Simulation with hspice university of texas at dallas. Hspice supports source value sweep, referring to the source name. The popularity of the spice circuit simulator has translated into various offerings, suited for different compute platforms. A native simulation analysis environment to set up, manage, and monitor simulations and postprocess simulation results for analog verification productivity improvement. In ltspice, ac analysis involves computing the ac complex node voltages as a function of frequency using an independent voltage or current source as the driving signal. Here is an example of a simple rc circuit file where a step input is applied to r1. Use source element statements to specify either dc, ac, transient. Calculation for total dissipated power and for voltage source power 282. Select download center hspice version number release notes. For small signal analysis, such a large value would of course be prohibited, but recall that ac analysis in hspice is performed on a linearized circuit model around the dc operating point. Use transient sim operating point for a ac sim in hspice i wanted to see how i can use operating point info obtained from a transient simulation at a given time for a ac simulation in hspice. A voltage source is like a battery, or labbench power supply. In the second the ac values of these 2 sources are. Richard newton gives a history of spice as part of his presentation of the 1995 phil kaufman award to professor donald o.
Filter by license to discover only free or open source alternatives. Select dc sweep and enter name of first source to sweep. It can perform steady state dc, small signal ac, and transient analyses. Using positive current convention, current flows out from the first. This list contains a total of 5 apps similar to hspice. Measure statement use used to measure the propagation delay from the step input at node a to a 50% rise in voltage at. Based on a preparsed, condensed extract, and optionally a quicklookup index, it finds and shows identified items in the entire source code, even of. Hspice to ltspice electronics forum circuits, projects. In this testbench, the ac resistor in the previous example is replaced by two voltage sources both of 0v dc thus the closed loop is maintained and a 0a ac current source to ground. Vsin sinusoidal voltage source model online documentation for. Hspice input file for the circuit is given below where. This handout will cover the basics to get you started. Pyspice is a python module which interface python to the ngspice and xyce circuit simulators.
The ac analysis is set to 1 point with a start and stop frequency of 60hz. This will open the simulation dialog ac sweep should already be selected with specific values entered for start freq and end freq. Ac analysis to perform an ac analysis, click on the ac analysis tab and enter the type of sweep, number of analysis points, and the stop and start frequencies. For the voltage source above, we can start by looking only at the response at the frequency of the source. Now that we have a handle on all of the new buttons and features, follow along with the steps below to run your first ac sweep simulation. Ac statement ac sweep and signal analysis 96 starhspice manual, release 1998. Calculation for total dissipated power and for voltage source power 275. Now the source v1 is increased by 1v between 0 and 4v, and it is set to perform dc sweep analysis.
View instruction note download design files simulating the ltc4211 hot swap controller with pspice hot swapping in electrical and electronics is the addition or removal of a subsystem, or a component. If you installed cst, you will have to avoid using 27000 port, because its occupied, try replacing 27000 with 27002 in your hspice license file. Ac voltage source is defined between vsig node and ground, with its ac magnitude being nominally 1 volt. However, you will need to explicitly command hspice to generate the extra. It is an integrated tool built using open source software packages kicad, ngspice and scilab and runs on linux and ms windows.
In the simulation profile, select ac sweep and define the start, end frequency as well as the number of points per decade e. First order lowpass filter now use as voltage source. Downloadable tools university of california, berkeley. Cadence pspice technology offers more than 33,000 models covering various types of devices that are included in the pspice software. Trying to find a greater than 240v ac source on 150w 12v dc to 240v ac.
Use transient sim operating point for a ac sim in hspice. Cscope is a text screen based source browser, which can double as a behindthe scenes source code navigation aid for classic programmers editors like emacs or vim, too. We will be using the version of spice available on athena called hspice. Consider the sinusoidal voltage source in the above image, with the following characteristics. Chapter 9 ac sweep and signal analysis class home pages. You can even do mixed sources so that the same supply can be referenced in two different types of analysis, such as. The passive elements are ror rfor resistors, lor lfor inductors, and cor cfor capacitors. Look at the installation section in the documentation. The small signal analysis results are plotted in the waveform viewer as magnitude and phase over frequency.
Hspice is an analog circuit simulator similar to berkeleys spice3 capable of performing transient, steady. Plot timedomain waveform with option of eye diagram generation. The starhspice optimizing analog circuit simulator is a industrialgrade circuit analysis product for the simulation of electrical circuits in steadystate, transient, and frequency domains. It has the advantage of being freely available, to support a wide variety of models, and to run on all unix platforms.
Application of this waveform requires the specification of the sine wave frequency, the exponential decay. Awaves is a program that allows you to graphically plot the results of the hspice analysis. Export plots to vectorbased graphic formats eps and svg. Spice spice is a circuit simulator, more information about spice can be found at the spice homepage professor a. Ese 216 pspice with orcad capture penn engineering. Sometimes the frequency response of a circuit is more important than looking at the individual voltages or currents at a specific part of the schematic. The release of spice, still the industry standard tool for integrated circuit design. Chapter 5 using sources and stimuli class home pages. Pederson may, 2002 berkeley lab notes article, 1972. Ac type np fstart fstop where np is the number of points and type can be either oct, dec or lin. Hspice is just a program that takes in a netlist a simple text.
Hspice tutorial university of california, berkeley. Data statement, and temperature sweep are selected, a parameter name must be chosen for the source value and subsequently referred to in the. Using sources and stimuli starhspice independent source functions starhspice manual, release 1998. The simulationready sinusoidal voltage source component vsin can be found in the simulation sources integrated library \library\simulation\simulation sources. The documentation is available on the pyspice home page. In the first, we set the ac value of vprobe1 to 1 and the ac value of iprobe 1 to zero. Spice quick reference sheet the general anatomy of a. Electronic circuit optimization this project is dedicated to the optimization of any electrical and electronic circuits and compon. Alternatives to hspice for windows, mac, linux, software as a service saas, web and more. Plot frequencydomain variables filtered by the magnitude, phase, db, real or image function.
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