GATE Electronics and Communications (EC) 2020 Solved Papers

Question : 54 of 65

Marks: +1, -0

Using the incremental low frequency small-signal model of the MOS device, the Norton equivalent resistance of the following circuit is

Solution:

V_{\;\text "test "\;}=-V_{g s}

=r_{\;\text "ds "\;}(\;\I_{\test} \;-g_{m} V_{\;\text "test "\;})+I_{\;\text "test "\;} R

V_{\;\text "test "\;}(1+g_{m} r_{d s})=I_{\;\text "test "\;}(r_{d s}+R)

\;{V_{\;\text "test "\;}}/{I_{\;\text "test "\;}}=Re q=\;{r_{d s}+R}/{1+g_{m} r_{d s}}

Go to Question:

Prev Question

Next Question