Verification of Characteristics of Diode using Cadence Virtuoso

 In this blog we will see how to perform Characteristics of Diode on Cadence Virtuoso,

1. Forward Bias

2. Reverse Bias

Steps:

1. Create instance by selecting “create instance” command or by pressing “I” on keyboard.

2. For diode, lib -> gpdk180, cell -> ndio, select “symbol” -> close -> hide

3. For resistance, lib -> analogLib, cell -> res, select “symbol” -> close -> hide

4. For ground, lib -> analogLib, cell -> gnd, select “symbol” -> close -> hide

5. For dc voltage, lib -> analogLib, cell -> vdc, select “symbol” -> close -> hide

6. Change properties of component by pressing key “q” after selecting that component.

7. Dc voltage = Vd, i.e. Vdc=Vd

8. check and save or “ctrl+S”

9. launch -> ADE L {Analog Design Environment Launch}

10. setup -> modal libraries -> select correct path of your schematic if not selected.

11.  Design variables -> Vd -> 1

12. Analyses -> choose

 

Here set values according to condition that whether it is forward bias or reverse bias. Above example is for reverse bias.

For forward bias start->0 and stop->+1.8

Step size-> 0.1 or no. of steps as 20

 

13. Variables -> copy from cellview

14. Output -> plotted from cellview ->select from schematic -> select a terminal point of diode where you want to find a V-I characteristics.

15. Click on Netlist and Run.

Thanks....