General form (the PHASE parameter is only possible when XSPICE is enabled):

SIN(VO VA FREQ TD THETA PHASE)

Examples:

VIN 3 0 SIN(0 1 100MEG 1NS 1E10)

The shape of the waveform is described by the following formula:

[\begin{array}{ll} {V\left( t \right) = \begin{cases} {V0} & {{if 0 \leq t} < TD} \ {V0 + VA e^{- ({t - TD})THETA}\sin\left( {2\pi \cdot FREQ \cdot \left( {t - TD} \right) + PHASE} \right)} & {{if} TD \leq t < TSTOP.} \ \end{cases}} & \ \end{array}]