在multisim中新建LM386

The LM386 is a low voltage audio power amplifier integrated circuit (IC). To be able to simulate the component in Multisim and use it in Ultiboard PCB designs, it needs to be created using the Component Wizard in Multisim. Files needed:

Symbol file (LM386.sym)

and SPICE model (LM386.cir).

Start Multisim. Under "Tools", choose "Component Wizard".

Step 1: Enter component information.

Step 2: Enter footprint information.

Click on "Select a footprint".

如何在multism中新建LM386器件multism中是没有LM386器件的，下面手把手教大家在multism中新建LM386.

此方法由本人在university of colorado boulder（科罗拉多大学波德分校）的ECEE学院网站上找到。虽然全英文，但比较简单，懒得翻译了。

---oldsun

=>原文地址：/~mathys/ecen1400/Software/CreateLM386.html

注意：新建LM386有两个必需文件：LM386.sym和LM386.cir。点击pdf中的超链接在浏览器中打开，然后选择“网页另存为”两个文件，然后重命名为LM86.sym和LM386.cir即可。下面提供备用下载地址：链接: /s/1dDq7qPN 密码: cktc

There are some 5000 footprints in the Master Database. To find the one that we need more easily, click on "Filter". Click on "Add row" and select "Footprint" from the drop down menu under "Column". Set the "Operator" to "Contains" and enter "DIP8" under "Value" as shown below.

Select the "Ultiboard DIP8" footprint.

Click on "Select". In the footprint information window set the number of pins to 8.

Step 3: Enter symbol information.

Click on "Edit" to open the Symbol Editor.

open the LM386.sym file.

Do not change any of the pin information that appears at the bottom of the symbol editor. Click on "Exit" and answer "Yes" to the "Save changes?" question. Now the symbol information window should look like this:

Step 4: Set pin parameters. Click on "Next" and change the pin Types for the different pins (from "BIDIRECTIONAL") to the values shown below.

Step 5: Set mapping information between symbol and layout footprint. Click "Next" and fill in the footprint pins in as shown next.

Step 6: Select simulation model. Click "Next" to obtain the "Select simulation model" window.

Download the file LM386.cir

and remember the location where you put it. Then click on "Load from file" and open the LM386.cir file. You should see a window with the LM386 SPICE model filled in as shown below.

Step 7: Mapping information between symbol and simulation model. Click "Next" and fill in the Model nodes in the Pin mapping table as follows. (Note: The model nodes are numbered 1,2,3,... from left to right in the .SUBCKT specification, irrespective of the pin numbers in the footprint mapping.)

Step 8: Save component to database. Click "Next" and in the next window click on "User Database" and select "Analog".

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