Apr 10, 2009 #1 L lhlbluesky Banned Joined Mar 30, 2007 Messages 558 Helped 5 Reputation 10 Reaction score 5 Trophy points 1,298 Location china Activity points 0 for MOS transistor in subthreshold, how to calculate its Gm, early voltage? and what is the relationship of gain and early voltage? and someone says, MOS transistor in subthreshold can have the largest gain, but why? is that because working with small operating current? pls help me. thanks all.
for MOS transistor in subthreshold, how to calculate its Gm, early voltage? and what is the relationship of gain and early voltage? and someone says, MOS transistor in subthreshold can have the largest gain, but why? is that because working with small operating current? pls help me. thanks all.
Apr 10, 2009 #2 erikl Super Moderator Staff member Joined Sep 9, 2008 Messages 8,108 Helped 2,695 Reputation 5,370 Reaction score 2,308 Trophy points 1,393 Location Germany Activity points 44,123 For Gm & gain ≈ Gm/Id s. E. Vittoz' paper on weak inversion below, p. 10 For Early voltage s. Berkeley's BSIM manual, CHAP2N.pdf (below), p. 24 ff.
For Gm & gain ≈ Gm/Id s. E. Vittoz' paper on weak inversion below, p. 10 For Early voltage s. Berkeley's BSIM manual, CHAP2N.pdf (below), p. 24 ff.
Apr 10, 2009 #3 L lhlbluesky Banned Joined Mar 30, 2007 Messages 558 Helped 5 Reputation 10 Reaction score 5 Trophy points 1,298 Location china Activity points 0 thanks erikl