Introduction to Field-Effect Transistors (FETs) and Amplifiers
Abstract
We next take a detour from the world of bipolar transistors and enter the world of field-effect transistors. The basic signal metal oxide–semiconductor (MOS) structure is discussed, followed by a discussion of metal oxide–semiconductor field-effect transistor amplifiers. The incremental model of the MOS transistor is shown, and it is used in a design example where gain and bandwidth are calculated for an MOS amplifier. We then finish with the junction field-effect transistor (JFET) and several examples of JFET amplifiers.
Keywords
Field-effect; JFET; MOSFET; drain current; saturation; Ohmic region; source; follower; common-source amplifier; common-gate amplifier; ...
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