Oct 31, 2005 #1 shaq Full Member level 5 Joined Jul 23, 2005 Messages 311 Helped 14 Reputation 28 Reaction score 4 Trophy points 1,298 Activity points 3,397 uncox Hello everyone! Can anyone tell me how to calculate µnCox by using table 2.1 of page 37 in "Design of Analog CMOS Integrated Circuits" which is written by Razavi ?
uncox Hello everyone! Can anyone tell me how to calculate µnCox by using table 2.1 of page 37 in "Design of Analog CMOS Integrated Circuits" which is written by Razavi ?
Oct 31, 2005 #2 H holddreams Full Member level 6 Joined Aug 2, 2005 Messages 351 Helped 15 Reputation 30 Reaction score 7 Trophy points 1,298 Location Shanghai Activity points 4,237 uncox silicon as in your file , for nmos Un=U0=350 for pmos Up=100 Cox=εox/tox, where εox is the dielectric constant of the silicon dioxide(approximately 3.45e-5pf/um),tox is the thickness of the oxide.
uncox silicon as in your file , for nmos Un=U0=350 for pmos Up=100 Cox=εox/tox, where εox is the dielectric constant of the silicon dioxide(approximately 3.45e-5pf/um),tox is the thickness of the oxide.
Jun 1, 2010 #3 K keith228 Newbie level 1 Joined Jun 1, 2010 Messages 1 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,283 εox where?
Jun 1, 2010 #4 erikl Super Moderator Staff member Joined Sep 9, 2008 Messages 8,108 Helped 2,695 Reputation 5,370 Reaction score 2,305 Trophy points 1,393 Location Germany Activity points 44,123 εox = ε0 * εr(SiO2) = 8.854e-6 pF/µm * 3.9 = 34.5e-6 pF/µm = 34.5 aF/µm
Jul 11, 2011 #5 M mmsh Newbie level 3 Joined Jul 11, 2011 Messages 3 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,293 whats UnCox in 90nm?
Jul 11, 2011 #6 erikl Super Moderator Staff member Joined Sep 9, 2008 Messages 8,108 Helped 2,695 Reputation 5,370 Reaction score 2,305 Trophy points 1,393 Location Germany Activity points 44,123 mmsh said: whats UnCox in 90nm? Click to expand... See e.g. this PTM model card. BTW: Values given there in SI units.
mmsh said: whats UnCox in 90nm? Click to expand... See e.g. this PTM model card. BTW: Values given there in SI units.
Jul 11, 2011 #7 M mmsh Newbie level 3 Joined Jul 11, 2011 Messages 3 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,293 can you get me a value? , because i m can not find it in library. ---------- Post added at 16:01 ---------- Previous post was at 15:52 ---------- can you get me a value? , because i m can not find it in library.
can you get me a value? , because i m can not find it in library. ---------- Post added at 16:01 ---------- Previous post was at 15:52 ---------- can you get me a value? , because i m can not find it in library.
Jul 11, 2011 #8 D dick_freebird Advanced Member level 7 Joined Mar 4, 2008 Messages 8,957 Helped 2,333 Reputation 4,683 Reaction score 2,512 Trophy points 1,393 Location USA Activity points 71,384 u is a surface mobility and will vary with gate processing, at least as much as bulk doping. At very short channels velocity saturation is a real thing and at high channel fields the u0 may not be what defines the conduction. So you may find u0 values that make the model fit, but diverge from classical values.
u is a surface mobility and will vary with gate processing, at least as much as bulk doping. At very short channels velocity saturation is a real thing and at high channel fields the u0 may not be what defines the conduction. So you may find u0 values that make the model fit, but diverge from classical values.