The maximum operating frequency of a MOSFET is
A.
B.
C.
D.
Choose the correct answer from the options given below:

Question

Question

This question was previously asked in

UGC NET Paper 2: Electronic Science 3rd Dec 2021 Shift 2

Answer 1

Frequency (f)=

=

where gm is the transconductance

C is capacitance

In MOSFET, the I_Dcurrent equation in saturation is

and g_{m =}

C = C_ox × w × L

V_DS = V_gs- V_t

g_m =

the frequency will be =

so the correct option is 3.

Another solution:

we can go through by options by considering units of mobility (μ in }, voltage(V_Din Volt), and length (L in m).