Chapter 7, library encryption describes the synopsys library encryptor and how to use it to protect your intellectual property. I can access to the differents currents of the subcircuits by the way of a. Ltspice iv getting started guideltspice iv getting started. Hspice simulation and analysis user guide version y2006. The node name is cross referenced in the output listing file starhspice produces. I saw in the hspice 2004 manual that an instruction isub should allow to probe the current of a subcircuit node. Mn instruction where x1 is the subcircuit, and mn the element of the subcircuit. Extract schematic for netlist using instructions given in the netlist extraction procedure below.
The procedure for opening an xwindow varies depending on the type of computer you are using. Quick spice introduction michigan state university. Chapter 4 specifying simulation output class home pages. Subckt file, which doesnt seem to be legal in ltspice. Mod download it, it is an ascii file in spice format. Ltspice iv getting started guideltspice iv getting started guide. Hspice is just a program that takes in a netlist a simple text. Their model names and parameters are defined in the spice directive lock xspd1. In the edit window that opens, use the search box to search for the name of your subcircuit not the name of its file. For descriptions of the other manuals in the hspice documentation set, see the next section, the hspice. As mentioned in the above comment we can write subcircuitsor any other part of netlist in a different file.
If you have questions, read the section on workstation basics later in this handout. Unfortunately it appears that there is only an hspice model, which i assumed had almost identical syntax to ltspice. Ends subcircuits for opamp simulation commercial opamps often provide a model subcircuit netlist include opamp model subcircuit in your spice file call opamp model with single subcircuit element line ece 445. If its name contains version xxplus, it describes the actual code status, found at the date of issue in. Spice quick reference sheet the general anatomy of a. Hspice also has specific file naming conventions to indicate the function of each file. It remains the customers responsibility to verify proper and reliable operation in the actual application. Lib and the model you want to use is a subcircuit called 1n5338b. Spice quick reference sheet the general anatomy of a spice. Spectre circuit simulator user guide columbia university. Computer modeling of electronic circuits with ltspice. Hspice tutorial university of california, berkeley.
How to use this manual the manual is a work in progress. Inside this manual this manual contains the chapters described below. Virtuoso analog design environment user guide product version 5. Place a subcircuit symbol in the schematic and double click it to edit it. Subckt command in spice electrical engineering stack. It relates the subcircuit node names in subcircuit call statements to the node names used in the corresponding subcircuit definitions. The way to define such spice models will be explained in section 3 defining spice models. Include statement includes other netlist as subcircuit into current netlist ge. To print this manual 1 in acrobat reader, from the file menu, choose print. Solved subcircuit capacitance measurement in hspice. Tutorial how to use the spice module psim software.
If there is a graphic image next to its name in the listing then 5spice has found a. Suppose the file that contains the model you want to use is called 1n5338b. However, you will need to explicitly command hspice to generate the extra. 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. Hspice simulation and analysis user guide version x2005. I need to find out the capacitance of an internal node in this circuit is there a command in hspice to do this. To distribute device libraries only, create a unique subcircuit file for each device. It relates the subcircuit node names in subcircuit call statements to the node names used in. To create a reusable circuit, it must be constructed as a subcircuit. 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. Tutorial how to use the spice module 3 the mosfet has a model name si4628dy and is a subcircuit block defined with the.
User may either write a new subcircuit netlist or use a pre. The page numbers in the rest of this document refer to this manual. How to print this online manual you can print any portion of this manual, or the entire book, to keep as a printed reference. The ground node must be indicated by either the number 0, the. Awaves is a program that allows you to graphically plot the results of the hspice analysis. Hsice simulation guide penn state college of engineering. Then, control statements tell spice what type of analysis to perform on the circuit. Option macmod enables hspice mosfet to access the subcircuit definition when there is no matching model reference or enables an hspice xelement to access the model reference when there is no matching. Feed the simulator with a handcrafted netlist or a foreign netlist generated with a different schematic capture tool.
When a variable is included in italicized text, the variable is enclosed by angle brackets. Spectre circuit simulator user guide january 2004 7 product version 5. Hspice uses subcircuit calls to read encrypted information. Audience this manual is intended for design engineers who use starhspice to develop, test, analyze, and modify circuit designs. If there is a file missing, of a different size, or a difference between the local checksum and the one from the index file, then that file will be updated automatically.
Before running hspice, users should execute the command source usrclassee dot. Tips for using hspice university of california, berkeley. Youll save a bit of time if the new device at least looks similar to one in the existing library. Audience this manual is intended for design engineers who use star hspice to develop, test, analyze, and modify circuit designs. As i can understand subcircuitname and the first node of the subcircuit are mandatory. The hspice netlist is the subcircuit definition of the corresponding gate. I am using the amplifier in the form of a subcircuit. To save a spice subcircuit linked with an image so that it can be used in psim schematics the same way as any other psim element, psim provides the image library editor. In this case you can add add a subcircuit model for a device. First, data statements describe the components and the interconnections.
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