Position: Microelectonronics Recitation and Simulation Instructor

 

Organized recitation lectures and prepared quizzes testing student’s understanding of dc, tran­sient and small-signal analysis of non-linear integrated circuits using diodes, BJTs and MOSFETs. Designed three SPICE2G.6 simulations projects. First project required a transients analysis of an RC circuit possessing two RC time constants drive a 6 volt step function. Purpose of this project was to compare student’s calculated solutions with SPICE simulated results. Designed second SPICE simulation project to use the SPICE2G.6 diode model to simulate clipping and wave shap­ing circuits using the 1N4001 and 1N751A diodes. Students extracted model parameters for their diodes, used a simple diode model to predict each circuits’ response and compared their calcu­lated solutions with SPICE2G.6 simulated results. Designed a SPICE simulation project using BJT amplifiers with active loads. The first parts of this project required student’s to design, ana­lyze and simulate a CC-CE amplifier with a two transistor current mirror and a base current com­pensated current mirror using specified constraints on transistor area, passive resistors, bias and power dissipation. The parts of this project asked students to design and simulate the dc and small-signal characteristics of a CE-ED amplifier using a Widlar current mirror as an active load. The purpose of this project was to emphasize the difference between discrete and integrated designs of BJT amplifiers. I modified the subroutine MODCHK in the SPICE2G.6 source code to automatically list semiconductor default model parameters when a model parameter was not spec­ified by the use in the spice input deck.