Source-Degenerated Resistance across CS Amplifier Calculator

✖Output resistance is the resistance an amplifier sees when driving a load. It is an important parameter in amplifier design as it affects the amplifier's output power and efficiency.ⓘ Output Resistance [R_out]			+10% -10%
✖Load resistance is the cumulative resistance of a circuit, as seen by the voltage, current, or power source driving that circuit.ⓘ Load Resistance [R_L]			+10% -10%

✖Source-degenerated resistance refers to an increased resistance at the source terminal in a transistor due to added external components.ⓘ Source-Degenerated Resistance across CS Amplifier [R_sd]

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Source-Degenerated Resistance across CS Amplifier

Formula

`"R"_{"sd"} = 1/((1/"R"_{"out"})+(1/"R"_{"L"}))`

Example

`"0.749473kΩ"=1/((1/"1.508kΩ")+(1/"1.49kΩ"))`

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Source-Degenerated Resistance across CS Amplifier Solution

STEP 0: Pre-Calculation Summary

Formula Used

Source-Degenerated Resistance = 1/((1/Output Resistance)+(1/Load Resistance))
R_sd = 1/((1/R_out)+(1/R_L))
This formula uses 3 Variables

Variables Used

Source-Degenerated Resistance - (Measured in Ohm) - Source-degenerated resistance refers to an increased resistance at the source terminal in a transistor due to added external components.
Output Resistance - (Measured in Ohm) - Output resistance is the resistance an amplifier sees when driving a load. It is an important parameter in amplifier design as it affects the amplifier's output power and efficiency.
Load Resistance - (Measured in Ohm) - Load resistance is the cumulative resistance of a circuit, as seen by the voltage, current, or power source driving that circuit.

STEP 1: Convert Input(s) to Base Unit

Output Resistance: 1.508 Kilohm --> 1508 Ohm (Check conversion here)
Load Resistance: 1.49 Kilohm --> 1490 Ohm (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R_sd = 1/((1/R_out)+(1/R_L)) --> 1/((1/1508)+(1/1490))

Evaluating ... ...

R_sd = 749.472981987992

STEP 3: Convert Result to Output's Unit

749.472981987992 Ohm -->0.749472981987992 Kilohm (Check conversion here)

FINAL ANSWER

0.749472981987992 ≈ 0.749473 Kilohm <-- Source-Degenerated Resistance

(Calculation completed in 00.020 seconds)

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Home » Engineering » Electronics » Amplifiers » High Frequency Response Amplifiers » Response of CS Amplifier » Source-Degenerated Resistance across CS Amplifier

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Created by Payal Priya

Birsa Institute of Technology (BIT), Sindri

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National Institute Of Technology (NIT), Hamirpur

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< 19 Response of CS Amplifier Calculators

Source-Degenerated Time Constant of CS Amplifier

Go Source Degenerated Time Constant = Gate to Source Capacitance*Source Resistance Amplifier+Gate to Drain Capacitance*Resistance across Gate and Drain+Capacitance*Resistance

Test Current in Open Circuit Time Constants Method of CS Amplifier

Go Test Current = Transconductance*Gate to Source Voltage+(Test Voltage+Gate to Source Voltage)/Load Resistance

Source-Degenerated Output Resistance of CS Amplifier

Go Source Degenerated Output Resistance = Finite Output Resistance*(1+(Transconductance*Source-Degenerated Resistance))

Source-Degenerated Transconductance of CS Amplifier

Go Source Degenerated Transconductance = Transconductance/(1+Transconductance*Source-Degenerated Resistance)

Source-Degenerated Gain-Bandwidth Product of CS Amplifier

Go Source Degenerated Gain Bandwidth Product = 1/(2*pi*Gate to Drain Capacitance*Signal Resistance)

Low-Frequency Voltage Gain of CS Amplifier

Go Low-Frequency Gain = -Short Circuit Transconductance*(1/Output Resistance+1/Load Resistance)

Load Resistance of CS Amplifier

Go Load Resistance = (Output Voltage/(Transconductance*Gate to Source Voltage))

High-Frequency Response given Input Capacitance

Go High Frequency Response = 1/(2*pi*Signal Resistance*Input Capacitance)

Output Voltage of CS Amplifier

Go Output Voltage = Transconductance*Gate to Source Voltage*Load Resistance

Equivalent Signal Resistance of CS Amplifier

Go Internal Small Signal Resistance = 1/((1/Signal Resistance+1/Output Resistance))

Source-Degenerated Resistance across CS Amplifier

Go Source-Degenerated Resistance = 1/((1/Output Resistance)+(1/Load Resistance))

Frequency of Zero Transmission of CS Amplifier

Go Transmission Frequency = 1/(Bypass Capacitor*Signal Resistance)

Bypass Capacitance of CS Amplifier

Go Bypass Capacitor = 1/(Transmission Frequency*Signal Resistance)

Source-Degenerated Frequency of CS Amplifier

Go Source Degeneration Frequency = 1/(2*pi*Time Constant)

Drain Voltage through Method of Open-Circuit Time Constants to CS Amplifier

Go Drain Voltage = Test Voltage+Gate to Source Voltage

Source Voltage of CS Amplifier

Go Gate to Source Voltage = Drain Voltage-Test Voltage

Midband Gain of CS Amplifier

Go Mid Band Gain = Output Voltage/Small Signal Voltage

Resistance between Gate and Drain in Open Circuit Time Constants Method of CS Amplifier

Go Resistance = Test Voltage/Test Current

Current Gain of CS Amplifier

Go Current Gain = Power Gain/Voltage Gain

Source-Degenerated Resistance across CS Amplifier Formula

Source-Degenerated Resistance = 1/((1/Output Resistance)+(1/Load Resistance))
R_sd = 1/((1/R_out)+(1/R_L))

What is wideband amplifier? What is source degeneration?

The wideband amplifier will be used to supply power to integrated circuits, the operational amplifiers will have a load at their outputs. As the load resistance increases, the op-amp's output resistance becomes less dominant, specifically in the low-frequency range.

Source degeneration boosts the output impedance but decreases the usable output swing.

How to Calculate Source-Degenerated Resistance across CS Amplifier?

Source-Degenerated Resistance across CS Amplifier calculator uses Source-Degenerated Resistance = 1/((1/Output Resistance)+(1/Load Resistance)) to calculate the Source-Degenerated Resistance, Source-Degenerated Resistance across CS Amplifier formula is defined as a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω). Source-Degenerated Resistance is denoted by R_sd symbol.

How to calculate Source-Degenerated Resistance across CS Amplifier using this online calculator? To use this online calculator for Source-Degenerated Resistance across CS Amplifier, enter Output Resistance (R_out) & Load Resistance (R_L) and hit the calculate button. Here is how the Source-Degenerated Resistance across CS Amplifier calculation can be explained with given input values -> 0.000752 = 1/((1/1508)+(1/1490)).

FAQ

What is Source-Degenerated Resistance across CS Amplifier?

Source-Degenerated Resistance across CS Amplifier formula is defined as a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω) and is represented as R_sd = 1/((1/R_out)+(1/R_L)) or Source-Degenerated Resistance = 1/((1/Output Resistance)+(1/Load Resistance)). Output resistance is the resistance an amplifier sees when driving a load. It is an important parameter in amplifier design as it affects the amplifier's output power and efficiency & Load resistance is the cumulative resistance of a circuit, as seen by the voltage, current, or power source driving that circuit.

How to calculate Source-Degenerated Resistance across CS Amplifier?

Source-Degenerated Resistance across CS Amplifier formula is defined as a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω) is calculated using Source-Degenerated Resistance = 1/((1/Output Resistance)+(1/Load Resistance)). To calculate Source-Degenerated Resistance across CS Amplifier, you need Output Resistance (R_out) & Load Resistance (R_L). With our tool, you need to enter the respective value for Output Resistance & Load 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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