Hybrid-pi model: Difference between revisions

Revision as of 21:22, 18 June 2019

Revision as of 00:57, 21 August 2019

Line 55:

:<math>g_\text{m} = \left.\frac{i_\text{d}}{v_\text{gs}}\right\vert_{v_\text{ds} = 0}</math>

is the [[transconductance]], evaluated in the Shichman-HodgesShichman–Hodges model in terms of the [[Q-point]] drain current, <math>\scriptstyle I_\text{D}</math>:<ref name=Jaeger2>

{{cite book

|author=R.C. Jaeger and T.N. Blalock

Line 77:

:<math>r_\text{o} = \left.\frac{v_\text{ds}}{i_\text{d}}\right\vert_{v_\text{gs} = 0}</math>

is the output resistance due to [[channel length modulation]], calculated using the Shichman-HodgesShichman–Hodges model as

:<math>\begin{align}

r_\text{o} &= \frac{1}{I_\text{D}}\left(\frac{1}{\lambda} + V_\text{DS}\right) \\