Professor Ronald L. Carter ronc@uta.edu http://www.uta.edu/ronc/ Semiconductor Device Modeling and Characterization – EE5342 Lecture 15 – Spring 2011 Professor Ronald L. Carter ronc@uta.edu http://www.uta.edu/ronc/

Small signal diode Z-parameter** ©rlc L15-04Mar2011

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 ©rlc L15-04Mar2011

Small signal low and high freq. limits for Z-par.** ©rlc L15-04Mar2011

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. ©rlc L15-04Mar2011