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Star-Hspice Quick Reference Guide

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MOSFET Introduction<br />

Name (Alias) Unit Default Description<br />

WMLT - 1 Width diffusion layer<br />

shrink reduction factor<br />

XJ m 0 Metallurgical junction<br />

depth<br />

XW (WDEL,<br />

DW)<br />

m 0 Accounts for masking<br />

and etching effects<br />

See “Using MOS Geometry Model Parameters” in the<br />

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

Common Threshold Voltage Parameters<br />

Name (Alias) Unit Default Description<br />

DELVTO V 0.0 Zero-bias threshold<br />

voltage shift<br />

GAMMA V 1/2 0.527625 Body effect factor<br />

NGATE 1/cm 3 - Polysilicon gate<br />

doping, used for<br />

analytical model only<br />

NSS 1/cm 2 1.0 Surface state density<br />

NSUB 1/cm 3 1e15 Substrate doping<br />

(DNB, NB)<br />

PHI V 0.576036 Surface potential<br />

9-8 <strong>Star</strong>-<strong>Hspice</strong> <strong>Quick</strong> <strong>Reference</strong> <strong>Guide</strong>

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