Lab 03 - ECE 421L 

Authored by :: Aaron Escobedo

9/20/17

Prelab

We will first finish the tutorial 1 as described in the Prelab work;

Our orginal R_div circuit is shown first

Following that, we create a symbol for it in order to gain experience in this process. 

From here, we will attempt to create a layout of this design in the layout view, this is done by selecting the following options shown below. 

From here, we will create our initial N_well resistor, but importantly, we must ask how we decided to choose the size of this resistor. This was done by following a few parameters. The initial resistance of this type was mentioned to be 800 Ohms per square, thus we can calculate the following if we desire a 10k resistor.

Following the tutorial, it was suggested to create a 4.5 micron length, thus create a 56.1 width. since (4.5)(12) = 56.1

Here is our initial N_well resistor;

We will notice that there are markers on the edge, indicating an issue. The problem is that the edges are slightly off as shown here

Once this was remedied, we added our N taps to the resistor to create the following

By adding some pins to this, we can create something that looks like the following;

Now we are ready to add the metal layers, pins, and create another N_well to replicate our orginal circuit. 

If we extract the N_well's, we can find out how much resistance we have created, in our case, we created a 10.21k resistor