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Drain Resistance in Cascode Amplifier Formula

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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. Check FAQs

R d = \frac{1}{\frac{1}{R in} + \frac{1}{R t}}

R_d - Drain Resistance?R_in - Finite Input Resistance?R_t - Resistance?

Drain Resistance in Cascode Amplifier Example

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With units

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Here is how the Drain Resistance in Cascode Amplifier equation looks like with Values.

Here is how the Drain Resistance in Cascode Amplifier equation looks like with Units.

Here is how the Drain Resistance in Cascode Amplifier equation looks like.

0.2971 = \frac{1}{\frac{1}{0.78} + \frac{1}{0.48}}

0.2971kΩ = \frac{1}{\frac{1}{0.78kΩ} + \frac{1}{0.48kΩ}}

0.2971 = \frac{1}{\frac{1}{0.78} + \frac{1}{0.48}}

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Drain Resistance in Cascode Amplifier Solution

Follow our step by step solution on how to calculate Drain Resistance in Cascode Amplifier?

FIRST Step Consider the formula

R d = \frac{1}{\frac{1}{R in} + \frac{1}{R t}}

Next Step Substitute values of Variables

∴

R d = \frac{1}{\frac{1}{0.78kΩ} + \frac{1}{0.48kΩ}}

Next Step Convert Units

∴

R d = \frac{1}{\frac{1}{780Ω} + \frac{1}{480Ω}}

Next Step Prepare to Evaluate

∴

R d = \frac{1}{\frac{1}{780} + \frac{1}{480}}

Next Step Evaluate

∴

R d = 297.142857142857Ω

Next Step Convert to Output's Unit

∴

R d = 0.297142857142857kΩ

LAST Step Rounding Answer

∴

R d = 0.2971kΩ

Drain Resistance in Cascode Amplifier Formula Elements

Variables

Drain Resistance

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.

Symbol: R_d

Measurement: Electric ResistanceUnit: kΩ

Note: Value should be greater than 0.

Formulas to find Drain Resistance

Finite Input Resistance

Finite input resistance is the finite resistance seen by the current source or voltage source which drives the circuit.

Symbol: R_in

Measurement: Electric ResistanceUnit: kΩ

Note: Value should be greater than 0.

Formulas to find Finite Input Resistance

Resistance

Resistance is a measure of the opposition to current flow in an electrical circuit. Its S.I unit is ohm.

Symbol: R_t

Measurement: Electric ResistanceUnit: kΩ

Note: Value should be greater than 0.

Formulas to find Resistance

Other formulas in Response of Cascode Amplifier category

Go 3-DB Frequency in Design Insight and Trade-Off

f 3dB = \frac{1}{2 \cdot π \cdot (C t + C gd) \cdot (\frac{1}{\frac{1}{R L} + \frac{1}{R out}})}

Go Amplifier Gain given Function of Complex Frequency Variable

A m = A mid \cdot K

Go Gain Bandwidth Product

GB = \frac{g m \cdot R L}{2 \cdot π \cdot R L \cdot (C t + C gd)}

Go Gain Factor

K = \frac{A m}{A mid}

How to Evaluate Drain Resistance in Cascode Amplifier?

Drain Resistance in Cascode Amplifier evaluator uses Drain Resistance = 1/(1/Finite Input Resistance+1/Resistance) to evaluate 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 evaluate Drain Resistance in Cascode Amplifier using this online evaluator? To use this online evaluator for Drain Resistance in Cascode Amplifier, enter Finite Input Resistance (R_in) & Resistance (R_t) and hit the calculate button.

FAQs on Drain Resistance in Cascode Amplifier

What is the formula to find Drain Resistance in Cascode Amplifier?

The formula of Drain Resistance in Cascode Amplifier is expressed as Drain Resistance = 1/(1/Finite Input Resistance+1/Resistance). Here is an example- 0.000297 = 1/(1/780+1/480).

How to calculate Drain Resistance in Cascode Amplifier?

With Finite Input Resistance (R_in) & Resistance (R_t) we can find Drain Resistance in Cascode Amplifier using the formula - Drain Resistance = 1/(1/Finite Input Resistance+1/Resistance).

Can the Drain Resistance in Cascode Amplifier be negative?

No, the Drain Resistance in Cascode Amplifier, measured in Electric Resistance cannot be negative.

Which unit is used to measure Drain Resistance in Cascode Amplifier?

Drain Resistance in Cascode Amplifier is usually measured using the Kilohm[kΩ] for Electric Resistance. Ohm[kΩ], Megohm[kΩ], Microhm[kΩ] are the few other units in which Drain Resistance in Cascode Amplifier can be measured.

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Drain Resistance in Cascode Amplifier Formula

Drain Resistance in Cascode Amplifier Example

Drain Resistance in Cascode Amplifier Solution

Drain Resistance in Cascode Amplifier Formula Elements

Other formulas in Response of Cascode Amplifier category

How to Evaluate Drain Resistance in Cascode Amplifier?

FAQs on Drain Resistance in Cascode Amplifier

Variable Name