Multisim中LM386芯片的构建步骤

1、Multisim中LM386芯片的构建步骤The LM386 is a low voltage audio power amplifier integrated circuit (IC) Tobe 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: Symbolfile (LM386 sym) and SPICE model (LM386

2、. cir).Start Multisim. Under Tools, choose Component WizardStep 1: Enter component information.Step 2: Enter footprint information.Click on Select a footprint.There are some 5000 footprints in the Master Database To find the one thatwe need more easily, click on FilterClick on Add row and select Foo

3、tprint fromthe drop down menu under Column Set the Operator to Contains and enter DIP8under Value as shown below.Select thez，Ultiboard DIPS footprint.Click on Select In the footprint information window set thenumber of pins to 8.$intddhStep 3: Enter symbol information.Component Wizard - Step 3 of 8E

4、nter symbol information1 EditCopyCODYto JV Bxk J | Ncp;t 7| CODT HelpClick on Edit to open the Symbol Editor.Symbol setAN5IODIDI1 Msi6rtMrtMSR 机 如协CMWIWICpjiyik*Cwy*ReWr饰 AF叶$intddhhY 应巾Ort-* UKM 3 YUK Fa Z 7LfttH豪Y UrH m业”的-*UrF常、-*Lfl-MSr机Cun杯M加Cay加SRECM枷皿如)x Z 【啊*曲ft atdM H$intddh：o并丫： 弧七彩込绅Do no

5、t change any of the pin information that appears of the symboleditor Click on Exit and answer Yes to the Save changes? question.Now the symbol information window should look like this：the bottomComponent Wizard Step3of 8冈Copy from DBf CopYto. |V Bxk J | Next 7| ConT HelpStep 4: Set pin parameters Cl

6、ick on ext and change the pinTypes for the different pins (from BIDIRECTIONAL) to the values shown belo w.Step 5: Set mapping information between symbol and layout footprint.Click Next and fill in the footprint pins in as shown next.Enter symbol informationI EditSymbol setAN5IODICJStep 6: Select Sim

7、ulation mode1. Click ext to obtain the Select simulationmodel window.Download the file LM386 cir and remember the location where you put it. Thenclick on Load from file and open the LM386 cir file You should see a windowwith the LM386 SPICE model filled in as shown below.Component Wizard Step6of 8冈Q

8、1gndinn10011ddpnrrlinn gnd 50k口2 gndinn10012ddpnpr2 inpgnd 50k*dif ferential input stage, gainsett ing*resistorzand intexna.1ieedback 3?esistor:5etect simdaton modelSelect from DBCopy to.Model name:LM386Load from fifeModel makerModel data;* CONNECTIONS: Goin 18Component Wizard Step7of 8冈Step 7: Mapp

9、ing information between symbol and simulation mode1.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 )Corucd Help |Component

10、 Wizard Step8of 8冈5et mDDiro inforrratbn betveei symbd and simulation mcdd (The s/rrbol must contan at feast as msy pins as themodel has connecticn points.) 亍 CarcEl | HelpStep 8: Save component to database Click Next and in the next window clickon User Database and select，zAnalog乐Component Wizard -

11、 Step 8 of BAenradjncherals“X Iw On: |Click on Add family and enter Amplifier for the family name.Pin mopping tcbb;Symbd pnsModel nodesVs6Gan1Gein88VOJt -IN52十IN3Grd4Bypass7二叵冈Faml/tree:Sojrce?User CdcbwcCMOSTTLi-iAnabo，w8版咄OodcsODITJFinally, click Finish and you are done with LM386 component creation. Checkthat you can sel