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2 cards from this section. Quick, good the night before a test.
What parameters affect the drain-source current in a MOSFET?
Consider the MOSFET structure.
What happens to I_DS when W increases?
Think about the relationship between width and resistance.
What is the drain-source current of a MOSFET dependent on?
Think about what it takes to create a conductive channel.
True or False: In the saturation region, I_DS is influenced strongly by V_DS.
Consider how current stabilizes in saturation.
You have a MOSFET with W = 20 μm, L = 2 μm, V_GS = 4V, V_th = 1V, and V_DS = 3V. Calculate I_DS and detail each step.
Remember the current equation. Identify how each parameter plays into the result.
Explain what changes would occur if the MOSFET's V_th increases due to fewer doping concentrations in the substrate.
Think about how channel formation is impacted by doping levels.
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