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Star-Hspice Quick Reference Guide

Star-Hspice Quick Reference Guide

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Model Analysis Options<br />

Option<br />

PZTOL<br />

RITOL<br />

(X0R,X0I),<br />

(X1R,X1I),<br />

(X2R,X2I)<br />

Description<br />

Sets the relative error tolerance for poles or<br />

zeros.<br />

Sets the minimum ratio value for (real/<br />

imaginary) or (imaginary/real) parts of the<br />

poles or zeros.<br />

The three complex starting points in the<br />

Muller pole/zero analysis algorithm<br />

See “Pole/Zero Control Options” in the <strong>Star</strong>-<strong>Hspice</strong> Manual.<br />

Transient Control Options<br />

Option<br />

Description<br />

ABSH = x<br />

ABSV = x<br />

ACCURATE<br />

ACOUT<br />

Sets the absolute current change through<br />

voltage defined branches (voltage<br />

sources and inductors).<br />

Same as VNTOL. See VNTOL.<br />

Selects a time algorithm that uses<br />

LVLTIM = 3 and DVDT = 2 for circuits<br />

such as high-gain comparators.<br />

AC output calculation method for the<br />

difference in values of magnitude, phase<br />

and decibels for prints and plots.<br />

<strong>Star</strong>-<strong>Hspice</strong> <strong>Quick</strong> <strong>Reference</strong> <strong>Guide</strong> 12-15

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