Transcription of 8. MOS Transistors, CMOS Logic Circuits
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8. MOS Transistors, CMOS Logic Circuits
M. Horowitz, J. Plummer, R. Howe1E40 MMOS Transistors, CMOS Logic Circuits ,and Cheap, Powerful ComputersM. Horowitz, J. Plummer, R. Howe2 Reading Chapter 4 in the reader For more details look at A& Signals (goes in much more detail than we need) A& DevicesM. Horowitz, J. Plummer, R. Howe3 MOSFET MOS Transistor Are very interesting devices Come in two flavors pMOSand nMOS Symbols and equivalent Circuits shown below Gate terminal takes no current (at least no DC current) The gate voltage*controls whether the switch is ON or OFFpMOSnMOSR ongategate* actually, the gate to source voltage, VGSM. Horowitz, J. Plummer, R. Howe4nMOSi-V Characteristics nMOSis still a device Defined by its relationship between current and voltage But it has 3 terminals!
DS i DS G D v S i Remember the resistor? M. Horowitz, J. Plummer, R. Howe 5 SimpleModel of an nMOSDevice • We will model an nMOSdevice by components we know –Resistor ... • Thes e s i mul at i on t ool s ar e mor e s ophi s t i c at ed i n s ome t ec hnol ogy ar eas t han i n ot her s , but i n al l ar eas t hey have made t r emendous pr ...
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