Mapping the symbol pins to the model pins.Mapping the symbol pins to the footprint pins.Selecting and/or editing the component symbol.Selecting a footprint and the component configuration.Components details include symbol and optionally pin, model, and footprint information.
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The tutorial steps you through the process of creating a simulation and PCB layout compatible component in Multisim.
#MULTISIM 12 ONLINE HOW TO#
In the interest of completeness, you will learn how to create an advanced component with two sections. You will create a part with two schematic symbols, two models, but only one footprint. Many components are easier to create and not all steps outlined are required under most circumstances. Multisim also allows users to create simulation-only or layout-only components. Part 2 of the component creation articles, entitled Creating a Custom Component in NI Ultiboard, outlines how to create a custom Ultiboard landpattern for layout. This landpattern is created manually so as to precisely define the shape, size, and dimensions of a Surface Mount Device (SMD). This footprint can be added to the Multisim database to define a custom component. Single Section versus Multi-section ComponentsĪ single-section component is any component that has a single device per chip. A multi-section component is a component that has multiple gates or devices per chip. Examples of multi-section devices include logic gates or operational amplifiers. Letters, increasing from A-Z, enumerate the devices within multi-section components. Simulation-only components are designed to help verify designs they are not transferred to board layout. There is no footprint information associated with them, and their symbols are colored black by default in the Multisim environment to easily identify them. An example of a simulation-only component is an ideal voltage source. Layout-only components do not contribute to a simulation. They have no associated SPICE or behavior model. When connected parallel to the circuit, they will have no impact on the simulation. When connected in series, they will create an open circuit. An example of a Layout-only component is a connector.Ĭreating a Texas Instruments® THS7001 Component in NI Multisim Layout-only components are green on the Multisim environment. The Texas Instruments® THS7001 is an example of a multi-section component. This component has a programmable gain amplifier (PGA) with a separate pre-amplification stage presented in a single integrated circuit (IC) package. In this package, both sections share power and reference voltage connections. The programmable gain is digitally controlled via three TTL-compatible inputs. For more details about this component refer to the file datasheet_ths7001.pdf located in the Downloads section. Step 2: Enter Footprint and Package Information Configure this window as shown in the following figure.Select Tools✼omponent Wizard from the Multisim main menu.Step 1: Enter Initial Component Information In the next steps, you will learn to use the Component Wizard to create the THS7001 in Multisim. In this step you will enter the footprint information. According to the datasheet, this component uses the HTSSOP-20 PowerPAD (PWP) footprint. Select the Master Database in the Database name listbox.Click on the Select a footprint button.You will select this footprint from the Multisim Master Database.
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Configure the Filter window as shown in Figure 2.This helps you do a quick search within the thousands of footprints. Highlight the footprint HTSSOP-20(PWP) and click Select.The Select a Footprint window displays a list of footprints as shown in the following figure.įigure 3. Selecting the HTSSOP-20(PWP) footprint. Note: To learn how to create a custom footprint in NI Ultiboard take a look at the Creating a Custom Component in NI Ultiboard tutorial. Now you need to define the number of sections and pins in the component. In this case there are two sections: A is the pre-amplifier section, it contains 7 pins and B is the programmable gain amplifier section, it contains 12 pins. Configure the multi-section parameters as shown in Figures 4a and 4b.