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2 cards from this section. Quick, good the night before a test.
What does I_DS represent in a MOSFET?
Think about what current flows through the device.
What is the role of V_th?
Consider it as the 'on' switch for the MOSFET.
What defines the saturation region in a MOSFET?
Think about the behavior of current in relation to V_DS.
True or False: Increasing V_DS always increases I_DS.
Consider the effects of saturation on current flow.
Given a MOSFET with W = 2um, L = 1um, V_th = 1V, V_GS = 5V, and V_DS = 2V, calculate I_DS assuming K=1mA/V^2. If L is reduced by 10%, how does I_DS change?
Calculate both before and after the change using the I_DS expression.
Analyze how increasing V_GS affects the transition point from triode to saturation for a given MOSFET with fixed V_DS.
Relate your findings to the expressions you've learned for I_DS.
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