1. Professor Ronald L. Carter ronc@uta.edu http://www.uta.edu/ronc/
Semiconductor Device Modeling and Characterization – EE5342 Lecture 14 – Spring 2011
Professor Ronald L. Carter

2. Small signal diode Z-parameter**
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3. SPICE Diode Re{Z} Re{Z} (Ohms) Frequency (Hz) (2pTT)-1 1 mA 10 mA
CJ0 = 1E-12
VJ = 0.75
M = 0.5
TT = 1E-9
(2pTT)-1
1 mA
100 pA
1 nA
10 nA
100 nA
10 mA
100 mA
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4. Small signal low and high freq. limits for Z-par.**
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5. References
1Semiconductor Device Modeling with SPICE, 2nd ed., by Massobrio and Antognetti, McGraw Hill, NY, 1993.
**OrCAD Pspice A/D Reference Guide, Copyright 1999, OrCAD, Inc.
***MicroSim OnLine Manual, MicroSim Corporation, 1996.
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