Unformatted text preview: I D = μC ox (W/L)[(V GS-V th )V DS- (1/2)V 2 DS ] where L is the effective channel length. A plot of this curve is what is known as the I-V characteristic of MOSFET. W/L is also known as "aspect ratio", V GS-Vth is the overdrive voltage. I D(max) =(1/2)μC ox (W/L)[(V GS-V th ) 2 ] If V DS <<2(V GS- V Th ), ** I D = μC ox (W/L)(V GS-V th )V DS Which is a linear function. R on = ) ( 1 th GS ox V V L W C-μ Under ** condition, MOSFET operates as a resistor whose value is controlled by the override voltage....
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This note was uploaded on 03/03/2010 for the course EE EE330 taught by Professor Maryam during the Spring '10 term at CSU Long Beach.
- Spring '10