# quick way to get Thevenin voltage

Discussion in 'Homework Help' started by screen1988, Mar 20, 2013.

1. ### screen1988 Thread Starter Member

Mar 7, 2013
310
3
To calculate $V_{Y}$, we note that M1 drivers M2 as a source follower and replace $V_{in1}$ and M1 by a Thevenin equivalent: the Thevenin voltage $V_{in1}= V_{T}$ the resistance $R_{T}=\dfrac {1} {g_{m1}}$.