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MOS Transistor Theory
MOS Transistor Theory • Study conducting channel between source and drain • Modulated by voltage applied to the gate (voltage-controlled device) • nMOS transistor: majority carriers are electrons (greater mobility), p-substrate doped (positively doped) • pMOS transistor: majority carriers are holes (less
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MOS Transistors - Faculty
people.ee.duke.eduD Flip-flop Operation 40 Race Condition • Back-to-back flops can malfunction from clock skew – Second flip-flop fires late – Sees first flip-flop change and captures its result ... Chip Cells Polygons Transistors Gates Processor Boolean equations Differential equations
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people.ee.duke.edu– Transistors are leaky (I OFF „ 0) – Dynamic value will leak away over time – Formerly miliseconds, now nanoseconds! • Use keeper to hold dynamic node – Must be weak enough not to fight evaluation A f H 2 2 1 k X Y weak keeper. James Morizio 15 Charge Sharing (redistribution) Mp M e VDD Out A
ISSN 1751-8725 Wide angle impedance matching …
people.ee.duke.eduknown as metamaterials, in the wide angle impedance matching (WAIM) of waveguide-fed phased-array antennas. The authors propose that the anisotropic properties of a metamaterial layer, when designed
Boundary Scan Tutorial - All Faculty
people.ee.duke.eduBoundary Scan Tutorial 1 Boundary Scan Tutorial ... revised in 1993 and 1994, and most recently in 2001. You can obtain a copy of ... referred to as “1149.1a-1993,” contained many clarifications, corrections, and minor enhancements. Two new instructions were introduced in 1149.1a and these are described in this tutorial.
Fabrication and Manufacturing (Basics)
people.ee.duke.edu• Necessary so resist doesn’t melt in next step p substrate SiO 2. EE 261 James Morizio 17 n-well ... • Chemical Vapor Deposition (CVD) of silicon layer – Place wafer in furnace with Silane gas (SiH ... • Horizontal N-diffusion and p-diffusion strips • …
7. Baseband Digital Transmission
people.ee.duke.eduAdditionally, an ideal filter must have an impulse response that extends to infinite time before and after the pulse peak and, if the filter is to be causal (output response occurs after the input is applied), the peak output would occur an infinite time after the input. This would
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people.ee.duke.edulogistic regression models and proposed a gradient descent algorithm to solve the correspond-ing constrained problem. We present methods which allow us to work directly on the penalized problem and whose convergence property does not depend on …
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www.chu.berkeley.eduIt was the first mass produced transistor, ahead of the MOS field-effect transistor (MOSFET) by a decade. After the introduction of metal-oxide-semiconductor (MOS) ICs around 1968, the high-density and low-power advantages of the MOS technology steadily eroded the BJT’s early dominance. BJTs are still pref erred in some high-frequency and analog