Circuit Element Quick Reference

 

Component

Syntax

Special functions

Axx n1 n2 n3 n4 n5 n6 n7 n8

+ <model> [extra parameters]

Arbitrary behavioral source

Bxx n+ n- <V=... or I=...>

Capacitor

Cxx n+ n- <capacitance>

+ [ic=<val.>] [Rser=<val.>]

+ [Lser=<val.>] [Rpar=<val.>]

+ [Cpar=<val.>] [m=<val.>]

Diode

Dxx A K <model> [area]

Voltage dependent voltage

Exx n+ n- nc+ nc- <gain>

Current dependent current

Fxx n+ n- <Vnam> <gain>

Voltage dependent current

Gxx n+ n- nc+ nc- <transcond.>

Current dependent voltage

Hxx n+ n- <Vnam> <transres.>

Independent current source

Ixx n+ n- <current>

JFET transistor

Jxx D G S <model> [area] [off]

+[IC=<Vds,Vgs>] [temp=<T>]

Mutual inductance

Kxx L1 L2 L3… <coeff.>

Inductance

Lxx n+ n- <inductance>

+ [ic=<val.>] [Rser=<val.>]

+ [Rpar=<val.>]

+ [Cpar=<val.>] [m=<val.>]

MOSFET transistor

Mxx D G S B <model> [L=<len>]

+ [W=<width>] [AD=<area>]

+ [AS=<area>] [PD=<perim>]

+ [PS=<perim>] [NRD=<value>]

+ [NRS=<value>] [off]

+ [IC=<Vds, Vgs, Vbs>

+ [temp=<T>]

Lossy transmission line

Oxx L+ L- R+ R- <model>

Bipolar transistor

Qxx C B E [S] <model> [area]

+ [off] [IC=Vbe,Vce][temp=<T>]

Resistor

Rxx n1 n2 <value>

Voltage controlled switch

Sxx n1 n2 nc+ nc- <model>

+ [on,off]

Lossless transmission line

Txx L+ L- R+ R- ZO=<value>

+ TD=<value>

Uniform RC-line

Uxx n1 n2 ncommon <model>

+ L=<len> [N=<lumps>]

Independent voltage source

Vxx n+ n- <voltage>

Current controlled switch

Wxx n1 n2 <Vnam> <model>

+ [on,off]

Subcircuit

Xxx n1 n2 n3... <subckt name>

MESFET transistor

Zxx D G S model [area] [off]

+ [IC=<Vds,Vgs>]