Lab 4 - ECE 421L 

Authored by Preston Donovan,

donovp1@unlv.nevada.edu

September 27, 2017

  

Prelab:
Complete Tutorial 2
Backup all work

 
Postlab:
1. A schematic for simulating ID v. VDS of an NMOS device for VGS varying from 0 to 5 V in 1 V steps while VDS varies from 0 to 5 V in 1 mV steps. Use a 6u/600n width-to-length ratio.

pictures/cir1.PNG

I used parametric analysis for VGS with linear steps of 1 from 0 to 5.

pictures/run1.PNG

And got this as an output.

pictures/out1.PNG

 

2. A schematic for simulating ID v. VGS of an NMOS device for VDS = 100 mV where VGS varies from 0 to 2 V in 1 mV steps. Again use a 6u/600n width-to-length ratio. 

pictures/cir2.PNG
pictures/run2.PNG
And got this as an output.
pictures/out2.PNG
 
3. A schematic for simulating ID v. VSD (note VSD not VDS) of a PMOS device for VSG (not VGS) varying from 0 to 5 V in 1 V steps while VSD varies from 0 to 5 V in 1 mV steps. Use a 12u/600n width-to-length ratio.
 pictures/cir3.PNG
I used parametric analysis for VSG with linear steps of 1 from 0 to 5.
pictures/run3.PNG
And got this as an output.
pictures/out3.PNG
 
4. A schematic for simulating ID v. VSG of a PMOS device for VSD = 100 mV where VSG varies from 0 to 2 V in 1 mV steps. Again, use a 12u/600n width-to-length ratio.
pictures/cir4.PNG
pictures/run4.PNG
And got this as an output.
pictures/out4.PNG

Lay out a 6u/0.6u NMOS device and connect all 4 MOSFET terminals to probe pads.
pictures/nmoswl.PNG
Worked my way up to metal 3.
pictures/nmos.PNG
And connected it to the pads.
pictures/nmospad.PNG
pictures/DCMnmos.PNG
Then I used LVS with this schematic:
pictures/nmosschematic.PNG
pictures/lvsnmos.PNG
My LVS and DRC passes! 
 
Lay out a 12u/0.6u PMOS device and connect all 4 MOSFET terminals to probe pads.
pictures/pmoswl.PNG
Worked my way up to metal 3.
pictures/pmos.PNG
And connected it to the pads.
pictures/pmospad.PNG
pictures/DCMpmos.PNG
Then I used LVS with this schematic:
pictures/pmosschematic.PNG
pictures/lvspmos.PNGMy LVS and DRC passes!

 

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