Drain Resistance in Cascode Amplifier Calculator

✖Finite input resistance is the finite resistance seen by the current source or voltage source which drives the circuit.ⓘ Finite Input Resistance [R_in]			+10% -10%
✖Resistance is a measure of the opposition to current flow in an electrical circuit. Its S.I unit is ohm.ⓘ Resistance [R_t]			+10% -10%

✖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.ⓘ Drain Resistance in Cascode Amplifier [R_d]

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Drain Resistance in Cascode Amplifier Solution

STEP 0: Pre-Calculation Summary

Formula Used

Drain Resistance = 1/(1/Finite Input Resistance+1/Resistance)
R_d = 1/(1/R_in+1/R_t)
This formula uses 3 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.
Finite Input Resistance - (Measured in Ohm) - Finite input resistance is the finite resistance seen by the current source or voltage source which drives the circuit.
Resistance - (Measured in Ohm) - Resistance is a measure of the opposition to current flow in an electrical circuit. Its S.I unit is ohm.

STEP 1: Convert Input(s) to Base Unit

Finite Input Resistance: 0.78 Kilohm --> 780 Ohm (Check conversion here)
Resistance: 0.48 Kilohm --> 480 Ohm (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R_d = 1/(1/R_in+1/R_t) --> 1/(1/780+1/480)

Evaluating ... ...

R_d = 297.142857142857

STEP 3: Convert Result to Output's Unit

297.142857142857 Ohm -->0.297142857142857 Kilohm (Check conversion here)

FINAL ANSWER

0.297142857142857 ≈ 0.297143 Kilohm <-- Drain Resistance

(Calculation completed in 00.004 seconds)

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< Response of Cascode Amplifier Calculators

Gain Bandwidth Product

LaTeX Go Gain Bandwidth Product = (Transconductance*Load Resistance)/(2*pi*Load Resistance*(Capacitance+Gate to Drain Capacitance))

3-DB Frequency in Design Insight and Trade-Off

LaTeX Go 3 dB Frequency = 1/(2*pi*(Capacitance+Gate to Drain Capacitance)*(1/(1/Load Resistance+1/Output Resistance)))

Drain Resistance in Cascode Amplifier

LaTeX Go Drain Resistance = 1/(1/Finite Input Resistance+1/Resistance)

Gain Factor

LaTeX Go Gain Factor = Amplifier Gain in Mid Band/Mid Band Gain

< Multi Stage Amplifiers Calculators

Gain Bandwidth Product

LaTeX Go Gain Bandwidth Product = (Transconductance*Load Resistance)/(2*pi*Load Resistance*(Capacitance+Gate to Drain Capacitance))

3-DB Frequency in Design Insight and Trade-Off

LaTeX Go 3 dB Frequency = 1/(2*pi*(Capacitance+Gate to Drain Capacitance)*(1/(1/Load Resistance+1/Output Resistance)))

Drain Resistance in Cascode Amplifier

LaTeX Go Drain Resistance = 1/(1/Finite Input Resistance+1/Resistance)

Amplifier Gain given Function of Complex Frequency Variable

LaTeX Go Amplifier Gain in Mid Band = Mid Band Gain*Gain Factor

Drain Resistance in Cascode Amplifier Formula

LaTeX Go

Drain Resistance = 1/(1/Finite Input Resistance+1/Resistance)
R_d = 1/(1/R_in+1/R_t)

What is the difference between Cascade and cascode amplifier?

In a cascade amplifier, the transistors are arranged like a chain that is the output of the first transistor is connected as input for the second transistor. While in a cascode amplifier, the transistor is placed one above the other.

How to Calculate Drain Resistance in Cascode Amplifier?

Drain Resistance in Cascode Amplifier calculator uses Drain Resistance = 1/(1/Finite Input Resistance+1/Resistance) to calculate the Drain Resistance, The Drain resistance in cascode amplifier formula is defined as ratio of change in drain to source voltage to corresponding change in drain current for constant gate to source voltage. Drain Resistance is denoted by R_d symbol.

How to calculate Drain Resistance in Cascode Amplifier using this online calculator? To use this online calculator for Drain Resistance in Cascode Amplifier, enter Finite Input Resistance (R_in) & Resistance (R_t) and hit the calculate button. Here is how the Drain Resistance in Cascode Amplifier calculation can be explained with given input values -> 0.000297 = 1/(1/780+1/480).

FAQ

What is Drain Resistance in Cascode Amplifier?

The Drain resistance in cascode amplifier formula is defined as ratio of change in drain to source voltage to corresponding change in drain current for constant gate to source voltage and is represented as R_d = 1/(1/R_in+1/R_t) or Drain Resistance = 1/(1/Finite Input Resistance+1/Resistance). Finite input resistance is the finite resistance seen by the current source or voltage source which drives the circuit & Resistance is a measure of the opposition to current flow in an electrical circuit. Its S.I unit is ohm.

How to calculate Drain Resistance in Cascode Amplifier?

The Drain resistance in cascode amplifier formula is defined as ratio of change in drain to source voltage to corresponding change in drain current for constant gate to source voltage is calculated using Drain Resistance = 1/(1/Finite Input Resistance+1/Resistance). To calculate Drain Resistance in Cascode Amplifier, you need Finite Input Resistance (R_in) & Resistance (R_t). With our tool, you need to enter the respective value for Finite Input Resistance & 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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