ENGR337 Lab 2020 Spring
Project: Final Chip Layout
          (Tutorial 5 - Complete the Op Amp IC)
Name: Audra Benally
Email: albenally1@fortlewis.edu

1. Title: Complete the Op Amp IC

2. Introduction: In this final lab, we made a biasing circuit and a capacitor then laid them all together in the op amp layout. The inverter from Lab 8 as well as the newly created op amp were then integrated into the padframe from Lab 9. Finally, everybody celebrated because the chip was completed!

3. Materials and Methods:
       Materials:
          - Computer with ElectricVLSI
          - Computer Mouse

       Methods:
    First, the biasing circuit was made using 3 PMOS and 3 NMOS transistors. Vbias3, Vbias4. and Vbiasp were exported to pins in the schematic. Then the Op Amp was made using several PMOS and NMOS connected together. Smaller transistors were linked together to make the larger-sized transistors. Then the capacitor was made and connected to the appropriate wires in the Op Amp. The components were then hooked up to the padframe made in Lab 9. The schematic for the chip layout was finished as the last step.

4. Results:

   
             Figure 1. Biasing circuit layout.

   
             Figure 2. Capacitor layout with measured dimensions.

   
             Figure 3. Completed Op Amp layout with biasing circuit and capacitor.

   
             Figure 4. Final chip layout.

   
             Figure 5. Final chip schematic.

   
             Figure 6. Successful NCC and DRC checks on final chip layout.


5. Discussion:
    The final lab for this class was probably the longest and most intricate. The Op Amp was one of the homework assignments which helped a lot with the making of the layout of the circuit. Overall, the completion of the project was successful. The DRC and NCC checks came back clean and the chip is ready to go. At least as far at this class' expectations are concerned. I believe there still needs to be more n-Wells in the padframe to satisfy the well checks. The skills I've acquired in this tutorial series will be invaluable in my future career and I am forever thankful. I actually really enjoy using this software. I'm excited to use it more in the future. I think it is because I enjoy tedious work that requires perfection. I was a List Assistant in my last job where all I did was collect and sort data on excel spreadsheets and I enjoyed it. I'm lucky to be cut out for this type of work.