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PSpice A/D User Guide Things you need to know October 2019 32 Product Version 17.4-2019 © 2022 All Rights Reserved. What is PSpice A/D? PSpice A/D 1 is a simulation program that models the behavior of a circuit containing any mix of analog and digital devices. Because the analog and digital simulation algorithms are built into the same program, PSpice A/D simulates mixed-signal circuits with no performance degradation because of tightly coupled feedback loops between the analog and digital sections. Used with design entry tools 2 such as OrCAD Capture or Design Entry HDL for design entry, you can think of PSpice A/D as a software-based breadboard of your circuit that you can use to test and refine your design before ever touching a piece of hardware. Run basic and advanced analyses PSpice A/D can perform: ■ DC, AC, and transient analyses, so you can test the response of your circuit to different inputs. ■ Parametric, Monte Carlo, and sensitivity/worst-case analyses, so you can see how your circuit's behavior varies with changing component values. ■ Digital worst-case timing analysis to help you find timing problems that occur with only certain combinations of slow and fast signal transmissions. Note: Digital worst-case timing analysis is not available in PSpice A/D. The range of models built into PSpice A/D include not only those for resistors, inductors, capacitors, and bipolar transistors, but also these: ■ transmission line models, including delay, reflection, loss, dispersion, and crosstalk 1. Depending on the license available, you will access either PSpice A/D or PSpice Simulator. 2. In this guide, design entry tool is used for OrCAD Capture and Design Entry HDL. Any differences between the two tools is mentioned, if necessary.