General Form:
EXP(V1 V2 TD1 TAU1 TD2 TAU2)
Examples:
VIN 3 0 EXP(-4 -1 2NS 30NS 60NS 40NS)
parameter default value units --------------------------------------------------------- V1 (initial value) Volts or Amps V2 (pulsed value) Volts or Amps TD1 (rise delay time) 0.0 seconds TAU1 (rise time constant) TSTEP seconds TD2 (fall delay time) TD1+TSTEP seconds TAU2 (fall time constant) TSTEP seconds
The shape of the waveform is described by the following table:
time value --------------------------------------------------------------------- 0 to TD1 V1 | -(t - TD1)| TD1 to TD2 V1 + (V2-V1).|1-e ----------| | TAU1 | | -(t - TD1)| | -(t - TD2)| TD2 to TSTOP V1 + (V2-V1).|1-e ----------| + (V1-V2).|1-e ---------| | TAU1 | | TAU2 |