Load Capacitance of Cascaded Inverter CMOS Formula

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Inverter CMOS Load Capacitance is the capacitance driven by a CMOS inverter's output, including wiring, input capacitances of connected gates, and parasitic capacitances. Check FAQs
Cload=Cgd,p+Cgd,n+Cdb,p+Cdb,n+Cin+Cg
Cload - Inverter CMOS Load Capacitance?Cgd,p - PMOS Gate Drain Capacitance?Cgd,n - NMOS Gate Drain Capacitance?Cdb,p - PMOS Drain Bulk Capacitance?Cdb,n - NMOS Drain Bulk Capacitance?Cin - Inverter CMOS Internal Capacitance?Cg - Inverter CMOS Gate Capacitance?

Load Capacitance of Cascaded Inverter CMOS Example

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Here is how the Load Capacitance of Cascaded Inverter CMOS equation looks like with Values.

Here is how the Load Capacitance of Cascaded Inverter CMOS equation looks like with Units.

Here is how the Load Capacitance of Cascaded Inverter CMOS equation looks like.

0.93Edit=0.15Edit+0.1Edit+0.25Edit+0.2Edit+0.05Edit+0.18Edit
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Load Capacitance of Cascaded Inverter CMOS Solution

Follow our step by step solution on how to calculate Load Capacitance of Cascaded Inverter CMOS?

FIRST Step Consider the formula
Cload=Cgd,p+Cgd,n+Cdb,p+Cdb,n+Cin+Cg
Next Step Substitute values of Variables
Cload=0.15fF+0.1fF+0.25fF+0.2fF+0.05fF+0.18fF
Next Step Convert Units
Cload=1.5E-16F+1E-16F+2.5E-16F+2E-16F+5E-17F+1.8E-16F
Next Step Prepare to Evaluate
Cload=1.5E-16+1E-16+2.5E-16+2E-16+5E-17+1.8E-16
Next Step Evaluate
Cload=9.3E-16F
LAST Step Convert to Output's Unit
Cload=0.93fF

Load Capacitance of Cascaded Inverter CMOS Formula Elements

Variables
Inverter CMOS Load Capacitance
Inverter CMOS Load Capacitance is the capacitance driven by a CMOS inverter's output, including wiring, input capacitances of connected gates, and parasitic capacitances.
Symbol: Cload
Measurement: CapacitanceUnit: fF
Note: Value should be greater than 0.
PMOS Gate Drain Capacitance
PMOS gate drain capacitance is the capacitance between the gate and drain terminals of a PMOS transistor, impacting its switching speed and power consumption in digital circuit applications.
Symbol: Cgd,p
Measurement: CapacitanceUnit: fF
Note: Value should be greater than 0.
NMOS Gate Drain Capacitance
NMOS gate drain capacitance is the capacitance between the gate and drain terminals of an NMOS transistor, influencing its switching speed and power consumption in digital circuit applications.
Symbol: Cgd,n
Measurement: CapacitanceUnit: fF
Note: Value should be greater than 0.
PMOS Drain Bulk Capacitance
PMOS drain bulk capacitance refers to the capacitance between the drain terminal and the substrate of a PMOS transistor, influencing its behavior in various circuit applications.
Symbol: Cdb,p
Measurement: CapacitanceUnit: fF
Note: Value should be greater than 0.
NMOS Drain Bulk Capacitance
NMOS drain bulk capacitance refers to the capacitance between the drain terminal and the bulk (substrate) of an NMOS transistor, impacting its switching characteristics and overall performance.
Symbol: Cdb,n
Measurement: CapacitanceUnit: fF
Note: Value should be greater than 0.
Inverter CMOS Internal Capacitance
Inverter CMOS Internal Capacitance refers to the parasitic capacitances within a CMOS inverter, including junction and overlap capacitances, affecting its switching speed and power consumption.
Symbol: Cin
Measurement: CapacitanceUnit: fF
Note: Value should be greater than 0.
Inverter CMOS Gate Capacitance
Inverter CMOS Gate Capacitance is the total capacitance at the gate terminal of a CMOS inverter, impacting switching speed and power consumption, consisting of gate-to-source.
Symbol: Cg
Measurement: CapacitanceUnit: fF
Note: Value should be greater than 0.

Other formulas in CMOS Inverters category

​Go Noise Margin for High Signal CMOS
NMH=VOH-VIH
​Go Maximum Input Voltage for Symmetric CMOS
VIL(sym)=3VDD+2VT0,n8

How to Evaluate Load Capacitance of Cascaded Inverter CMOS?

Load Capacitance of Cascaded Inverter CMOS evaluator uses Inverter CMOS Load Capacitance = PMOS Gate Drain Capacitance+NMOS Gate Drain Capacitance+PMOS Drain Bulk Capacitance+NMOS Drain Bulk Capacitance+Inverter CMOS Internal Capacitance+Inverter CMOS Gate Capacitance to evaluate the Inverter CMOS Load Capacitance, Load Capacitance of Cascaded Inverter CMOS refers to the total capacitance at the output of multiple interconnected CMOS inverters, including the sum of parasitic and intentional capacitances, influencing the circuit's switching speed, power consumption, and overall performance. Inverter CMOS Load Capacitance is denoted by Cload symbol.

How to evaluate Load Capacitance of Cascaded Inverter CMOS using this online evaluator? To use this online evaluator for Load Capacitance of Cascaded Inverter CMOS, enter PMOS Gate Drain Capacitance (Cgd,p), NMOS Gate Drain Capacitance (Cgd,n), PMOS Drain Bulk Capacitance (Cdb,p), NMOS Drain Bulk Capacitance (Cdb,n), Inverter CMOS Internal Capacitance (Cin) & Inverter CMOS Gate Capacitance (Cg) and hit the calculate button.

FAQs on Load Capacitance of Cascaded Inverter CMOS

What is the formula to find Load Capacitance of Cascaded Inverter CMOS?
The formula of Load Capacitance of Cascaded Inverter CMOS is expressed as Inverter CMOS Load Capacitance = PMOS Gate Drain Capacitance+NMOS Gate Drain Capacitance+PMOS Drain Bulk Capacitance+NMOS Drain Bulk Capacitance+Inverter CMOS Internal Capacitance+Inverter CMOS Gate Capacitance. Here is an example- 9.3E+14 = 1.5E-16+1E-16+2.5E-16+2E-16+5E-17+1.8E-16.
How to calculate Load Capacitance of Cascaded Inverter CMOS?
With PMOS Gate Drain Capacitance (Cgd,p), NMOS Gate Drain Capacitance (Cgd,n), PMOS Drain Bulk Capacitance (Cdb,p), NMOS Drain Bulk Capacitance (Cdb,n), Inverter CMOS Internal Capacitance (Cin) & Inverter CMOS Gate Capacitance (Cg) we can find Load Capacitance of Cascaded Inverter CMOS using the formula - Inverter CMOS Load Capacitance = PMOS Gate Drain Capacitance+NMOS Gate Drain Capacitance+PMOS Drain Bulk Capacitance+NMOS Drain Bulk Capacitance+Inverter CMOS Internal Capacitance+Inverter CMOS Gate Capacitance.
Can the Load Capacitance of Cascaded Inverter CMOS be negative?
No, the Load Capacitance of Cascaded Inverter CMOS, measured in Capacitance cannot be negative.
Which unit is used to measure Load Capacitance of Cascaded Inverter CMOS?
Load Capacitance of Cascaded Inverter CMOS is usually measured using the Femtofarad[fF] for Capacitance. Farad[fF], Kilofarad[fF], Millifarad[fF] are the few other units in which Load Capacitance of Cascaded Inverter CMOS can be measured.
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