# A MOSFET in saturation has a drain current of $1$ mA for ${\rm{VDS\;}} = {\rm{\;}}0.5{\rm{\;V}}.$ If the channel length modulation coefficient is

127 views
in General
closed
A MOSFET in saturation has a drain current of $1$ mA for ${\rm{VDS\;}} = {\rm{\;}}0.5{\rm{\;V}}.$ If the channel length modulation coefficient is $0.05{\rm{\;}}{{\rm{V}}^1}$, the output resistance (in kΩ) of the MOSFET is_

by (37.3k points)
selected

Concept:

The output impedance is given by ${{\rm{R}}_0} = \frac{1}{{{\rm{\lambda }}{{\rm{I}}_{\rm{D}}}}}$

Application:

$\begin{array}{l} {{\rm{R}}_0} = \frac{1}{{{\rm{\lambda }}{{\rm{I}}_{\rm{D}}}}}\\ \Rightarrow {{\rm{R}}_0} = \frac{1}{{0.05 \times 0.5}} = 20{\rm{k\Omega }} \end{array}$