Source-Degenerated Gain-Bandwidth Product of CS Amplifier Calculator

✖Gate to Drain Capacitance is defined as the capacitance that is observed between the gate and drain of the Junction of MOSFET.ⓘ Gate to Drain Capacitance [C_gd]			+10% -10%
✖Signal Resistance is the resistance which is fed with the signal voltage source vs to an Amplifier.ⓘ Signal Resistance [R_sig]			+10% -10%

✖Source Degenerated Gain Bandwidth Product represents the frequency at which an amplifier's gain decreases due to source degeneration.ⓘ Source-Degenerated Gain-Bandwidth Product of CS Amplifier [BW_sd]

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Source-Degenerated Gain-Bandwidth Product of CS Amplifier Solution

STEP 0: Pre-Calculation Summary

Formula Used

Source Degenerated Gain Bandwidth Product = 1/(2*pi*Gate to Drain Capacitance*Signal Resistance)
BW_sd = 1/(2*pi*C_gd*R_sig)
This formula uses 1 Constants, 3 Variables

Constants Used

pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288

Variables Used

Source Degenerated Gain Bandwidth Product - (Measured in Hertz) - Source Degenerated Gain Bandwidth Product represents the frequency at which an amplifier's gain decreases due to source degeneration.
Gate to Drain Capacitance - (Measured in Farad) - Gate to Drain Capacitance is defined as the capacitance that is observed between the gate and drain of the Junction of MOSFET.
Signal Resistance - (Measured in Ohm) - Signal Resistance is the resistance which is fed with the signal voltage source vs to an Amplifier.

STEP 1: Convert Input(s) to Base Unit

Gate to Drain Capacitance: 1.345 Microfarad --> 1.345E-06 Farad (Check conversion here)
Signal Resistance: 1.25 Kilohm --> 1250 Ohm (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

BW_sd = 1/(2*pi*C_gd*R_sig) --> 1/(2*pi*1.345E-06*1250)

Evaluating ... ...

BW_sd = 94.6646501661831

STEP 3: Convert Result to Output's Unit

94.6646501661831 Hertz --> No Conversion Required

FINAL ANSWER

94.6646501661831 ≈ 94.66465 Hertz <-- Source Degenerated Gain Bandwidth Product

(Calculation completed in 00.020 seconds)

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< Response of CS Amplifier Calculators

Output Voltage of CS Amplifier

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

Equivalent Signal Resistance of CS Amplifier

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

Frequency of Zero Transmission of CS Amplifier

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

Midband Gain of CS Amplifier

LaTeX Go Mid Band Gain = Output Voltage/Small Signal Voltage

Source-Degenerated Gain-Bandwidth Product of CS Amplifier Formula

LaTeX Go

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

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 Gain-Bandwidth Product of CS Amplifier?

Source-Degenerated Gain-Bandwidth Product of CS Amplifier calculator uses Source Degenerated Gain Bandwidth Product = 1/(2*pi*Gate to Drain Capacitance*Signal Resistance) to calculate the Source Degenerated Gain Bandwidth Product, Source-Degenerated Gain-Bandwidth Product of CS Amplifier formula is defined as the product of the open-loop voltage gain and the frequency at which it is measured. The GBW is constant for voltage feedback amplifiers. It does not have much meaning for current feedback amplifiers, because there is no linear relationship between gain and bandwidth. Source Degenerated Gain Bandwidth Product is denoted by BW_sd symbol.

How to calculate Source-Degenerated Gain-Bandwidth Product of CS Amplifier using this online calculator? To use this online calculator for Source-Degenerated Gain-Bandwidth Product of CS Amplifier, enter Gate to Drain Capacitance (C_gd) & Signal Resistance (R_sig) and hit the calculate button. Here is how the Source-Degenerated Gain-Bandwidth Product of CS Amplifier calculation can be explained with given input values -> 94.66465 = 1/(2*pi*1.345E-06*1250).

FAQ

What is Source-Degenerated Gain-Bandwidth Product of CS Amplifier?

Source-Degenerated Gain-Bandwidth Product of CS Amplifier formula is defined as the product of the open-loop voltage gain and the frequency at which it is measured. The GBW is constant for voltage feedback amplifiers. It does not have much meaning for current feedback amplifiers, because there is no linear relationship between gain and bandwidth and is represented as BW_sd = 1/(2*pi*C_gd*R_sig) or Source Degenerated Gain Bandwidth Product = 1/(2*pi*Gate to Drain Capacitance*Signal Resistance). Gate to Drain Capacitance is defined as the capacitance that is observed between the gate and drain of the Junction of MOSFET & Signal Resistance is the resistance which is fed with the signal voltage source vs to an Amplifier.

How to calculate Source-Degenerated Gain-Bandwidth Product of CS Amplifier?

Source-Degenerated Gain-Bandwidth Product of CS Amplifier formula is defined as the product of the open-loop voltage gain and the frequency at which it is measured. The GBW is constant for voltage feedback amplifiers. It does not have much meaning for current feedback amplifiers, because there is no linear relationship between gain and bandwidth is calculated using Source Degenerated Gain Bandwidth Product = 1/(2*pi*Gate to Drain Capacitance*Signal Resistance). To calculate Source-Degenerated Gain-Bandwidth Product of CS Amplifier, you need Gate to Drain Capacitance (C_gd) & Signal Resistance (R_sig). With our tool, you need to enter the respective value for Gate to Drain Capacitance & Signal 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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