Drain Resistance of Cascode Amplifier Solution

STEP 0: Pre-Calculation Summary
Formula Used
Drain Resistance = (Output Voltage Gain/(MOSFET Primary Transconductance^2*Finite Output Resistance))
Rd = (Avo/(gmp^2*Rout))
This formula uses 4 Variables
Variables Used
Drain Resistance - (Measured in Ohm) - Drain resistance is the ratio of change in drain to source voltage to corresponding change in drain current for a constant gate to source voltage.
Output Voltage Gain - Output voltage gain is the difference between the output signal voltage level in decibels and the input signal voltage level in decibels.
MOSFET Primary Transconductance - (Measured in Siemens) - MOSFET Primary Transconductance is the change in the drain current divided by the small change in the gate/source voltage with a constant drain/source voltage.
Finite Output Resistance - (Measured in Ohm) - The finite output resistance is a measure of how much the transistor's output impedance varies with changes in the output voltage.
STEP 1: Convert Input(s) to Base Unit
Output Voltage Gain: 49.31 --> No Conversion Required
MOSFET Primary Transconductance: 19.77 Millisiemens --> 0.01977 Siemens (Check conversion here)
Finite Output Resistance: 0.35 Kilohm --> 350 Ohm (Check conversion here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Rd = (Avo/(gmp^2*Rout)) --> (49.31/(0.01977^2*350))
Evaluating ... ...
Rd = 360.457129231264
STEP 3: Convert Result to Output's Unit
360.457129231264 Ohm -->0.360457129231264 Kilohm (Check conversion here)
FINAL ANSWER
0.360457129231264 0.360457 Kilohm <-- Drain Resistance
(Calculation completed in 00.020 seconds)

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Birsa Institute of Technology (BIT), Sindri
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5 Cascode Ampifier Calculators

Open Circuit Bipolar Cascode Voltage Gain
Go Bipolar Cascode Voltage Gain = -MOSFET Primary Transconductance*(MOSFET Secondary Transconductance*Finite Output Resistance)*(1/Finite Output Resistance of Transistor 1+1/Small Signal Input Resistance)^-1
Drain Resistance of Cascode Amplifier
Go Drain Resistance = (Output Voltage Gain/(MOSFET Primary Transconductance^2*Finite Output Resistance))
Output voltage gain of MOS Cascode Amplifier
Go Output Voltage Gain = -MOSFET Primary Transconductance^2*Finite Output Resistance*Drain Resistance
Equivalent Resistance of Cascode Amplifier
Go Resistance between Drain and Ground = (1/Finite Output Resistance of Transistor 1+1/Input Resistance)^-1
Negative Voltage Gain of Cascode Amplifier
Go Negative Voltage Gain = -(MOSFET Primary Transconductance*Resistance between Drain and Ground)

15 Multi Stage Transistor Amplifiers Calculators

Open Circuit Bipolar Cascode Voltage Gain
Go Bipolar Cascode Voltage Gain = -MOSFET Primary Transconductance*(MOSFET Secondary Transconductance*Finite Output Resistance)*(1/Finite Output Resistance of Transistor 1+1/Small Signal Input Resistance)^-1
Output Resistance of Emitter Follower
Go Finite Resistance = (1/Load Resistance+1/Small Signal Voltage+1/Emitter Resistance)+(1/Base Impedance+1/Signal Resistance)/(Collector Base Current Gain+1)
Drain Resistance of Cascode Amplifier
Go Drain Resistance = (Output Voltage Gain/(MOSFET Primary Transconductance^2*Finite Output Resistance))
Output voltage gain of MOS Cascode Amplifier
Go Output Voltage Gain = -MOSFET Primary Transconductance^2*Finite Output Resistance*Drain Resistance
Collector Current in Active Region when Transistor Acts as Amplifier
Go Collector Current = Saturation Current*e^(Voltage across Base Emitter Junction/Threshold Voltage)
Saturation Current of Emitter Follower
Go Saturation Current = Collector Current/e^(Voltage across Base Emitter Junction/Threshold Voltage)
Equivalent Resistance of Cascode Amplifier
Go Resistance between Drain and Ground = (1/Finite Output Resistance of Transistor 1+1/Input Resistance)^-1
Negative Voltage Gain of Cascode Amplifier
Go Negative Voltage Gain = -(MOSFET Primary Transconductance*Resistance between Drain and Ground)
Input Resistance of Emitter Follower
Go Input Resistance = 1/(1/Signal Resistance in Base+1/Base Resistance)
Base Resistance across Emitter follower Junction
Go Base Resistance = High Frequency Constant*Emitter Resistance
Total Emitter Resistance of Emitter Follower
Go Emitter Resistance = Base Resistance/High Frequency Constant
Output Resistance of Transistor at Intrinsic Gain
Go Finite Output Resistance = Early Voltage/Collector Current
Collector Current of Emitter Follower Transistor
Go Collector Current = Early Voltage/Finite Output Resistance
Input Resistance of Transistor Amplifier
Go Input Resistance = Amplifier Input/Input Current
Input Voltage of Emitter Follower
Go Emitter Voltage = Base Voltage-0.7

Drain Resistance of Cascode Amplifier Formula

Drain Resistance = (Output Voltage Gain/(MOSFET Primary Transconductance^2*Finite Output Resistance))
Rd = (Avo/(gmp^2*Rout))

What are the applications of cascode amplifier?

The cascode amplifier is used to enhance the performance of an analog circuit. The utilization of cascode is a common method that can be used in the applications of transistors as well as vacuum tubes.

How to Calculate Drain Resistance of Cascode Amplifier?

Drain Resistance of Cascode Amplifier calculator uses Drain Resistance = (Output Voltage Gain/(MOSFET Primary Transconductance^2*Finite Output Resistance)) to calculate the Drain Resistance, The Drain Resistance of Cascode Amplifier is the resistance between the draining node and the source node. It is an important parameter in determining the performance of the amplifier, as it affects the input impedance and the output current. Drain Resistance is denoted by Rd symbol.

How to calculate Drain Resistance of Cascode Amplifier using this online calculator? To use this online calculator for Drain Resistance of Cascode Amplifier, enter Output Voltage Gain (Avo), MOSFET Primary Transconductance (gmp) & Finite Output Resistance (Rout) and hit the calculate button. Here is how the Drain Resistance of Cascode Amplifier calculation can be explained with given input values -> 0.00036 = (49.31/(0.01977^2*350)).

FAQ

What is Drain Resistance of Cascode Amplifier?
The Drain Resistance of Cascode Amplifier is the resistance between the draining node and the source node. It is an important parameter in determining the performance of the amplifier, as it affects the input impedance and the output current and is represented as Rd = (Avo/(gmp^2*Rout)) or Drain Resistance = (Output Voltage Gain/(MOSFET Primary Transconductance^2*Finite Output Resistance)). Output voltage gain is the difference between the output signal voltage level in decibels and the input signal voltage level in decibels, MOSFET Primary Transconductance is the change in the drain current divided by the small change in the gate/source voltage with a constant drain/source voltage & The finite output resistance is a measure of how much the transistor's output impedance varies with changes in the output voltage.
How to calculate Drain Resistance of Cascode Amplifier?
The Drain Resistance of Cascode Amplifier is the resistance between the draining node and the source node. It is an important parameter in determining the performance of the amplifier, as it affects the input impedance and the output current is calculated using Drain Resistance = (Output Voltage Gain/(MOSFET Primary Transconductance^2*Finite Output Resistance)). To calculate Drain Resistance of Cascode Amplifier, you need Output Voltage Gain (Avo), MOSFET Primary Transconductance (gmp) & Finite Output Resistance (Rout). With our tool, you need to enter the respective value for Output Voltage Gain, MOSFET Primary Transconductance & Finite Output Resistance 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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