Analog Design Verification with PSpice and MICRO-CAP III
Summary rept. Jan-Mar 1990,
NAVAL WEAPONS CENTER CHINA LAKE CA
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Computer simulation has become very important in the design world. Few engineers design a circuit and send it right to the shop to be built. Instead, some level of simulation is used. Because fewer prototype boards need to be built, simulation saves a designer many hours of debugging time in the lab and quite a bit of money. Digital simulators are considered to be very accurate and indispensable tools. However, analog and mixed analog analog and digital simulators have not been perfected. With a digital chip, everything is black and white or one and zero. Only the timing raises some questions. Within an analog circuit, the model is one of the most important items. Without good device model, the simulation is worthless. Two bipolar models are most popular Gummel- Poon and Ebers-Moll. In this document the operation of PSpice is explained. The capabilities of PSpice and MICRO-CAP III are discussed. Two example circuits were designed, built, and tested in the lab and on the computer using PSpice and MICRO-CAP III. Calculations done by hand are compared to those obtained in the lab and on the computer.
- Electrical and Electronic Equipment
- Computer Programming and Software