Lock Voltage Calculator

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CMOS Design Characteristics

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✖VCO Control Voltage is the allowable voltage in VCO.ⓘ VCO Control Voltage [V_ctrl]			+10% -10%
✖VCO Offset Voltage is defined as the voltage that must be applied between the two input terminals of an OPAMP to null or zero the output.ⓘ VCO Offset Voltage [V_offl]			+10% -10%

✖Lock voltage is defined as the sum of the value of voltage during lock of the voltage in an voltage controlled-oscillator.ⓘ Lock Voltage [V_lock]

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Formula

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Lock Voltage

Formula

`"V"_{"lock"} = "V"_{"ctrl"}-"V"_{"offl"}`

Example

`"2V"="7V"-"5V"`

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Lock Voltage Solution

STEP 0: Pre-Calculation Summary

Formula Used

Lock Voltage = VCO Control Voltage-VCO Offset Voltage
V_lock = V_ctrl-V_offl
This formula uses 3 Variables

Variables Used

Lock Voltage - (Measured in Volt) - Lock voltage is defined as the sum of the value of voltage during lock of the voltage in an voltage controlled-oscillator.
VCO Control Voltage - (Measured in Volt) - VCO Control Voltage is the allowable voltage in VCO.
VCO Offset Voltage - (Measured in Volt) - VCO Offset Voltage is defined as the voltage that must be applied between the two input terminals of an OPAMP to null or zero the output.

STEP 1: Convert Input(s) to Base Unit

VCO Control Voltage: 7 Volt --> 7 Volt No Conversion Required
VCO Offset Voltage: 5 Volt --> 5 Volt No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

V_lock = V_ctrl-V_offl --> 7-5

Evaluating ... ...

V_lock = 2

STEP 3: Convert Result to Output's Unit

2 Volt --> No Conversion Required

FINAL ANSWER

2 Volt <-- Lock Voltage

(Calculation completed in 00.021 seconds)

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Created by Shobhit Dimri

Bipin Tripathi Kumaon Institute of Technology (BTKIT), Dwarahat

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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

Lock Voltage Formula

Lock Voltage = VCO Control Voltage-VCO Offset Voltage
V_lock = V_ctrl-V_offl

What are the applications of VCO?

VCOs, whether in discrete, modular, or monolithic form, fill the need for voltage-based frequency control that is required in a number of applications. They are used in function generators, PLLs, frequency synthesizers, clock generators and analog music synthesizers.

How to Calculate Lock Voltage?

Lock Voltage calculator uses Lock Voltage = VCO Control Voltage-VCO Offset Voltage to calculate the Lock Voltage, The lock voltage formula is defined as the difference between a voltage controlled-oscillator to a small offset voltage. Lock Voltage is denoted by V_lock symbol.

How to calculate Lock Voltage using this online calculator? To use this online calculator for Lock Voltage, enter VCO Control Voltage (V_ctrl) & VCO Offset Voltage (V_offl) and hit the calculate button. Here is how the Lock Voltage calculation can be explained with given input values -> 2 = 7-5.

FAQ

What is Lock Voltage?

The lock voltage formula is defined as the difference between a voltage controlled-oscillator to a small offset voltage and is represented as V_lock = V_ctrl-V_offl or Lock Voltage = VCO Control Voltage-VCO Offset Voltage. VCO Control Voltage is the allowable voltage in VCO & VCO Offset Voltage is defined as the voltage that must be applied between the two input terminals of an OPAMP to null or zero the output.

How to calculate Lock Voltage?

The lock voltage formula is defined as the difference between a voltage controlled-oscillator to a small offset voltage is calculated using Lock Voltage = VCO Control Voltage-VCO Offset Voltage. To calculate Lock Voltage, you need VCO Control Voltage (V_ctrl) & VCO Offset Voltage (V_offl). With our tool, you need to enter the respective value for VCO Control Voltage & VCO Offset Voltage 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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