Figure P5.35(a) shows an n-channel enhancement-mode MOSFET source follower circuit. Figure P5.35(b) shows its small-signal equivalent (where R_i = R₁ 1|| R₂) (Neamen, 2001).

a. Verify that the equations governing this circuit are

b. Draw a block diagram showing the relations betweenthe equations.

c. Use the block diagram in Part b to find V_o(s)/V_i(s).

FIGURE P5.35 

a. An n-channel enhancement-mode MOSFET source follower circuit; b. small-signal equivalent

Transcribed Image Text:

Vin Ri Vgs = Vin – Vo; Vo = 8m(Rs||ro)vgs Vi R; + R,