MOSFET level 5 (BSIM2)

Instance line: Mname …
Model line: .model mname nmos | pmos, LEVEL=5
Terminals: Drain, Gate, Source, Bulk
Described in: MOSFETs
Source: src/lib/dev/bsim2/b2.c

Instance parameters (13)

Input and output (12)

name	type	description
`l`	real	Length
`w`	real	Width
`ad`	real	Drain area
`as`	real	Source area
`pd`	real	Drain perimeter
`ps`	real	Source perimeter
`nrd`	real	Number of squares in drain
`nrs`	real	Number of squares in source
`off`	flag	Device is initially off
`vds`	real	Initial D-S voltage
`vgs`	real	Initial G-S voltage
`vbs`	real	Initial B-S voltage

Input only (1)

name	type	description	notes
`ic`	vector	Vector of DS,GS,BS initial voltages

Model parameters (135)

Input and output (133)

name	type	description	notes
`vfb`	real	Flat band voltage
`lvfb`	real	Length dependence of vfb
`wvfb`	real	Width dependence of vfb
`phi`	real	Strong inversion surface potential
`lphi`	real	Length dependence of phi
`wphi`	real	Width dependence of phi
`k1`	real	Bulk effect coefficient 1
`lk1`	real	Length dependence of k1
`wk1`	real	Width dependence of k1
`k2`	real	Bulk effect coefficient 2
`lk2`	real	Length dependence of k2
`wk2`	real	Width dependence of k2
`eta0`	real	VDS dependence of threshold voltage at VDD=0
`leta0`	real	Length dependence of eta0
`weta0`	real	Width dependence of eta0
`etab`	real	VBS dependence of eta
`letab`	real	Length dependence of etab
`wetab`	real	Width dependence of etab
`dl`	real	Channel length reduction in um
`dw`	real	Channel width reduction in um
`mu0`	real	Low-field mobility, at VDS=0 VGS=VTH
`mu0b`	real	VBS dependence of low-field mobility
`lmu0b`	real	Length dependence of mu0b
`wmu0b`	real	Width dependence of mu0b
`mus0`	real	Mobility at VDS=VDD VGS=VTH
`lmus0`	real	Length dependence of mus0
`wmus0`	real	Width dependence of mus
`musb`	real	VBS dependence of mus
`lmusb`	real	Length dependence of musb
`wmusb`	real	Width dependence of musb
`mu20`	real	VDS dependence of mu in tanh term
`lmu20`	real	Length dependence of mu20
`wmu20`	real	Width dependence of mu20
`mu2b`	real	VBS dependence of mu2
`lmu2b`	real	Length dependence of mu2b
`wmu2b`	real	Width dependence of mu2b
`mu2g`	real	VGS dependence of mu2
`lmu2g`	real	Length dependence of mu2g
`wmu2g`	real	Width dependence of mu2g
`mu30`	real	VDS dependence of mu in linear term
`lmu30`	real	Length dependence of mu30
`wmu30`	real	Width dependence of mu30
`mu3b`	real	VBS dependence of mu3
`lmu3b`	real	Length dependence of mu3b
`wmu3b`	real	Width dependence of mu3b
`mu3g`	real	VGS dependence of mu3
`lmu3g`	real	Length dependence of mu3g
`wmu3g`	real	Width dependence of mu3g
`mu40`	real	VDS dependence of mu in linear term
`lmu40`	real	Length dependence of mu40
`wmu40`	real	Width dependence of mu40
`mu4b`	real	VBS dependence of mu4
`lmu4b`	real	Length dependence of mu4b
`wmu4b`	real	Width dependence of mu4b
`mu4g`	real	VGS dependence of mu4
`lmu4g`	real	Length dependence of mu4g
`wmu4g`	real	Width dependence of mu4g
`ua0`	real	Linear VGS dependence of mobility
`lua0`	real	Length dependence of ua0
`wua0`	real	Width dependence of ua0
`uab`	real	VBS dependence of ua
`luab`	real	Length dependence of uab
`wuab`	real	Width dependence of uab
`ub0`	real	Quadratic VGS dependence of mobility
`lub0`	real	Length dependence of ub0
`wub0`	real	Width dependence of ub0
`ubb`	real	VBS dependence of ub
`lubb`	real	Length dependence of ubb
`wubb`	real	Width dependence of ubb
`u10`	real	VDS depence of mobility
`lu10`	real	Length dependence of u10
`wu10`	real	Width dependence of u10
`u1b`	real	VBS depence of u1
`lu1b`	real	Length depence of u1b
`wu1b`	real	Width depence of u1b
`u1d`	real	VDS depence of u1
`lu1d`	real	Length depence of u1d
`wu1d`	real	Width depence of u1d
`n0`	real	Subthreshold slope at VDS=0 VBS=0
`ln0`	real	Length dependence of n0
`wn0`	real	Width dependence of n0
`nb`	real	VBS dependence of n
`lnb`	real	Length dependence of nb
`wnb`	real	Width dependence of nb
`nd`	real	VDS dependence of n
`lnd`	real	Length dependence of nd
`wnd`	real	Width dependence of nd
`vof0`	real	Threshold voltage offset AT VDS=0 VBS=0
`lvof0`	real	Length dependence of vof0
`wvof0`	real	Width dependence of vof0
`vofb`	real	VBS dependence of vof
`lvofb`	real	Length dependence of vofb
`wvofb`	real	Width dependence of vofb
`vofd`	real	VDS dependence of vof
`lvofd`	real	Length dependence of vofd
`wvofd`	real	Width dependence of vofd
`ai0`	real	Pre-factor of hot-electron effect.
`lai0`	real	Length dependence of ai0
`wai0`	real	Width dependence of ai0
`aib`	real	VBS dependence of ai
`laib`	real	Length dependence of aib
`waib`	real	Width dependence of aib
`bi0`	real	Exponential factor of hot-electron effect.
`lbi0`	real	Length dependence of bi0
`wbi0`	real	Width dependence of bi0
`bib`	real	VBS dependence of bi
`lbib`	real	Length dependence of bib
`wbib`	real	Width dependence of bib
`vghigh`	real	Upper bound of the cubic spline function.
`lvghigh`	real	Length dependence of vghigh
`wvghigh`	real	Width dependence of vghigh
`vglow`	real	Lower bound of the cubic spline function.
`lvglow`	real	Length dependence of vglow
`wvglow`	real	Width dependence of vglow
`tox`	real	Gate oxide thickness in um
`temp`	real	Temperature in degree Celcius
`vdd`	real	Maximum Vds
`vgg`	real	Maximum Vgs
`vbb`	real	Maximum Vbs
`cgso`	real	Gate source overlap capacitance per unit channel width(m)	ac
`cgdo`	real	Gate drain overlap capacitance per unit channel width(m)	ac
`cgbo`	real	Gate bulk overlap capacitance per unit channel length(m)	ac
`xpart`	real	Flag for channel charge partitioning
`rsh`	real	Source drain diffusion sheet resistance in ohm per square
`js`	real	Source drain junction saturation current per unit area
`pb`	real	Source drain junction built in potential
`mj`	real	Source drain bottom junction capacitance grading coefficient	ac
`pbsw`	real	Source drain side junction capacitance built in potential	ac
`mjsw`	real	Source drain side junction capacitance grading coefficient	ac
`cj`	real	Source drain bottom junction capacitance per unit area	ac
`cjsw`	real	Source drain side junction capacitance per unit area	ac
`wdf`	real	Default width of source drain diffusion in um
`dell`	real	Length reduction of source drain diffusion

Input only (2)

name	type	description	notes
`nmos`	flag	Flag to indicate NMOS
`pmos`	flag	Flag to indicate PMOS

Parameters are set on the instance or .model line as keyword=value, and read back with @name[keyword] or the show and showmod commands. See the device reference.