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MOSFET Instance, Advanced SPICE Level 2 Model (Level 8)

MOSFET Instance, Advanced SPICE Level 2 Model (Level 8)

Advanced SPICE Level 2 (HSPICE Level 8) Instance Netlist Syntax

The syntax for a Advanced SPICE Level 2 (HSPICE Level 8) MOSFET instance is:

Mxxxx nd ng ns [nb] modelname [[L=]length] [[W=]width]

[AD=val] [AS=val] [PD=val] [PS=val]

[NRD=val] [NRS=val] [VDSAT=val] [DTEMP=val]

[M=val] [TEMP=val] [ASPEC=val] [SCALE=val]

nd is the drain node, ng is the gate node, ns is the source node, and nb is the bulk or substrate node of the MOSFET. modelname is the name of a Level 8 MOSFET model defined in a .MODEL statement elsewhere in the netlist.

When the option WL is in effect (on the .OPTION statement), the syntax becomes:

Mxxxx nd ng ns [nb] modelname [width] [length]

[AD=val] [AS=val] [PD=val] [PS=val]

[NRD=val] [NRS=val] [VDSAT=val] [DTEMP=val]

[M=val] [TEMP=val] [ASPEC=val] [SCALE=val]

**Level 8 MOSFET Instance Parameters**
Instance Parameter	Description	Unit	Default
AD	Drain diffusion area	Meter²	0.0
AS	Source diffusion area	Meter²	0.0
ASPEC	ASPEC option	None	0.0
DTEMP	Difference between MOSFET and circuit temperatures	°C	0.0
L	MOSFET channel length	Meter	1.0e-4
M	Multiplier: simulates parallel transistors	None	0.0
NRD	Number of squares of drain diffusion for resistance calculations	None	0.0
NRS	Number of squares of source diffusion for resistance calculations	None	1.0
PD	Drain diffusion periphery	Meter	0.0
PS	Source diffusion periphery	Meter	0.0
SCALE	Scale factor for instance parameters	None	1.0
TEMP	Device temperature	°C	Calculated
VDSAT	Saturation voltage	Volt	0.0
W	MOSFET channel width	Meter	1.0e-4

Level 8 MOSFET Instance Netlist Examples

M1 10 11 12 mosfet1

M12 G3 VDD 0 0 mosfet2 M=2 DTEMP=30

Mtest 34 56 78 90 fetex

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