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CACD Group updated 2001.06.14 Author Arpad Buermen |
Simulator options (for inclusion in your netlist)****************************************************************************** ****************************************************************************** ** Options, defaults ****************************************************************************** ****************************************************************************** * Temperature ****************************************************************************** * Nominal temperature *.options tnom=27 * * Operating temperature *.options temp=27 ****************************************************************************** * Convergence and precision ****************************************************************************** * Minimum conductance *.options gmin=1e-12 * * Relative error tolerence *.options reltol=1e-3 * * Absolute error tolerence *.options abstol=1e-12 * * Voltage error tolerence *.options vntol=1e-6 * * Charge error tolerence *.options chgtol=1e-14 * * Truncation error overestimation factor * SPICE3=7, XSPICE=1, smaller means more precise * XSPICE changed the default from 7 to 1 *.options trtol=1 * * Minimum acceptable pivot *.options pivtol=1e-13 * * Minimum acceptable ratio of pivot *.options pivrel=1e-3 * * Allow bypass of unchanging elements *.options bypass=1 * * DC iteration limit *.options itl1=100 * * DC transfer curve iteration limit *.options itl2=50 * * Lower transient iteration limit (has no effect) *.options itl3=xxx * * Upper transient iteration limit *.options itl4=10 * * Total transient iteration limit (has no effect) *.options itl5=xxx * * Number of source steps *.options itl6=10 * also named *.options srcsteps=10 * * Number of Gmin steps *.options gminsteps=10 * * Skip DC OP iterations, go directly to gmin stepping, *.options noopiter * * Integration method * 1=trapezoidal, 2=gear *.options method=1 * * Maximum integration order *.options maxord=2 * * Denominator of first time step to solve the circuit at time t->0 * 0=off *.options icstep=0 * * Minimum time between breakpoints *.options minbreak=no default * * Record operating point for each small-signal analysis *.options keepopinfo ****************************************************************************** * XSPICE options ****************************************************************************** * Maximum analog/event alternations in DCOP *.options maxopalter=nr_of_outputs_on_hybrids+1 * * Maximum event iterations at analysis point *.options maxevtiter=nr_of_event_driven_outputs+1 * * Do not do analog/event alternation in DCOP *.options noopalter * * Transient analysis supply ramping time * 0=off *.options ramptime=0 * * Enable convergence assistance on code models *.options convlimit * * Fractional step allowed by code model inputs between iterations *.options convstep=0.25 * * Absolute step allowed by code model inputs between iterations *.options convabsstep=0.1 * * Use auto-partial computation for all models *.options autopartial * * Shunt resistance from analog nodes to ground *.options rshunt=no default * ****************************************************************************** * SPICE3 models ****************************************************************************** * Default MOSfet length *.options defl=100u * * Default MOSfet width *.options defw=100u * * Default MOSfet area of drain *.options defad=0 * * Default MOSfet area of source *.options defas=0 * * Use old mos3 model (discontinuous with respect to kappa) *.options badmos3 * * Try compaction for LTRA lines *.options trytocompact * ****************************************************************************** * Obsolete ****************************************************************************** * Print accounting *.options acct * * Print a listing *.options list * * Don't print a model summary *.options nomod * * Don't insert page breaks *.options nopage * * Print a node connection summary *.options node * * Print a list of the options *.options opts * * Use SPICE2 MOSfet limiting *.options oldlimit * * Set number of digits printed *.options numdgt * * Total cpu time in seconds *.options cptime * * Time to reserve for output *.options limtim * * Maximum points per analysis *.options limpts * * Generate machine code *.options lvlcod * * Type of timestep control *.options lvltim * ****************************************************************************** * Statistics, read-only, integer ****************************************************************************** * totiter ... Total iterations * traniter ... Transient iterations * equations ... Circuit Equations * tranpoints ... Transient timepoints * accept ... Accepted timepoints * rejected ... Rejected timepoints * trancuriters ... Transient iters per point * ****************************************************************************** * Statistics, read-only, real ****************************************************************************** * time ... Total Analysis Time * trantime ... Transient time * reordertime ... Matrix reordering time * lutime ... L-U decomposition time * solvetime ... Matrix solve time * tranlutime ... transient L-U decomp time * transolvetime ... Transient solve time * loadtime ... Load time ****************************************************************************** |
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