MOSFET Drain–Gate RD Calculator

MOSFET Drain–Gate RD Calculator

Find the drain resistor RD required to achieve a desired output voltage Vout in a diode-connected MOSFET.

Step 1: Enter Circuit Parameters

Example: 5 V

Vout should be greater than VTH

Example: 1 V

Example: 0.001 A/V²

Dimensionless

Circuit Equation: VDDVoutRD=12kWL(VoutVTH)2

Therefore, RD=VDDVout12kWL(VoutVTH)2