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Star-Hspice Quick Reference Guide

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MOSFET Element Statement<br />

Name (Alias) Unit Default Description<br />

TPG (TPS) - 1.0 Type of gate<br />

material, used for<br />

analytical model only<br />

VTO (VT) V - Zero-bias threshold<br />

voltage<br />

See “Common Threshold Voltage Parameters” in the<br />

<strong>Star</strong>-<strong>Hspice</strong> Manual.<br />

Impact Ionization Model Parameters<br />

Name (Alias) Unit Default Description<br />

ALPHA 1/V 0.0 Impact ionization<br />

current coefficient<br />

LALPHA µm/V 0.0 ALPHA length<br />

sensitivity<br />

WALPHA µm/V 0.0 ALPHA width<br />

sensitivity<br />

VCR V 0.0 Critical voltage<br />

LVCR µm ⋅ V 0.0 VCR length sensitivity<br />

WVCR µm ⋅ V 0.0 VCR width sensitivity<br />

IIRAT - 0.0 Portion of impact<br />

ionization current that<br />

goes to source.<br />

See “Using Impact Ionization Model Parameters” in the<br />

<strong>Star</strong>-<strong>Hspice</strong> Manual.<br />

<strong>Star</strong>-<strong>Hspice</strong> <strong>Quick</strong> <strong>Reference</strong> <strong>Guide</strong> 9-9

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