Capacitance Onpath 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 Offpath is defined as the capacitance of the off-path capacitance of the logic gate.ⓘ Capacitance Offpath [C_offpath]			+10% -10%

✖Capacitance Onpath is defined as the capacitance along the analyzing path.ⓘ Capacitance Onpath [C_onpath]

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Formula

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Capacitance Onpath

Formula

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

Example

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

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Capacitance Onpath Solution

STEP 0: Pre-Calculation Summary

Formula Used

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

Variables Used

Capacitance Onpath - (Measured in Farad) - Capacitance Onpath is defined as the capacitance along the analyzing path.
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 Offpath - (Measured in Farad) - Capacitance Offpath is defined as the capacitance of the off-path capacitance of the logic gate.

STEP 1: Convert Input(s) to Base Unit

Total Capacitance in Stage: 12.2 Picofarad --> 1.22E-11 Farad (Check conversion here)
Capacitance Offpath: 9 Picofarad --> 9E-12 Farad (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

C_onpath = C_t-C_offpath --> 1.22E-11-9E-12

Evaluating ... ...

C_onpath = 3.2E-12

STEP 3: Convert Result to Output's Unit

3.2E-12 Farad -->3.2 Picofarad (Check conversion here)

FINAL ANSWER

3.2 Picofarad <-- Capacitance Onpath

(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 Onpath Formula

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

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 Onpath?

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

How to calculate Capacitance Onpath using this online calculator? To use this online calculator for Capacitance Onpath, enter Total Capacitance in Stage (C_t) & Capacitance Offpath (C_offpath) and hit the calculate button. Here is how the Capacitance Onpath calculation can be explained with given input values -> 3E+12 = 1.22E-11-9E-12.

FAQ

What is Capacitance Onpath?

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

How to calculate Capacitance Onpath?

The Capacitance Onpath formula is defined as the capacitance of the on-path capacitance of the logic gate is calculated using Capacitance Onpath = Total Capacitance in Stage-Capacitance Offpath. To calculate Capacitance Onpath, you need Total Capacitance in Stage (C_t) & Capacitance Offpath (C_offpath). With our tool, you need to enter the respective value for Total Capacitance in Stage & Capacitance Offpath and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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