220-A3.1

Activity: MOSFET Characteristic Curves

• Instructions: This activity is structured as a tutorial with an activity at the end. Should you have any questions, clarifications, or issues, please contact your instructor as soon as possible.
• At the end of this activity, the student should be able to:

1. Generate the characteristic curves of NMOS and PMOS transistors.

NMOS Transfer Characteristics

Figure 1: A circuit to obtain the V-I characteristics of an NMOS transistor.

The transfer characteristics of an NMOS transistor is the relationship between the gate-source voltage, which serves as the "input" port of a common-source amplifier, and the "output" drain current. To simulate the transfer characteristic of our 45nm NMOS PTM model, we can use this SPICE file and this Python script.