Question about Hspice accurate option

[sandeepkothinti]

Hi, i have used this statement in my hspice simulation.
.option accurate
do I have to specifically put accurate=1 if i want to use accurate option?
Is there a way where i can check DVDT value after simulation?

Thanks

 

[erikl]

.option accurate
do I have to specifically put accurate=1 if i want to use accurate option?

See the command reference:

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.OPTION ACCURATE
SYNTAX:
.OPTION ACCURATE=x DESCRIPTION:
Selects a time algorithm that uses LVLTIM = 3 and DVDT = 2, for circuits such as high-gain comparators. Use this option with circuits that combine high gain and large dynamic range, to guarantee accurate solutions in HSPICE. When set to 1, ACCURATE sets these control options:
• LVLTIM = 3
• DVDT=2
• RELVAR = 0.2
• ABSVAR = 0.2
• FT=0.2
• RELMOS = 0.01
The default is 0.
SEE ALSO:
.OPTION DVDT .OPTION LVLTIM

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.OPTION DVDT
SYNTAX:
.OPTION DVDT=x DESCRIPTION:
Adjusts the timestep, based on rates of change for node voltage. The default is 4.
• 0 - original algorithm • 1-fast •   2 - accurate •    3,4 - balance speed and accuracy

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Is there a way where i can check DVDT value after simulation?

Yes, in your .log file.