eldo_user

Eldo Premier
Other Supported Functionality
• RC reduction (TICER), see “RC Reduction in Eldo Premier” on page 90.
• .OP command, see “Operating Point Analysis in Eldo Premier” on page 92.
• .STEP/.DATA/SWEEP commands, see “.STEP / .DATA / SWEEP Limitations in Eldo
Premier” on page 92.
• Eldo UDRM, see “Reliability Simulation in Eldo Premier” on page 92.
Transient Noise Analysis in Eldo Premier
Eldo Premier supports a subset of the transient noise ( .NOISETRAN) analysis. This is to fulfill
the need of large circuits and long simulations. Transient noise analysis in Eldo Premier
supports optimized models, see .OPTION PREMIER_MODE. Only channel thermal noise and
flicker noise are handled. The supported configuration is a single noisy transient run without a
nominal run, with:
• nonom set
• nbrun set to 1 (single noisy transient run)
• mrun set (the single run algorithm is not used)
Command syntax and parameters available:
.NOISETRAN [fmin=val] fmax=val [nbf=val] [amp=val] [seed=val]
+ [nomod=val] [tstart=val] [tstop=val] [fmin_flicker=val]
Note
The setting of any other Eldo Classic parameters (for example all, nbbins) is ignored.
The noise related parameters specified on device instance lines (nonoise, fmin, fmax, nbf) are
supported.
The simulation results of the .NOISETRAN analysis in Eldo Premier is only one noisy run (per
plot). Any results related to multi-runs (rms and histogram) are not generated.
Verilog-A devices do not generate noise during transient noise analysis in Eldo Premier.
RC Reduction in Eldo Premier
Eldo Premier supports RC reduction as follows:
• .REDUCE command
o
o
The generic .REDUCE command is supported with all options: ANALOG,
FREQUENCY, TUNING, DELAY_ERROR, NOISE_ERROR, ENGINE.
The .REDUCE TICER command is supported with all options except
PORTMERGE.
90
Eldo® User's Manual, 15.3