Lab 3 - EE 421L 

Brandon Thomas (email:thomasb3@unlv.nevada.edu)

Goal: The goal of this lab was to turn the 10-bit DAC from last weeks lab into a layout format using the n-well resistors created in Tutorial 1.

Procedures: The first thing we had to do was create the single 10k n-well resistor which was already created in Tutorial 1.  From here we had to use the resistor to create a 1-bit DAC be hooking up multiple resistors in the correct way, using metal 1 as the connection from one to the other.  The 1-bit DAC was then used as a building block in the construction of the 10-bit, which was then extracted and simulated to see if the results came out to be the same as the schematic 10-bit DAC from last week's lab.

The 1-bit DAC was constructed using the 10k n-well resistor in the following manner:

After the construction of the 1-bit DAC, the 10-bit was created by laying out 10of the 1-bits which were each connected in the appropriate way by metal1, which produced the following layout:

The following simulations were obtained:

After completing the lab, I backed up my work by zipping the file where everything for lab 3 was located and emailed the zipped folder to myself.