Continuous-Time Delta-Sigma A/D Converters for High Speed Applications

Broadband Continuous-Time Sigma-Delta Analog-to-Digital Conversion Using MOSIS AMI 0.5 um CMOS Technology A Research/Educational Proposal

In the past two decades, sigma-delta ( Σ∆ ) analog-to-digital converters are well suited for and widely used in instrumentation, voice and audio applications, featuring low-frequency and high-resolution. The reason behind this is because high resolution of sigma-delta ( Σ∆ ) architecture is obtained through trading off speed of modern CMOS (or BiCMOS) technology for high accuracy. With the cont...

A Wideband High Dynamic Range Continuous-Time Sigma-Delta ADC for Wireless Applications

In recent years, the research toward the development of high speed and high resolution analog-to-digital converters (ADCs) has been equally driven by the demand of high-speed wire line and wireless communication services. Delta-Sigma ADCs are widely used in wireless applications due to their oversampling and noise shaping characteristics. This thesis aims to design a continuous-time sigma-delta...

Generalized sigma-derivation on Banach algebras

Let $mathcal{A}$ be a Banach algebra and $mathcal{M}$ be a Banach $mathcal{A}$-bimodule. We say that a linear mapping $delta:mathcal{A} rightarrow mathcal{M}$ is a generalized $sigma$-derivation whenever there exists a $sigma$-derivation $d:mathcal{A} rightarrow mathcal{M}$ such that $delta(ab) = delta(a)sigma(b) + sigma(a)d(b)$, for all $a,b in mathcal{A}$. Giving some facts concerning general...

Resonant-Tunneling Diode and its Application to Multi-GHz Analog-to-Digital Converters

Characteristic features of resonant-tunneling diode (RTD) and a goal of RTD-based IC technology are discussed. Our recent results on RTD-based analog-to-digital converters (ADCs) are then presented. These include designs of a 5-bit 10-GHz flash ADC and a bandpass continuous-time delta-sigma modulator with a center frequency of 500 MHz, which show high potential of RTD-based ultrahigh-speed circ...

Continuous-Time Sigma-Delta A/D Converters