Hspice simulation and analysis user guide version x2005. Data statement, and temperature sweep are selected, a parameter name must. Meta, meta software, modelaccess, modeltools, nanosim, openvera, pathmill, photolynx, physical compiler. Hspice is just a program that takes in a netlist a simple text. This software and documentation contain confidential and proprietary information that is the property of. Spice pioneers reveal history of 40yearold circuit simulator. Dc operating point, dc sweep, and polezero options. Hspice tutorial university of california, san diego.
Ac statement ac sweep and signal analysis 96 star hspice manual, release 1998. Hspice can be found on all the unix machines in sweet hall. You can use any of the following methods to define parameters. Introduction 1 introduction this quick reference guide is a condensed version of the hspice simulation and analysis user guide, hspice applications manual, and hspice command. While performing dc sweep, hspice now invokes the pseudotran analysis for difficult sweep points as well as dc bias calculation. Tanner tspice simulation fast, accurate, foundryproven simulation for demanding analogmixedsignal designs the tanner tspice simulator, part of the tanner tool suite, integrates easily with other design tools in the flow and is compatible with industryleading standards. To illustrate this we will call the input node input and output node output.
Mast, meta, meta software, modelaccess, modelexpress, modeltools. The inputs can be the same for both pspice and hspice. To furthur help dc sweep analysis, you may increase itl2, the number of iterations hspice will take at each dc sweep point. Tran perform a transient analysis differential equation solver see p. One of the first commercial spice simulators was hspice from meta software. Hspice quick reference guide table of contents introduction 1 input and output files 2 behavior macromodeling 6 controlling input 18 analyzing data 41. Select analysis type to dc sweep and select the sweep variable as a global. Hspice is one of spice variations commercialized by a company. In essence thats the same simulation you have described in your netlist only for each point in the sweep an operating point is calculated. Hspice generally has better convergence than spice3 and, because it is a commercial product from metasoftware, is better supported. Dont worry if it takes a couple seconds for hspice to run, but as long as the command completes successfully youll know because it will say hspice job. For a regular resistor model, to plot iv curve, i write. Dcoperating point, dc sweep, ac sweep bode plotting, transient,sensitivity and fourier analysis. Explore 5 apps like hspice, all suggested and ranked by the alternativeto user community.
Hspice is one of spice variations commercialized by a company meta software merged with avant. Is there any way of setting up a sweep of mosfet width and length. This page summarizes some useful information about digital circuit analysis with hspice. Optionally a second source src2 may be specified with associated sweep parameters.
A good way to learn hspice and metawaves is to simulate example files provided by meta software. I am trying to simulate the transfer characteristics of a cmos inverter using ltspice. You can just ignore these and they will automatically be overwritten with each run through the compiler. Spruiell, optimization error surfaces, metasoftware. The manual documents how to apply hspice rf capabilities for. The advantage of using hspice on eniac is that you can run it from your room through a modem connection or over resnet. I want to sweep the mosfet width and length and observe the effects on rise and fall times of the cmos inverter. Spice simulated program with integrated circuit emphasis is a software package capable of modeling and simulating linear and digital circuits. Hspice users manual and metawaves help and manual 7. Is there a way to sweep duty cycle over time in ltspice.
Although there were many free and powerful spice variations, hspice became a standard of accurate circuit simulator. Hspice is the industrys gold standard for accurate circuit simulation and offers foundrycertified mos device models with stateoftheart simulation and analysis algorithms. The hspice default search order for the g file is as follows. This document and the software described herein is only provided under a written. The softwar e and documentation are furnished under a license agreement and. With a userdefined optimization program and a known circuit topology, star hspice automatically selects the design components and model. Leda, mast, meta, metasoftware, modeltools, nanosim, openvera. Leda, mast, meta, metasoftware, modeltools, nanosim, openvera, pathmill, photolynx, physical. Hspice command reference department of electrical and. To understand it, let us assume that in the above example, we wish to know how the waveforms look if the impedance vale is varied between 40 ohms to 60 ohms in steps of 5 ohms. Sep 26, 2001 while performing dc sweep, hspice now invokes the pseudotran analysis for difficult sweep points as well as dc bias calculation.
Using parameters in simulation parameter definition. Hi, in cadence you can sweep a few variables at the same time. It was developed as public domain software at the university of california and versions 2g6 vanilla spice and 3. Hypermodel, i, inspecs, insync, leda, mast, meta, metasoftware, modelaccess, modelexpress, modeltools. Tips for using hspice university of california, berkeley. Hspice is an analog circuit simulator similar to berkeleys spice3 capable of performing transient. The first commercial version of spice is ispice, an interactive version on a timeshare service, national css.
Hspice basics an input netlist file must be created to begin the design entry and simulation process. Hspice simulation and analysis user guide version y2006. Audience this manual is for analog, rf, and mixedsignal circuit designers and engineers who use hspice simulation for ic design and pcb signal integrity analysis. This is the same example as the previous one but written for hspice. You will need to set up a dc sweep with a global parameter named rvariable for a linear sweep from 500u to 100ku in steps of 500u.
Inside this manual this manual contains the chapters described below. If this parameter is used many times in the code, we just need to change the value of the parameter only once and not at all places. Multiple chips arranged in a planar or stacked configuration with an interposer for communication. Hspice stimulus types there are two types of stimulus that we widely use in this class 1. Statistical analysis sweep monte analysis statements hspice only. Analysis and methods hspice version h92 meta software on. Dc sweep of dc operating points capacitances are ignored see p. This software and documentation contain confidential and proprietary information that is. Ac type np fstart fstop where np is the number of points and type can be either oct, dec or lin.
Hspice tutorial parameter sweep in hspice parameter sweeping is a powerful way of generating multiple simulation by varying the value of one particular parameter. Its simplest use is to assign a particular value at the beginning of hspice code. You can also use the program remotely from home or the lab via telnet. If you want the current through a block defined by a subcircuit, then the current is defined as ix, followed by the parts designator, a colon, and the pin as defined. Hspice stimulus types university of southern california. Data statement, and temperature sweep are selected, a parameter name must be chosen for the source value and subsequently referred to in the. However, hspice allows you to name nodes instead of numbering the nodes. I can sweep the frequency in time by using modulate, but i couldnt find any example on creating a varying duty cycle or a duty cycle is swept from zero to 100% at a given frequency f in a time interval. The piecewise linear mode the following figure, shows the graph generated in response to the pwl piecewise linear input stimulus applied between in and gnd.
Brief introduction to hspice simulation wojciech giziewicz 1 introduction this document is based on one written by ihsan djomehri, spring 1999. Hspice generally has better convergence than spice3 and, because it is a commercial product from meta software, is better supported. Hspice is one of spice variations commercialized by a company meta software from engineerin vlsi at islamic azad university. Is there a wayworkaround to sweep duty cycle over time in ltspice. Spicehspice use for usc students introduction and overview. How to sweep a few variables at the same time in hspice. Understanding the dc sweep flow performing dc sweeps using other dc analysis statements. Spice reads in a list of circuit nodes and the elements between. File type file description suffix hspice input input netlist. Hspice how to sweep a few variables and optimize at the same. In addition to simple arithmetic operations hspice also. Hspice is one of spice variations commercialized by a.
Chapter 11 optimizing performance optimization, the automatic generation of model parameters and component values from a given set of electrical specifications or measured data, is available in star hspice. The explanation assumes that the reader knows how to define circuits and components. Note that acdc sweep and transientanalyses must be preceded by the command. Hspice how to sweep a few variables and optimize at the same time. It also allows hierarchical node naming, circuit optimization, input, output, and behavioral algebraics for parameterized cells. Parameters in star hspice are names that have associated numeric values.
In this tutorial, you will practice the steps necessary to perform simulation using. By providing support on multiple platforms, offering support, and fixing problems in the source code, meta software established a successful business and sold 11,000 copies before the company was. The explanation assumes that the reader knows how to. This software and documentation contain confidential and proprietary information that is the property of synopsys, inc. Known limitations and resolved des information about known problems and limitations, as well as about resolved synopsys techni cal action requests s tars, is available in the hspice and avanwaves release notes in solvnet. Hspice probing current of an element defined by subckt. For descriptions of the other manuals in the hspice documentation set, see the next section, the. Spice pioneers reveal history of 40yearold circuit. Introduction spice simulation program with integrated circuit emphasis is a widelyused circuit simulation program. The software and documentation are furnished under a license agreement and.
Originally developed at berkeley in the late 60s and early 70s, spice has evolved into one of the tools of choice for circuit simulation. With over 25 years of successful design tapeouts, hspice is the industrys most trusted and comprehensive circuit simulator. Hbcontinuen specifies whether to use the sweep solution from the previous simulation. A memory architecture in which memory cells are designed vertically instead of using a traditional floating gate. These circuits can contain resistors, capacitors, inductors, transformers, independent sources, dependent sources, switches, transmission. The most prominent commercial versions of spice include hspice originally commercialized by ashawna and kim hailey of meta software, but now owned by synopsys and pspice now owned by cadence design systems. Hspice parameters parameters in hspice are names that can be assigned numeric values. Hspice tutorial university of california, berkeley. However, to view the graphical outputs, you will need to run an xserver e. This manual describes the starhspice circuit and device simulation software. See the hspice and avanwaves release notes for information about new features and lastminute changes. Jan 10, 20 hspice simulatorthe basic analyses that can be carried out using hspice are.
In addition to simple arithmetic operations hspice also accepts the following from ece 529 at illinois institute of technology. Chapter 7 performing transient analysis star hspice transient analysis computes the circuit solution as a function of time. Dc statement this chapter describes how to use the. Dc var startval stopval incr performs a dc sweep on the independent source or parameter var, varying its value from startval to stopval using the increment incr. Star hspice supports source value sweep, referring to the source name spice style. The parameter opt presupposes the existence of previously calculated values, so that honestly i cant see how to dynamically set values to insert them in simulation as initial conditions without those being already known. Hspice circuit simulation automatically looks for a file in the local directory named hspice. There is no manual description about how to use hsplot because it is now unsupported software from avant but again it is more stable and simpler, so usually we dont need their support too much. Hspice command reference electrical and computer engineering.
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