Mextram 504 Model-Mextram 504 Model

Mextram_504_Model:Mextram 504 Model

The Spectre bjt504 model is translated to the ADS NPN or PNP MEXTRAM 504 Model. For translation information on the BJT device, refer to BJT Device for Spectre.

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 Spectre Command Line:

model mext504 bjt504 type=npn level=6 tref=25 dta=0 exmod=1 ...

Spectre Netlist Syntax:

Spectre:

model mname bjt504 type= [npn|pnp] [param= value]*

Example ADS Command Line:

model mext504 MextramBJT504 NPN=yes Level=6 Tref=25 dta=0 Exmod=1 ...

ADS Netlist Syntax:

model mname MextramBJT504 NPN=[0|1] PNP=[0|1] Release=504 [param= value ]*

ADS Schematic Symbol:

Model Parameters:

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

ADS	Default	Unit	Spectre
NPN	YES		type npn
PNP	NO		type npn
LEVEL	6		x
MULT	1.0		x
Tref	25.0	C	x
DTA	0.0		x
Exmod	1		x
Exaval	0		x
Is	22.0e-18	A	x
Bf	215.0		x
Xibi	0.0		x
Ibf	2.75e-15	A	x
Vlf	0.5	V	x
Ik	0.1	A	x
Bri	7.0		x
Ibr	1.0e-15	A	x
Vlr	0.2	V	x
		x
Xert	0.63		x
Ver	2.5	V	x
Vef	44.0	V	x
Mlf	2.0		x
Wavl	1.1e-6	gMeters	x
Vavl	3.0	V	x
Sfh	0.3		x
Re	5.0	ohms	x
Rbc	23	ohms	x
Rbv	18	ohms	x
Rcc	12	ohms	x
Rcv	150	ohms	x
SCRcv	1250	ohms	x
Ihc	4e-3	A	x
axi	0.3		x
Cje	73e-15	farads	x
Vde	0.95	V	x
pe	0.4		x
XCje	0.4		x
Cbe0	0.0		x
Cjc	78e-15	F	x
Vdc	0.68	V	x
pc	0.5		x
Xp	0.35		x
mc	0.5		x
XCjc	32e-3		x
Cbc0	0		x
mt	1		x
te	2e-12	s	x
tb	4.2e-12	s	x
tepi	41e-12	s	x
tr	520e-12	s	x
dEg	0	Elec. V	x
Xrec	0	V	x
Aqb0	0.3		x
Ae	0		x
Ab	1		x
Aepi	2.5		x
Aex	0.62		x
Ac	2.0		x
dVgbf	0.05	V	x
dVgbr	0.045	V	x
Vgb	1.17	V	x
Vgj	1.15	V	x
dVgte	0.05	^V	x
Af	2		x
Kf	2e-11		x
Kfn	2e-11		x
Iss	4.8e-18	A	x
Iks	2.5e-4	^A	x
Cjs	3.15e-13	F	x
Vds	0.62	V	x
ps	0.34		x
Vgs	1.2	V	x
As	1.58		x
Rth	300		-
Cth	3e-9		-