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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_

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Concept:

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

Application:

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

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