Common Gate MOSFET Amplifier Calculator

Common Gate MOSFET Amplifier Calculator

Calculate the small-signal voltage gain of a common gate (CG) MOSFET amplifier.

Step 1: Enter Circuit Parameters

Example: \(0.002\) S (2 mS)

Example: \(10\,\text{k}\Omega\)

Enter 0 if the source is bypassed.

If \(R_S = 0\): $$ A_v = g_m \, R_D $$

If \(R_S > 0\): $$ A_v = \frac{g_m \, R_D}{1 + g_m \, R_S} $$