Simulators

This model is supported by SPICE3. HPSPICE provides only DC analysis capability for this model.

The SPICE3 default nominal temperature is 27°C. Set the TNOM variable under the Utilities menu to force another temperature.

SPICE3 Simulators

The general form for the SPICE3 statement that calls the UCB GaAs MESFET model is

ZXXXXXXX ND NG NS MNAME

where

ZXXXXXXX	indicates MESFET device name (any name that begins with Z)
ND	indicates drain node number
NG	indicates gate node number
NS	indicates source node number
MNAME	indicates model name

An example of this call is

 Z1 7 2 3 ZM1 OFF 

The SPICE3 syntax of the .MODEL definition is

.MODEL MNAME TYPE PNAME1=PVAL1 PNAME2=PVAL2 ...

where

MNAME	indicates model name
TYPE	indicates NMF (N-channel MESFET) or PMF (P-channel MESFET)
PNAME#	indicates UCB GaAs MESFET parameter name
PVAL#	indicates parameter value of PNAME#

HPSPICE Simulators

The general form for the HPSPICE statement that calls the UCB GaAs MESFET model is

JXXXXXXX ND NG NS MNAME

where

JXXXXXXX	indicates MESFET device name (any name that begins with J)
ND	indicates drain node number
NG	indicates gate node number
NS	indicates source node number
MNAME	indicates model name

An example of this statement is

 J1 5 1 2 MODJ

The HPSPICE syntax for the .MODEL definition is

.MODEL MNAME RCAY TYPE PNAME1=PVAL1 PNAME2=PVAL2 ...

where

MNAME	indicates model name
RCAY	key word specifying a GaAs MESFET model
TYPE	indicates NJF (N-channel MESFET) or PJF (P-channel MESFET)
PNAME#	indicates UCB GaAs MESFET parameter name
PVAL#	indicates parameter value of PNAME#

The parameter MODEL in the .MODEL description must be set.

MODEL = 3 indicates UCB GaAs MESFET model

IC-CAP allows you to assign node names to node numbers, simplifying references to nodes (by a meaningful name). For more information, refer to "Assigning Node Names" in the Reference.