You can even do mixed sources so that the same supply can be referenced in two different types of analysis, such as. Ltspice is also called switchercad by its manufacturer, since they use it primarily for the design of switch mode power supplies smps. Performing initialization and analysis dc initialization and point analysis 64 starhspice manual, release 1998. This manual describes the starhspice circuit and device simulation software and how to use it. Correct way to simulate and visualize 230v ac voltage in. 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. 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. Voltage source vx has 5volt dc bias pitit il tt d1positive terminal connects to node 1 negative terminal is grounded vh 3 6 dc2 ac1,90 voltage so rcevoltage source vh has 2has 2volt dc bias 1olt dc bias, 1volt rms ac bias ith 90 degreeolt rms ac bias, with 90 degree phase offset positive terminal connects to node 3. Using sources and stimuli independent source elements starhspice manual, release 1998. In this tutorial, we will again use the hspice on engineering workstation. Computer modeling of electronic circuits with ltspice. Spice quick reference sheet the general anatomy of a.
Calculation for total dissipated power and for voltage source power 282. Hsice simulation guide penn state electrical engineering. The ac analysis is set to 1 point with a start and stop frequency of 60hz. In some circuits, you may need to refer to a voltage source or circuit node later in an analysis statement, but context will always make it clear which you are referring to so a source and node having the same name will never cause ambiguities. Hspice simulation and analysis user guide version y2006. See voltage controlled voltage source vcvs in the hspice simulation and analysis user guide. Ac statement ac sweep and signal analysis 96 star hspice manual, release 1998. Originally developed at berkeley in the late 60s and early 70s, spice has evolved into one of the tools of choice for circuit simulation. An ac voltage source is defined between vsig node and ground, with its ac magnitude being nominally 1 volt. A voltage amplifier with supply limits can be built with the voltage controlled voltage source.
If its name contains version xxplus, it describes the actual code status, found at the date of issue in the git source code management scm tool. Resistor r b and capacitor c b form a b1 2015 oxford university press reprinting or distribution, electronically or otherwise, without the express written consent of oxford university press is prohibited. However, if i simulate such a power source, i get the voltage wave up to 325v, whereas i want the results to be in 230v format. The frequency of any ac source in the circuit is set to fstart. Ac indicates the source is to be used in ac small signal analysis.
For this example, the voltage source statement has two functions. Recall that in the voltage and current source cards it is possible to specify an ac qual. Second, it also generates a sinewave source sin for the transient time analysis. Ngspice users manual version 31 describes ngspice release version holger vogt, marcel hendrix, paolo nenzi september 22nd, 2019. Spice quick reference sheet the general anatomy of a spice. Example circuits and netlists using the spice circuit. The linked sites, articles and presented information are provided as a useful insight to help you decide on the type of engineering expert you might need. Hspice tutorial contents 1 introduction 1 2 windows and unix version 1. This sine wave has a dc offset of 0 v, a peak amplitude of 0. Vcontrol is the zero value voltage source used to measure the. We do not provide such technical support for general circuit simulations that are not for the evaluation of ltc products. It is important to remember that in an ac analysis. This card, of course, is a bit more useful for multifrequency analysis, where a range of frequencies can be analyzed in steps.
Hspice tutorial ac simulation we will construct and analyze a nmos common source amplifier as the example for ac analysis. The positive current direction through the current or voltage source is from the positive n1 node to the negative n2 node. Both upper and lower case letters are allowed in pspice and hspice. Pspice model library includes parameterized models such as bjts, jfets, mosfets, igbts, scrs, discretes, operational amplifiers, optocouplers, regulators, and pwm controllers from various ic vendors. How to use this manual the manual is a work in progress. How to use this online manual how to print this online manual welcome overview commands analog devices. The name is the reference designator for the voltage source which in this case is v1.
Hspice mosfet models manual university of rochester. Ac statement ac sweep and signal analysis 96 starhspice manual, release 1998. Independent source elements using sources and stimuli 52 star hspice manual, release 1998. For example, you can specify a dc source specified together with an ac source and transient source, all of which are connected to the same nodes. For information on how to perform searches across multiple pdf documents, see the hspice release notes. Data statements basic components resistors capacitors and inductors voltage and current sources independent dc sources independent ac sources transient sources sinusoidal sources piecewise linear source pwl pulse. Example circuits and netlists chapter 7 using the spice circuit simulation program. It should be set to zero if you need a pure sinusoid. Some types of analysis use the associated analysis sources. Hspice is just a program that takes in a netlist a simple text file, containing a circuit description and. The dc sweep analysis varies a voltage source over a range of voltages in an assigned number of increments in a linear or logarithmic fashion. So, does ltspice require the ac voltage amplitude in some special. Chapter 11, using hspice with hspice rf describes how various analysis features differ in hspice rf as compared to standard hspice.
Hsice simulation guide penn state college of engineering. Related documents the following documents pertain to. Syntax notation the meaning of a parameter may depend on its location in the statement. The max and min parameters specify a maximum e1 voltage of 5 v and a minimum e1 voltage. Hspice simulation and analysis user guide department of. Spice reads in a list of circuit nodes and the elements between. The frequency increment value is defined by the increment option.
Some of this was written using switchercad iii, and some was written using ltspice iv. The output data will therefore be in reference to the source speci. The ac small signal analysis portion of starhspice computes see figure 91. Holger vogt, marcel hendrix, paolo nenzi may 27, 2018. Brief introduction to hspice simulation wojciech giziewicz. Ac sweepnoise the ac sweepnoise analysis varies the operating frequency in a linear or logarithmic manner. Hspice applications manual, and hspice command reference. Be sure that a complete set of parameters is entered in the correct sequence before. You can print any portion of this manual, or the entire book, to keep as a printed reference. May 12, 2017 for an ac analysis, the parameters are. You need to have at least one ac independent source. Input file hspice input is composed of mainly four part. For more specific details and examples refer to the relevant manual. Audience this manual is intended for design engineers who use star hspice to develop, test, analyze, and modify circuit designs.
Follow these instructions to run remote desktop connection. For ac analysis, the data file must include at least one independent ac source element command for example, vi input gnd ac 1v. For the voltage source above, we can start by looking only at the response at the frequency of the source. Hspice tutorial university of california, berkeley. Audience this manual is intended for design engineers who use starhspice to develop, test, analyze, and modify circuit designs. Ac amplitude which is the peak value of the voltage. You have to explicitly tell hspice to generate the extra. Ac command, hspice runs ac analysis for the circuit over a selected frequency range for each parameter in the second sweep. While ltspice is a windows program, it runs on linux under wine as well. Chapter 5 using sources and stimuli class home pages. Vin in 0 ac 1v we want an ac voltage source so that we can examine the frequency domain performance of the filter rin in n1 500k cin n1 v. The frequency of any ac source in the circuit is set to. So, does ltspice require the ac voltage amplitude in some special format.
Data statement, and temperature sweep are selected, a parameter name must be chosen for the source value and subsequently referred to in the. Must begin with an i followed by up to 15 alphanumeric characters. Hspice calculates the operating condition, and form a smallsignal equivalent circuit for the given netlist. Awaves is a program that allows you to graphically plot the results of the analysis that hspice did. Vh 3 6 dc2 ac1,90 voltage so rcevoltage source vh has 2has 2volt dc bias 1olt dc bias, 1volt rms ac bias ith 90 degreeolt rms ac bias, with 90 degree phase offset positive terminal connects to node 3. Chapter 9 ac sweep and signal analysis class home pages. If so, how do i get the correct visual plot results. To use this feature, the hspice documentation files, the index directory, and the index. Figure 1 shows the pspice schematic for a circuit that was analyzed in class.