Issue link: https://resources.pcb.cadence.com/i/1180526
PSpice User Guide AC analyses October 2019 490 Product Version 17.4-2019 © 1999-2019 All Rights Reserved. AC sweep analysis Setting up and running an AC sweep The following procedure describes the minimum setup requirements for running an AC sweep analysis. For more detail on any step, go to the pages referenced in the sidebars. To set up and run an AC sweep 1. Place and connect a voltage or current source with an AC input signal. To find out how, see Setting up an AC stimulus on page 491. 2. From the PSpice menu, select New Simulation Profile or Edit Simulation Profile. (If this is a new simulation, enter the name of the profile and click OK.) The Simulation Settings dialog box appears. 3. Choose AC Sweep/Noise in the Analysis type list box. 4. Specify the required parameters for the AC sweep or noise analysis you want to run. To find out how, see Setting up an AC analysis on page 494. 5. Click OK to save the simulation profile. 6. From the PSpice menu, select Run to start the simulation. What is AC sweep? AC sweep is a frequency response analysis. PSpice calculates the small-signal response of the circuit to a combination of inputs by transforming it around the bias point and treating it as a linear circuit. Here are a few things to note: ■ Nonlinear devices, such as voltage- or current-controlled switches, are transformed to linear circuits about their bias point value before PSpice runs the linear (small-signal) analysis. To find out more, see How PSpice treats nonlinear devices on page 498.