PMOS Common Source Simulation in SPICE
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This exercise involves repeating the simulation programs from Lesson 1 with a focus on a PMOS common source circuit. The goal is to analyze the PMOS I-V characteristics using the provided SPICE syntax, including defining parameters, setting voltage sources, and sweeping gate voltage values. Users will write a SPICE simulation to produce the desired output curves, similar to how NMOS circuits are analyzed. Understanding PMOS behavior and using simulation software effectively is critical for circuit design and analysis.
PMOS Common Source Simulation in SPICE
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Presentation Transcript
1. Repeat the simulation programs of Lesson 1. • 2. Perform the same simulation programs of Lesson 1, except the circuit is a PMOS common source ckt. An example is given below.
PMOS I-V Curve .protect .lib 'c:\mm0355v.l' TT .unprotect .op .options nomod post VDD 1 0 3.3v R1 3 0 5k Rsd 1 1_1 0k V3 3 0 0v .param W2=5u M1 3 2 1_1 1_1 +pch L=0.35u W='W2' m=1 +AD='0.95u*W2' PD='2*(0.95u+W2)' +AS='0.95u*W2' PS='2*(0.95u+W2)' VG 2 0 0v .DC V3 0 3.3v 0.1v SWEEP VG 0.1v 3v 0.25v .PROBE I(R1) I(Rsd) .end
3. Write a SPICE simulation program to obtain the following curves. An example as follows NMOS