Index Catalog // ScholarsArchive@OSU

Architectural compensation techniques for analog inaccuracies in delta-sigma analog-to-digital converters, Architectural compensation techniques for analog inaccuracies in ΔΣanalog-to-digital converters

Creator:: Maghari, Nima
Abstract:: Delta-sigma analog-to-digital converters (ADCs) are suitable for many applications due to several advantages such as relaxed anti-aliasing filter, high signal-to noise and distortion ratio (SNDR) and most important of all, reduced sensitivity to analog imperfections.This thesis introduces several structures to overcome loop imperfections and stability issues in delta-sigma modulators. First,...
Resource Type:: Dissertation
Full Text:: and filtered quantization noise exceeds the linear range of the main quantizer

Current-feedthrough cancellation techniques in switched-current circuits

Creator:: Lao, Paul A.
Resource Type:: Masters Thesis
Full Text:: to process variations. The main purpose of this project was to study the current-feedthrough effects

Compensation techniques for cascaded delta-sigma A/D converters and high-performance switched-capacitor circuits

Creator:: Sun, Tao
Abstract:: This thesis describes compensation techniques for cascaded delta-sigma A/D converters (ADCs) and high-performance switched-capacitor (SC) circuits. Various correlated-double-sampling (CDS) techniques are presented to reduce the effects of the nonidealities, such as clock feedthrough, charge injection, opamp input-referred noise and offset, and finite opamp gain, in SC circuits. A CDS technique...
Resource Type:: Dissertation
Full Text:: integrator in a multiplexed structure. 27 3.12: Schematic of the main opamp and the attenuator. 28 3.13

Accuracy enhancement techniques in low-voltage high-speed pipelined ADC design

Creator:: Li, Jipeng
Abstract:: Pipelined analog to digital converters (ADCs) are very important building blocks in many electronic systems such as high quality video systems, high performance digital communication systems and high speed data acquisition systems. The rapid development of these applications is driving the design of pipeline ADCs towards higher speed, higher dynamic...
Resource Type:: Dissertation
Full Text:: when designing a pipelined ADC. The main requirements on opamp design are high gain, large bandwidth

High-linearity switched-capacitor circuits in digital CMOS technologies

Creator:: Yoshizawa, Hirokazu
Abstract:: In this thesis, novel design techniques have been proposed for implementing high-linearity SC circuits in a standard digital CMOS process. They use nonlinear MOSFET capacitors instead of linear double-poly capacitors. To reduce their nonlinearities, a bias voltage is applied to keep MOSFET capacitors in their accumulation regions. For further reduction...
Resource Type:: Dissertation
Full Text:: parasitic capacitance (about 15 % of the main capacitor) associated with its bottom plate because the

Low voltage techniques for pipelined analog-to-digital converters

Creator:: Carnes, Joshua Kenneth
Abstract:: To realize pipelined ADCs in deep-submicron processes, low voltage techniques must be developed to work around problems created by limited supply voltages such as the floating switch dead zone, reduced SNR, and reduced OpAmp performance. This thesis analyzes standard and low voltage design issues for pipelined ADCs and proposes a...
Resource Type:: Masters Thesis

Design techniques of high-performance switched capacitor circuits in the presence of component imperfections

Creator:: Huang, Yunteng
Abstract:: This thesis describes design techniques for high-performance switched-capacitor (SC) circuits, primarily for high-linearity low-noise SC circuits in the presence of component imperfections, such as nonlinear op-amp voltage transfer characteristics, capacitor nonlinearities as well as the finite op-amp dc gain and op-amp offset and noise. Various correlated-double-sampling (CDS) schemes are discussed,...
Resource Type:: Dissertation
Full Text:: often used as such elements, whose main function is to create a virtual ground. A virtual ground is a

Design of high efficiency step-down switched capacitor DC/DC converter

Creator:: Ma, Mengzhe
Abstract:: Recently, switched capacitor DC/DC converters are extensively used in portable electronic devices because they feature many advantages, such as high efficiency, small package, low quiescent current, minimal external components and low cost. In this thesis, two step-down switched capacitor DC/DC converters are designed. One has the fixed output options 1.5V,...
Resource Type:: Masters Thesis
Full Text:: two main kinds of topologies in DC/DC converters: inductive converters and switched capacitor

Linearity enhancement techniques for data converters

Creator:: Cao, Jinzhou
Abstract:: Data converters are essential interface circuits between the analog world that people live in and the digital processors that people live with. Linearity, which often is a tradeoff against other performance criteria, is one of the major performance demands from applications for both analog-to-digital converts (ADC) and digital-to-analog converters (DAC)....
Resource Type:: Dissertation
Full Text:: , signal amplitude cannot be increased freely beyond what the circuit can process. The main focus to

The design of a postfilter for a delta-sigma digital-to-analog converter

Creator:: Chen, Chao-Yin
Resource Type:: Masters Thesis
Full Text:: filters. The main sources of noise in an SC circuit are thermal noise, flicker (1/f) noise (both

ScholarsArchive@OSU

Architectural compensation techniques for analog inaccuracies in delta-sigma analog-to-digital converters, Architectural compensation techniques for analog inaccuracies in ΔΣanalog-to-digital converters

Current-feedthrough cancellation techniques in switched-current circuits

Compensation techniques for cascaded delta-sigma A/D converters and high-performance switched-capacitor circuits

Accuracy enhancement techniques in low-voltage high-speed pipelined ADC design

High-linearity switched-capacitor circuits in digital CMOS technologies

Low voltage techniques for pipelined analog-to-digital converters

Design techniques of high-performance switched capacitor circuits in the presence of component imperfections

Design of high efficiency step-down switched capacitor DC/DC converter

Linearity enhancement techniques for data converters

The design of a postfilter for a delta-sigma digital-to-analog converter

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