BSIM3v3.2.2 MOSFET Model - The University of Texas at Dallas

Capacitance Model Equationswhere the bias dependences of V th given in Section B.1.1 are notconsidered in calculating V fb for capMod = 2.( )Q =− Q + Q + Q + Qg inv acc sub0 δsubQ = Q + Q + Qb acc sub0 δsubQinv = Qs + Qd2{ 3 3 }V = vfb− 05 . V + V + 4δ vfb where V = vfb−V− δ ; δ = 002 .FBeff3 3 gb 3 3( )Q =−W L C V −vfbacc active active ox FBeffQsub0( V −V−V−V)2K ⎛⎜ 41oxgs FBeff= −WactiveLactiveCox⋅ − 1 + 1 +⎜22⎝K1oxgsteff , CVbseff⎞⎟⎟⎠Vdsat,cvVgstefcvf= gsteff,cvAbulk'Abulk⎛' = Abulk+ ⎛ ⎝ ⎜ ⎞0 ⎜1 CLC CLE⎟⎝ Lactive⎠BSIM3v3.2.2 Manual Copyright © 1999 UC Berkeley B-22