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Adjacent Capacitance Formula

GoGround to Agression Capacitance Formula

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Adjacent capacitance is the capacitance at adjacent point. Check FAQs

C adj = \frac{V tm \cdot C gnd}{V agr - V tm}

C_adj - Adjacent Capacitance?V_tm - Victim Voltage?C_gnd - Ground Capacitance?V_agr - Agressor Voltage?

Adjacent Capacitance Example

With values

With units

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Here is how the Adjacent Capacitance equation looks like with Values.

Here is how the Adjacent Capacitance equation looks like with Units.

Here is how the Adjacent Capacitance equation looks like.

7.9989 = \frac{12.75 \cdot 2.98}{17.5 - 12.75}

7.9989pF = \frac{12.75V \cdot 2.98pF}{17.5V - 12.75V}

7.9989 = \frac{12.75 \cdot 2.98}{17.5 - 12.75}

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Adjacent Capacitance Solution

Follow our step by step solution on how to calculate Adjacent Capacitance?

FIRST Step Consider the formula

C adj = \frac{V tm \cdot C gnd}{V agr - V tm}

Next Step Substitute values of Variables

∴

C adj = \frac{12.75V \cdot 2.98pF}{17.5V - 12.75V}

Next Step Convert Units

∴

C adj = \frac{12.75V \cdot 3E-12F}{17.5V - 12.75V}

Next Step Prepare to Evaluate

∴

C adj = \frac{12.75 \cdot 3E-12}{17.5 - 12.75}

Next Step Evaluate

∴

C adj = 7.99894736842105E-12F

Next Step Convert to Output's Unit

∴

C adj = 7.99894736842105pF

LAST Step Rounding Answer

∴

C adj = 7.9989pF

Adjacent Capacitance Formula Elements

Variables

Adjacent Capacitance

Adjacent capacitance is the capacitance at adjacent point.

Symbol: C_adj

Measurement: CapacitanceUnit: pF

Note: Value should be greater than 0.

Formulas to find Adjacent Capacitance

Victim Voltage

Victim Voltage is calculated when the victim being actively driven, then the driver will supply current to oppose to reduce the victim's noise.

Symbol: V_tm

Measurement: Electric PotentialUnit: V

Note: Value should be greater than 0.

Formulas to find Victim Voltage

Ground Capacitance

Ground Capacitance is the capacitance at the ground of the CMOS Circuit.

Symbol: C_gnd

Measurement: CapacitanceUnit: pF

Note: Value should be greater than 0.

Formulas to find Ground Capacitance

Agressor Voltage

Agressor Voltage refers to the avoided voltage in a CMOS circuit, which is typically a small positive voltage added to the input signal to avoid unwanted triggering of the circuit.

Symbol: V_agr

Measurement: Electric PotentialUnit: V

Note: Value should be greater than 0.

Formulas to find Agressor Voltage

Other Formulas to find Adjacent Capacitance

Go Ground to Agression Capacitance

C adj = \frac{(R vi \cdot k \cdot C gnd) - (R agr \cdot C ga)}{R agr - R vi \cdot k}

Other formulas in CMOS Design Characteristics category

Go Static Current

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

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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 Adjacent Capacitance?

Adjacent Capacitance evaluator uses Adjacent Capacitance = (Victim Voltage*Ground Capacitance)/(Agressor Voltage-Victim Voltage) to evaluate the Adjacent Capacitance, The Adjacent capacitance formula is defined as the capacitance that is adjacent to the node Ae wire A switches while B is supposed to remain constant. Adjacent Capacitance is denoted by C_adj symbol.

How to evaluate Adjacent Capacitance using this online evaluator? To use this online evaluator for Adjacent Capacitance, enter Victim Voltage (V_tm), Ground Capacitance (C_gnd) & Agressor Voltage (V_agr) and hit the calculate button.

FAQs on Adjacent Capacitance

What is the formula to find Adjacent Capacitance?

The formula of Adjacent Capacitance is expressed as Adjacent Capacitance = (Victim Voltage*Ground Capacitance)/(Agressor Voltage-Victim Voltage). Here is an example- 8.1E+12 = (12.75*2.98E-12)/(17.5-12.75).

How to calculate Adjacent Capacitance?

With Victim Voltage (V_tm), Ground Capacitance (C_gnd) & Agressor Voltage (V_agr) we can find Adjacent Capacitance using the formula - Adjacent Capacitance = (Victim Voltage*Ground Capacitance)/(Agressor Voltage-Victim Voltage).

What are the other ways to Calculate Adjacent Capacitance?

Here are the different ways to Calculate Adjacent Capacitance-

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

Can the Adjacent Capacitance be negative?

No, the Adjacent Capacitance, measured in Capacitance cannot be negative.

Which unit is used to measure Adjacent Capacitance?

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

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Adjacent Capacitance Formula

​GoGround to Agression Capacitance Formula

Adjacent Capacitance Example

Adjacent Capacitance Solution

Adjacent Capacitance Formula Elements

Other Formulas to find Adjacent Capacitance

Other formulas in CMOS Design Characteristics category

How to Evaluate Adjacent Capacitance?

FAQs on Adjacent Capacitance

Variable Name

GoGround to Agression Capacitance Formula