Build a Shunt-peaking Amplifier Schematic

Authors: Jihoon Jeong, Justin Cartwright, Dr. Dong S. Ha

This section will lead you to build a shunt-peaking amplifier in tsmc 0.18 μm technology with Cadence tools. If you don't know how to create a library and cell views, please review this website tutorial first.
http://www.cesca.centers.vt.edu/tutorial/tutorialCadence_rfic_schem_sim_1.php
I named a "SPAmp" for a new cell view in a tutorial library which I created for the previous tutorial.

1. Hit 'i' key to add instances on Schematic Editing window. I'm going to add NMOSFET from tsmc18rf library. Select tsmc18rf library from top-down list in a Library Browser window, and click Mosfets to add nmos2v. Add Instance window will be appeared if you click nmos2v from Component Brower window. (Fig. 1)

2. Before you place nmos2v on the Schematic Editing window, replace a value of "w" to the minimum of 220 n and "Number of fingers" of n_finger. You will be able to change transistor's size easily when you run simulations in ADE later. (Fig. 1)

Figure 1. Add Instances on Schematic Editing Window

3. Let's add a resistor, inductor, and capacitor from AnalogLIb library as the same manner. (you can add passive components from tsmc18rf technology now, however I recommend one uses ideal passive components.) Replace its values to R, L, and C respectively. Place those instances properly on the Schematic Editing window. (Fig. 2)

Figure 2. Add passive components: R, L, and C

4. In order to run an AC analysis, we will have to add an AC input source. The sinusoidal input voltage source can be found in analogLib->Sources->Independent->vsin. Refer to the variables in Fig. 3 and place the voltage source as an input of the amplifier. (Fig. 3)

Figure 3. Add a sinusoidal voltage source

5. To provide a supply voltage, add a DC voltage source which you can find in analogLib->Sources->Independent->vdc. (Fig. 4) The ground instance is available in analogLib->Sources->Globals->gnd.

Figure 4. Insert a DC supply voltage and Ground

6. Connect each component by hitting 'w' and save your schematic. (Fig. 5)

Figure 5. Wiring and Save

7. Let's make labels on nets of interest. Click the "Wire Name" from the left toolbar and Add Wire Name window. will appear. Name it and click the net which you are interested. (Fig. 6)

Figure 6. Label nets interested

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