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3 cards from this section. Quick, good the night before a test.
What is threshold voltage?
Think about the 'on' and 'off' states of the transistor.
In which region does the MOSFET operate when V_GS is below the threshold?
Consider the functionality of the transistor related to V_th.
What is the threshold voltage (V_th)?
Think about when the current flow starts.
In which operating region is the MOSFET when current is stable and not dependent on V_DS?
Recall the 'stable current' characteristic.
Design a circuit using an n-MOSFET. Given the threshold voltage is 1V, determine the range of V_GS needed to keep the MOSFET in saturation when V_DS = 5V.
Remember the conditions for saturation when calculating ranges.
For a p-MOSFET with a threshold voltage of -2V, if V_GS = -1V and V_SD = -3V, determine the operational region.
Examine the polarity differences in p-MOS configurations.
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