vlsi design 4 min read
FPGA Building Block Architectures
Not so long ago, most software was permanently shipped along with their respective hardware, and there was no way to…
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vlsi design 4 min read
Design as a tradeoff
Tradeoffs in product design. A product is a system that consists of many parts. Once launched, each of the parts…
vlsi design 2 min read
ALU
TABLE OF CONTENTS Introduction An arithmetic logic unit (ALU) is a digital circuit used to perform arithmetic and logic operations.…
vlsi design 5 min read
Synchronous Design
Description The designers of digital integrated circuits (IC) are very concerned about the correctness of their designs because, unlike software,…
vlsi design 7 min read
Astable Sequential Circuits
Regenerative switching circuits such as Astable Multivibrators are the most commonly used type of relaxation oscillator because not only are they simple,…
vlsi design 3 min read
Schmitt Trigger
Overview The Schmitt Trigger is a logic input type that provides hysteresis or two different threshold voltage levels for rising…
vlsi design 1 min read
Circuit Pitfalls
Outline • Circuit Pitfalls – Detective puzzle – Given circuit and symptom, diagnose cause and recommend solution – All these…
vlsi design 2 min read
Domino Logic
Tinkering with Logic Gates Things to like about CMOS gates: easy to translate logic to fets rail-to-rail switching good noise…
vlsi design 2 min read
Transmission Gates
Introduction A Transmission Gate (T-gate or TG or pass gate) is a bi-directional switch made up of an NMOS and PMOS…
vlsi design 2 min read
Pass-Transistor Logic
• N transistors • No static consumption Primary inputs drive the gate terminals + source-drain terminals. In contrast to static…
vlsi design 4 min read
Dynamic Circuits
Introduction to Dynamic Gates Static logic is great for its robustness. However, it is too slow to meet requirements for…
vlsi design 1 min read
Ratioed Logic Circuit
Ratioed MOS circuits have been known for many years, and were used widely in the past despite their high power…
