacitance Offpath

Go Capacitance Offpath

C offpath = C t - C onpath

Other formulas in CMOS Design Characteristics category

Go Static Current

i static = \frac{P static}{V bc}

Go Built-in Potential

ψ o = V t \cdot \ln (\frac{N a \cdot N d}{{n i}^{2}})

Go Change in Frequency Clock

Δf = K vco \cdot V ctrl

Go Capacitance Onpath

C onpath = C t - C offpath

How to Evaluate Off-Path Capacitance of CMOS?

Off-Path Capacitance of CMOS evaluator uses Capacitance Offpath = Capacitance Onpath*(Branching Effort-1) to evaluate the Capacitance Offpath, Off-Path Capacitance of CMOS refers to the capacitive charging of the substrate due to the connection of the gates to the substrate through the gate electrodes. Capacitance Offpath is denoted by C_offpath symbol.

How to evaluate Off-Path Capacitance of CMOS using this online evaluator? To use this online evaluator for Off-Path Capacitance of CMOS, enter Capacitance Onpath (C_onpath) & Branching Effort (b) and hit the calculate button.

FAQs on Off-Path Capacitance of CMOS

What is the formula to find Off-Path Capacitance of CMOS?

The formula of Off-Path Capacitance of CMOS is expressed as Capacitance Offpath = Capacitance Onpath*(Branching Effort-1). Here is an example- -480000000000 = 3.2E-12*(3.81-1).

How to calculate Off-Path Capacitance of CMOS?

With Capacitance Onpath (C_onpath) & Branching Effort (b) we can find Off-Path Capacitance of CMOS using the formula - Capacitance Offpath = Capacitance Onpath*(Branching Effort-1).

What are the other ways to Calculate Capacitance Offpath?

Here are the different ways to Calculate Capacitance Offpath-

Capacitance Offpath=Total Capacitance in Stage-Capacitance Onpath

Can the Off-Path Capacitance of CMOS be negative?

No, the Off-Path Capacitance of CMOS, measured in Capacitance cannot be negative.

Which unit is used to measure Off-Path Capacitance of CMOS?

Off-Path Capacitance of CMOS is usually measured using the Picofarad[pF] for Capacitance. Farad[pF], Kilofarad[pF], Millifarad[pF] are the few other units in which Off-Path Capacitance of CMOS can be measured.

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Off-Path Capacitance of CMOS Formula

​GoCapacitance Offpath Formula

Off-Path Capacitance of CMOS Example

Off-Path Capacitance of CMOS Solution

Off-Path Capacitance of CMOS Formula Elements

Other Formulas to find Capacitance Offpath

Other formulas in CMOS Design Characteristics category

How to Evaluate Off-Path Capacitance of CMOS?

FAQs on Off-Path Capacitance of CMOS

Variable Name

GoCapacitance Offpath Formula