Drain Resistance in MOSFET Formulas

Drain resistance is the resistance seen looking into the drain terminal of a FET when a voltage is applied to the gate. It is an important parameter that affects the performance of FET circuits. And is denoted by R_d. Drain Resistance is usually measured using the Kilohm for Electric Resistance. Note that the value of Drain Resistance is always negative.

MOSFET formulas that make use of Drain Resistance

fxCommon-Mode Rejection Ratio of MOSFET given ResistanceGo

fxCommon-Mode Signal of MOSFET given Output Voltage at Drain Q2Go

FAQ

What is the Drain Resistance?

Drain resistance is the resistance seen looking into the drain terminal of a FET when a voltage is applied to the gate. It is an important parameter that affects the performance of FET circuits. Drain Resistance is usually measured using the Kilohm for Electric Resistance. Note that the value of Drain Resistance is always negative.

Can the Drain Resistance be negative?

Yes, the Drain Resistance, measured in Electric Resistance can be negative.

What unit is used to measure Drain Resistance?

Drain Resistance 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 can be measured.

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