Difference between revisions of "Tutorials:Cadence:SchematicSimulationTransient"

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= Schematic Simulation: Transient Analysis of The  Inverter =
 
= Schematic Simulation: Transient Analysis of The  Inverter =
  
Bring up the schematic of inv_test. We need to replace the dc voltage  input source with a pulse source. Click on the vdc source that is connected  to the input of the inverter. The vdc should have a yellow box around it.  Go to Editing:Edit → Delete or press the Del button.
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Bring up the schematic of inv_test. We need to replace the dc voltage  input source with a pulse source. Click on the vdc source that is connected  to the input of the inverter. The vdc should have a yellow box around it.  Go to '''Editing: Edit → Delete''' or press the '''Del''' button.
  
Left Click Add->Instance and select Cell Name: vpulse from Library Name: NCSU_Analog_Parts and View Name:symbol. Fill the rest of the boxes as shown  in the figure below. The input pulse that we have specified  is bounded between 0 and 5V. It has an initial delay of 1ns, rise and fall  time of 1ps and high/low duration of 2ns.
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Left Click '''Add → Instance''' and select Cell Name: vpulse from Library Name: NCSU_Analog_Parts and View Name:symbol. Fill the rest of the boxes as shown  in the figure below. The input pulse that we have specified  is bounded between 0 and 5V. It has an initial delay of 1ns, rise and fall  time of 1ps and high/low duration of 2ns.
  
 
: [[File:Tutorials-Cadence-Schematic_TestInv_Transient1.gif]]
 
: [[File:Tutorials-Cadence-Schematic_TestInv_Transient1.gif]]
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: [[File:Tutorials-Cadence-Schematic_TestInv_Transient7.gif]]
 
: [[File:Tutorials-Cadence-Schematic_TestInv_Transient7.gif]]
 
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<noinclude>
  
 
[[Tutorials:Cadence:SchematicSimulationDCAnalysis|Prev]] : [[Tutorials:Cadence:SchematicSimulationParametric|Next]] : [[Tutorials:Cadence:Main|Up]]
 
[[Tutorials:Cadence:SchematicSimulationDCAnalysis|Prev]] : [[Tutorials:Cadence:SchematicSimulationParametric|Next]] : [[Tutorials:Cadence:Main|Up]]
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{{Template:CadenceDisclaimer}}
 
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</noinclude>

Latest revision as of 18:54, 10 November 2010

Schematic Simulation: Transient Analysis of The Inverter

Bring up the schematic of inv_test. We need to replace the dc voltage input source with a pulse source. Click on the vdc source that is connected to the input of the inverter. The vdc should have a yellow box around it. Go to Editing: Edit → Delete or press the Del button.

Left Click Add → Instance and select Cell Name: vpulse from Library Name: NCSU_Analog_Parts and View Name:symbol. Fill the rest of the boxes as shown in the figure below. The input pulse that we have specified is bounded between 0 and 5V. It has an initial delay of 1ns, rise and fall time of 1ps and high/low duration of 2ns.

Tutorials-Cadence-Schematic TestInv Transient1.gif

Place this symbol such that the positive end is connected to the input of the inverter.

Tutorials-Cadence-Sch test inv1.gif

Save the schematic. Left Click Editing:File → Save. After we have made these changes we are ready to run a transient analysis on the inverter.

Left Click Editing:Launch → ADE L. In the Analog artist window go to Analysis → Choose... Set the transient analysis with Stop Time as 8n. We have specified a transient analysis from 0 to 300ns.

Tutorials-Cadence-Schematic TestInv Transient3.gif

Left Click Analog Artist: Outputs → To be Plotted → Select on Schematic. Select the input and output of the inverter. Refer to the previous section, DC analysis, for the necessary steps. The analogArtist window should look like the one below.

Tutorials-Cadence-Schematic TestInv Transient5.gif

Run the simulation by pressing on the green traffic light icon. After few seconds you should be able to see the results of the transient analyses like the ones below.

Tutorials-Cadence-Schematic TestInv Transient6.gif

Left click Axes → Strip in order to separate the different curves. The result should look like the one bellow:

Tutorials-Cadence-Schematic TestInv Transient7.gif


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