eldo_user

Eldo Premier
Eldo Premier Selectable Accuracy Option
Table 3-1. Option PREMIER_MODE Effect
PREMIER_MODE OFF 1 2 (Default) 3 4
Option
Tuning
(.OPTION TUNING)
Device Model
Optimization
(.OPTION
ELDO_MODEL_MOD
E)
Mininum R val
(.OPTION
MINRVAL.OPTION
RMMINRVAL)
Split C val
(.OPTION SPLITC)
Reduction
(.OPTION
ELDO_REDUCTION_
MODE)
The default value of option PREMIER_MODE is 2 for Eldo Premier, which provides a
balanced speed/accuracy trade-off. This option is equivalent to the Eldo command line
argument -premier_mode. This option is not available in Eldo Classic, it is deactivated.
The actions and associated options are as follows:
• Accuracy tuning
Default
(standard)
or
specified
Selects the default mode of operation of Eldo as regards to precision and speed.
• Device model optimization
Accurate
or
specified
Device models are optimized with an average speed-up of 30%, on the total transient
simulation time, compared to simulation with standard models. Device model
optimization is disabled in a circuit with high voltage (above 6V) sources detected.
• Removal of small linear resistors and floating capacitor simplification
Simulation is accelerated by removing linear resistors and simplifying floating
capacitors with values below a given threshold.
• Default activation of reduction in Eldo Premier
Default
(standard) or
specified
Default
(standard) or
specified
No Yes Yes Yes Yes
Fast or
specified
No 1 mΩ 1 mΩ 1 mΩ 1 mΩ
No 10 −18 F 10 −17 F 10 −16 F 10 −16 F
No No Frequency=
1/hmin
Analog=yes
Estimated
frequency
Analog=yes
Estimated
frequency
Analog=no
72
Eldo® User's Manual, 15.3