LEVEL2_Model:LEVEL 2 MOSFET Model

The SPICE Level 2 MOSFET model is translated to the ADS MOSFET LEVEL2_Model. For translation information on the MOSFET device, refer to MOSFET Device.

For more information on the ADS model, place the model in a schematic and choose Edit > Component > Edit Component Parameters to view the model parameters. You can also click Help in the component editor dialog box for additional information.

Example SPICE Command Line:

.model nch nmos level=2 vto=0 kp=2e-5 ...

SPICE Dialect and Netlist Syntax:

Spice2/3:	.model mname NMOS | PMOS LEVEL=2 [param=value]*
PSpice:	.model mname NMOS | PMOS LEVEL=2 [param=value]*
HSpice:	.model mname NMOS | PMOS LEVEL=2 [param=value]*

ADS Netlist Syntax:

model mname MOSFET NMOS=[0|1] PMOS=[0|1] Idsmod=2 [param=value]*

ADS Schematic Symbol:

Model Parameters:

For information on parameter format, refer to Using Parameter Mapping Tables to Understand a Translation.

Table 8-15. LEVEL2_Model Parameters 

ADS	Unit	Default	Spice2/3	PSpice	HSpice
Idsmod		2	Level=2	Level=2	Level=2
Capmod		1
Vto	V	0.0	x	x	VT
Kp	A/V2	2e-5	x	x	BET, BETA
Gamma	V	0.0	x	x	(.5276)
Phi	V	0.6	x	x	(.576)
Lambda	1/V	0.0	x	x	LAM, LA
Rd	ohms	0.0	x	x	-
Rs	ohms	0.0	x	x	-
Cbd	F	0.0	x	x	-
Cbs	F	0.0	x	x	-
Is	A	1e-14	x	x	-
Pb	V	0.8	x	x	-
Cgso	F/m	0.0	x	x	-
Cgdo	F/m	0.0	x	x	-
Cgbo	F/m	0.0	x	x	-
Rsh	ohms/sq	0.0	x	x	-
Cj	F/m2	0.0	x	x	-
Mj		0.5	x	x	-
Cjsw	F/m	0.0	x	x	-
Mjsw		0.33	x	x	-
Js	A/m2	0.0	x	x	-
Tox	m	1e-7	x	x	x
Nsub			x	x	DNB, NB (1e15)
Nss	1/Cm2	0.0	x	x	-
Nfs	1/Cm2	0.0	x	x	DFS, NF, DNF
Tpg		1	x	x	-
Xj	m	0.0	x	x	x
Ld	m	0.0	x	x	DLAT, LATD
Uo	Cm2/(Vs)	600.0	x	x	UB, UBO
Ucrit	V/Cm	1e4	x	x	x
Uexp		0.0	x	x	F2
Vmax	m/s	0.0	x	x	VMX, VSAT
Neff		1.0	x	x	-
Xqc		1.0	-	x	-
Kf		0.0	x	x	-
Af		1.0	x	x	-
Fc		0.5	x	x	-
Delta		0.0	x	x	x
Rg	ohms	0.0	-	x	-
Rds	ohms	infinity	-	x	-
N		1.0	-	x	-
Tt	sec	0.0	-	x	-

Comments:

ADS does not support NRD, RDC, NRS or RSC MOSFET parameters. If RD or RS are not given, they will be calculated as follows:

RD=NRD*RSH+RDC

RS=NRS*RSH+RSC