Capacitance Offpath Calculator

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✖Total capacitance in stage is defined as the total capacitance of the stage of on and off.ⓘ Total Capacitance in Stage [C_t]			+10% -10%
✖Capacitance Onpath is defined as the capacitance along the analyzing path.ⓘ Capacitance Onpath [C_onpath]			+10% -10%

✖Capacitance Offpath is defined as the capacitance of the off-path capacitance of the logic gate.ⓘ Capacitance Offpath [C_offpath]

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Formula

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Capacitance Offpath

Formula

`"C"_{"offpath"} = "C"_{"t"}-"C"_{"onpath"}`

Example

`"9pF"="12.2pF"-"3.2pF"`

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Capacitance Offpath Solution

STEP 0: Pre-Calculation Summary

Formula Used

Capacitance Offpath = Total Capacitance in Stage-Capacitance Onpath
C_offpath = C_t-C_onpath
This formula uses 3 Variables

Variables Used

Capacitance Offpath - (Measured in Farad) - Capacitance Offpath is defined as the capacitance of the off-path capacitance of the logic gate.
Total Capacitance in Stage - (Measured in Farad) - Total capacitance in stage is defined as the total capacitance of the stage of on and off.
Capacitance Onpath - (Measured in Farad) - Capacitance Onpath is defined as the capacitance along the analyzing path.

STEP 1: Convert Input(s) to Base Unit

Total Capacitance in Stage: 12.2 Picofarad --> 1.22E-11 Farad (Check conversion here)
Capacitance Onpath: 3.2 Picofarad --> 3.2E-12 Farad (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

C_offpath = C_t-C_onpath --> 1.22E-11-3.2E-12

Evaluating ... ...

C_offpath = 9E-12

STEP 3: Convert Result to Output's Unit

9E-12 Farad -->9 Picofarad (Check conversion here)

FINAL ANSWER

9 Picofarad <-- Capacitance Offpath

(Calculation completed in 00.004 seconds)

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< 24 CMOS Design Characteristics Calculators

Ground to Agression Capacitance

Go Adjacent Capacitance = ((Victim Driver*Time Constant Ratio*Ground Capacitance)-(Agression Driver*Ground A Capacitance))/(Agression Driver-Victim Driver*Time Constant Ratio)

Victim Driver

Go Victim Driver = (Agression Driver*(Ground A Capacitance+Adjacent Capacitance))/(Time Constant Ratio*(Adjacent Capacitance+Ground Capacitance))

Agression Driver

Go Agression Driver = (Victim Driver*Time Constant Ratio*(Adjacent Capacitance+Ground Capacitance))/(Ground A Capacitance+Adjacent Capacitance)

Thermal Voltage of CMOS

Go Thermal Voltage = Built-in Potential/ln((Acceptor Concentration*Donor Concentration)/(Intrinsic Electron Concentration^2))

Built-in Potential

Go Built-in Potential = Thermal Voltage*ln((Acceptor Concentration*Donor Concentration)/(Intrinsic Electron Concentration^2))

Agressor Voltage

Go Agressor Voltage = (Victim Voltage*(Ground Capacitance+Adjacent Capacitance))/Adjacent Capacitance

Victim Voltage

Go Victim Voltage = (Agressor Voltage*Adjacent Capacitance)/(Ground Capacitance+Adjacent Capacitance)

Adjacent Capacitance

Go Adjacent Capacitance = (Victim Voltage*Ground Capacitance)/(Agressor Voltage-Victim Voltage)

Branching Effort

Go Branching Effort = (Capacitance Onpath+Capacitance Offpath)/Capacitance Onpath

Output Clock Phase

Go Output Clock Phase = 2*pi*VCO Control Voltage*VCO Gain

Total Capacitance Seen by Stage

Go Total Capacitance in Stage = Capacitance Onpath+Capacitance Offpath

Capacitance Offpath

Go Capacitance Offpath = Total Capacitance in Stage-Capacitance Onpath

Capacitance Onpath

Go Capacitance Onpath = Total Capacitance in Stage-Capacitance Offpath

Time Constant Ratio of Agression to Victim

Go Time Constant Ratio = Agression Time Constant/Victim Time Constant

Agression Time Constant

Go Agression Time Constant = Time Constant Ratio*Victim Time Constant

Victim Time Constant

Go Victim Time Constant = Agression Time Constant/Time Constant Ratio

Off-Path Capacitance of CMOS

Go Capacitance Offpath = Capacitance Onpath*(Branching Effort-1)

Change in Frequency Clock

Go Change in Frequency of Clock = VCO Gain*VCO Control Voltage

VCO Single Gain Factor

Go VCO Gain = Change in Frequency of Clock/VCO Control Voltage

VCO Control Voltage

Go VCO Control Voltage = Lock Voltage+VCO Offset Voltage

VCO Offset Voltage

Go VCO Offset Voltage = VCO Control Voltage-Lock Voltage

Lock Voltage

Go Lock Voltage = VCO Control Voltage-VCO Offset Voltage

Static Power Dissipation

Go Static Power = Static Current*Base Collector Voltage

Static Current

Go Static Current = Static Power/Base Collector Voltage

Capacitance Offpath Formula

Capacitance Offpath = Total Capacitance in Stage-Capacitance Onpath
C_offpath = C_t-C_onpath

What is branching effort?

Branching effort is a kind of effort to account for branching between stages of a path. This branching effort b is the ratio of the total capacitance seen by a stage to the capacitance on the path. Also it is the product of the branching efforts between stages.

How to Calculate Capacitance Offpath?

Capacitance Offpath calculator uses Capacitance Offpath = Total Capacitance in Stage-Capacitance Onpath to calculate the Capacitance Offpath, The Capacitance Offpath formula is defined as the capacitance of the off-path capacitance of the logic gate. Capacitance Offpath is denoted by C_offpath symbol.

How to calculate Capacitance Offpath using this online calculator? To use this online calculator for Capacitance Offpath, enter Total Capacitance in Stage (C_t) & Capacitance Onpath (C_onpath) and hit the calculate button. Here is how the Capacitance Offpath calculation can be explained with given input values -> 8.8E+12 = 1.22E-11-3.2E-12.

FAQ

What is Capacitance Offpath?

The Capacitance Offpath formula is defined as the capacitance of the off-path capacitance of the logic gate and is represented as C_offpath = C_t-C_onpath or Capacitance Offpath = Total Capacitance in Stage-Capacitance Onpath. Total capacitance in stage is defined as the total capacitance of the stage of on and off & Capacitance Onpath is defined as the capacitance along the analyzing path.

How to calculate Capacitance Offpath?

The Capacitance Offpath formula is defined as the capacitance of the off-path capacitance of the logic gate is calculated using Capacitance Offpath = Total Capacitance in Stage-Capacitance Onpath. To calculate Capacitance Offpath, you need Total Capacitance in Stage (C_t) & Capacitance Onpath (C_onpath). With our tool, you need to enter the respective value for Total Capacitance in Stage & Capacitance Onpath 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 Capacitance Offpath?

In this formula, Capacitance Offpath uses Total Capacitance in Stage & Capacitance Onpath. We can use 1 other way(s) to calculate the same, which is/are as follows -

Capacitance Offpath = Capacitance Onpath*(Branching Effort-1)

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