## Maximum Input Voltage CMOS Solution

STEP 0: Pre-Calculation Summary
Formula Used
Maximum Input Voltage CMOS = (2*Output Voltage for Max Input+(Threshold Voltage of PMOS Without Body Bias)-Supply Voltage+Transconductance Ratio*Threshold Voltage of NMOS Without Body Bias)/(1+Transconductance Ratio)
VIL = (2*Voutput+(VT0,p)-VDD+Kr*VT0,n)/(1+Kr)
This formula uses 6 Variables
Variables Used
Maximum Input Voltage CMOS - (Measured in Volt) - Maximum Input Voltage CMOS is the highest voltage level that can be applied to the input terminal of a CMOS device without causing damage to its internal components.
Output Voltage for Max Input - (Measured in Volt) - Output voltage for max input is the voltage level produced by a device or circuit at its output terminal when the maximum allowable input voltage is applied.
Threshold Voltage of PMOS Without Body Bias - (Measured in Volt) - Threshold Voltage of PMOS Without Body Bias CMOS is defined as the threshold voltage of the PMOS when substrate terminal is at ground (0) voltage.
Supply Voltage - (Measured in Volt) - Supply voltage refers to the voltage level provided by a power source to an electrical circuit or device, serving as the potential difference for current flow and operation.
Transconductance Ratio - Transconductance ratio is the ratio of the transconductance of one device (e.g., transistor) to another, often used to compare or characterize their performance or behavior in circuits.
Threshold Voltage of NMOS Without Body Bias - (Measured in Volt) - Threshold voltage of NMOS without body bias is the minimum input voltage required to switch an NMOS transistor when no additional bias voltage is applied to the substrate (body).
STEP 1: Convert Input(s) to Base Unit
Output Voltage for Max Input: 3.14 Volt --> 3.14 Volt No Conversion Required
Threshold Voltage of PMOS Without Body Bias: -0.7 Volt --> -0.7 Volt No Conversion Required
Supply Voltage: 3.3 Volt --> 3.3 Volt No Conversion Required
Transconductance Ratio: 2.5 --> No Conversion Required
Threshold Voltage of NMOS Without Body Bias: 0.6 Volt --> 0.6 Volt No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
VIL = (2*Voutput+(VT0,p)-VDD+Kr*VT0,n)/(1+Kr) --> (2*3.14+((-0.7))-3.3+2.5*0.6)/(1+2.5)
Evaluating ... ...
VIL = 1.08
STEP 3: Convert Result to Output's Unit
1.08 Volt --> No Conversion Required
1.08 Volt <-- Maximum Input Voltage CMOS
(Calculation completed in 00.004 seconds)
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Created by Priyanka Patel
Lalbhai Dalpatbhai College of engineering (LDCE), Ahmedabad
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Chandigarh University (CU), Punjab
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## <CMOS Inverters Calculators

Threshold Voltage CMOS
​ Go Threshold Voltage = (Threshold Voltage of NMOS Without Body Bias+sqrt(1/Transconductance Ratio)*(Supply Voltage+(Threshold Voltage of PMOS Without Body Bias)))/(1+sqrt(1/Transconductance Ratio))
Maximum Input Voltage CMOS
​ Go Maximum Input Voltage CMOS = (2*Output Voltage for Max Input+(Threshold Voltage of PMOS Without Body Bias)-Supply Voltage+Transconductance Ratio*Threshold Voltage of NMOS Without Body Bias)/(1+Transconductance Ratio)
Maximum Input Voltage for Symmetric CMOS
​ Go Maximum Input Voltage Symmetric CMOS = (3*Supply Voltage+2*Threshold Voltage of NMOS Without Body Bias)/8
Noise Margin for High Signal CMOS
​ Go Noise Margin for High Signal = Maximum Output Voltage-Minimum Input Voltage

## Maximum Input Voltage CMOS Formula

Maximum Input Voltage CMOS = (2*Output Voltage for Max Input+(Threshold Voltage of PMOS Without Body Bias)-Supply Voltage+Transconductance Ratio*Threshold Voltage of NMOS Without Body Bias)/(1+Transconductance Ratio)
VIL = (2*Voutput+(VT0,p)-VDD+Kr*VT0,n)/(1+Kr)

## When the logic '0' is considered as input in the CMOS inverter circuit?

Any input voltage between the range of 0 and Maximum input Voltage(Vil) which can be interpreted as '0' is considered as logic '0'.

## How to Calculate Maximum Input Voltage CMOS?

Maximum Input Voltage CMOS calculator uses Maximum Input Voltage CMOS = (2*Output Voltage for Max Input+(Threshold Voltage of PMOS Without Body Bias)-Supply Voltage+Transconductance Ratio*Threshold Voltage of NMOS Without Body Bias)/(1+Transconductance Ratio) to calculate the Maximum Input Voltage CMOS, Maximum Input Voltage CMOS refers to the highest voltage level that can be safely applied to the input terminal of a CMOS device without causing damage to its internal components, ensuring reliable operation within specified voltage limits. Maximum Input Voltage CMOS is denoted by VIL symbol.

How to calculate Maximum Input Voltage CMOS using this online calculator? To use this online calculator for Maximum Input Voltage CMOS, enter Output Voltage for Max Input (Voutput), Threshold Voltage of PMOS Without Body Bias (VT0,p), Supply Voltage (VDD), Transconductance Ratio (Kr) & Threshold Voltage of NMOS Without Body Bias (VT0,n) and hit the calculate button. Here is how the Maximum Input Voltage CMOS calculation can be explained with given input values -> 1.08 = (2*3.14+((-0.7))-3.3+2.5*0.6)/(1+2.5).

### FAQ

What is Maximum Input Voltage CMOS?
Maximum Input Voltage CMOS refers to the highest voltage level that can be safely applied to the input terminal of a CMOS device without causing damage to its internal components, ensuring reliable operation within specified voltage limits and is represented as VIL = (2*Voutput+(VT0,p)-VDD+Kr*VT0,n)/(1+Kr) or Maximum Input Voltage CMOS = (2*Output Voltage for Max Input+(Threshold Voltage of PMOS Without Body Bias)-Supply Voltage+Transconductance Ratio*Threshold Voltage of NMOS Without Body Bias)/(1+Transconductance Ratio). Output voltage for max input is the voltage level produced by a device or circuit at its output terminal when the maximum allowable input voltage is applied, Threshold Voltage of PMOS Without Body Bias CMOS is defined as the threshold voltage of the PMOS when substrate terminal is at ground (0) voltage, Supply voltage refers to the voltage level provided by a power source to an electrical circuit or device, serving as the potential difference for current flow and operation, Transconductance ratio is the ratio of the transconductance of one device (e.g., transistor) to another, often used to compare or characterize their performance or behavior in circuits & Threshold voltage of NMOS without body bias is the minimum input voltage required to switch an NMOS transistor when no additional bias voltage is applied to the substrate (body).
How to calculate Maximum Input Voltage CMOS?
Maximum Input Voltage CMOS refers to the highest voltage level that can be safely applied to the input terminal of a CMOS device without causing damage to its internal components, ensuring reliable operation within specified voltage limits is calculated using Maximum Input Voltage CMOS = (2*Output Voltage for Max Input+(Threshold Voltage of PMOS Without Body Bias)-Supply Voltage+Transconductance Ratio*Threshold Voltage of NMOS Without Body Bias)/(1+Transconductance Ratio). To calculate Maximum Input Voltage CMOS, you need Output Voltage for Max Input (Voutput), Threshold Voltage of PMOS Without Body Bias (VT0,p), Supply Voltage (VDD), Transconductance Ratio (Kr) & Threshold Voltage of NMOS Without Body Bias (VT0,n). With our tool, you need to enter the respective value for Output Voltage for Max Input, Threshold Voltage of PMOS Without Body Bias, Supply Voltage, Transconductance Ratio & Threshold Voltage of NMOS Without Body Bias 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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