Index Catalog // ScholarsArchive@OSU

Noise optimization for low-voltage CMOS audio preamplifier systems

Creator:: Brown, Matthew Eugene
Abstract:: There is a large and growing market for portable consumer audio products with very small size. As the size of these products is reduced, the area occupied by batteries becomes significant and hence limits the number of batteries to one. In order to build such small products, high levels of...
Resource Type:: Masters Thesis

Low-voltage data converters

Creator:: Meng, Qingdong
Abstract:: With the growing demand for portable/consumer electronics, such as digital audio/video (AV), the downscaling of device dimensions, which enables the integration of an increasing number of transistors in a single chip, is mandatory. This trend also continuously pushes the power supply voltage down to reduce the power consumption and improve...
Resource Type:: Dissertation

High efficiency delta-sigma modulation data converters

Creator:: Lee, Kyehyung
Abstract:: Enabled by continued device scaling in CMOS technology, more and more functions that were previously realized in separate chips are getting integrated on a single chip nowadays. Integration on silicon has opened the door to new portable wireless applications, and initiated a widespread use of these devices in our common...
Resource Type:: Dissertation

Generalized radix design techniques for low-power, low voltage pipelined and cyclic analog-digital converters

Creator:: Sharma, Vivek
Abstract:: This thesis proposes a novel technique for the design of pipelined and cyclic ADCs utilizing generalized radix gain stages. Several models have been proposed for the optimization of high performance pipelined ADCs by various researchers. This work builds upon them, using a simple but accurate model to estimate the optimal...
Resource Type:: Masters Thesis

Low-power high-resolution delta-sigma ADC design techniques

Creator:: Wang, Tao
Abstract:: This dissertation presents a low-power high-resolution delta-sigma ADC. Two new architectural design techniques are proposed to reduce the power dissipation of the ADC. Compared to the conventional active adder, the direct charge transfer (DCT) adder greatly saves power by keeping the feedback factor of the active adder unity. However, the...
Resource Type:: Dissertation

High-performance delta-sigma analog-to-digital converters

Creator:: da Silva, Jose Barreiro
Abstract:: Multi-stage delta-sigma (ΔΣ) architectures, commonly known as MASH, are the preferred choice for analog-to-digital converters (ADCs) used in broadband communication applications, where high-resolution (above 14 bits) and high-bandwidth (several MHz) performances are required. Current state-of-the-art designs are capable of as much as 5-MS/s output data rates with 90-dB SNR. However,...
Resource Type:: Dissertation

A study of basic building blocks of analog-to-digital delta-sigma modulators

Creator:: Guo, Yuhua
Abstract:: In this thesis, a novel Direct-Charge-Transfer (DCT) integrator structure is proposed, which can settle much faster than regular switch-capacitor integrators. A new Spread-Spectrum Dynamic Element Matching (SS-DEM) algorithm is also introduced, which can effectively spread or shape the nonlinearity error of multi-bit DAC in the feedback path, thus improve the...
Resource Type:: Masters Thesis

A fully digital technique for the estimation and correction of the DAC error in multi-bit delta sigma ADCs

Creator:: Wang, Xuesheng
Abstract:: This thesis proposes a novel fully digital technique for the estimation and correction of the DAC error in multi-bit delta sigma ADCs. The structure of the DAC error is indicated through a simple model for unit-element based DACs. The impact of the DAC error on the performance of ADC is...
Resource Type:: Dissertation

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

Power Efficient Architectures for Medium-high Resolution Analog-to-Digital Converters

Creator:: Sadollahi, Mahmoud
Abstract:: Analog-to-digital converters are essential components to the portable devices that we are using today. Wireless sensors, body implanted devices, communication devices and so forth require low power ADCs. Therefore achieving higher resolution and bandwidth with lower power consumption is targeted in ADCs design. In this work power efficient ADCs for...
Resource Type:: Dissertation

Power Efficient Architectures for Low Noise Switched-Capacitor Filters and High Accuracy Analog-to-Digital Converters

Creator:: Payandehnia, Pedram
Abstract:: Filters and data converters are key analog-and-mixed-signal (AMS) building blocks in communication systems, such as software-deﬁned radios and internet-of-things. In this dissertation, novel switched-capacitor ﬁlter and analog-to-digital converter (ADC) circuit conﬁgurations have been explored which are power eﬃcient and are digital scaling friendly. First, a novel switched-capacitor low-pass ﬁlter architecture...
Resource Type:: Dissertation

ScholarsArchive@OSU

Noise optimization for low-voltage CMOS audio preamplifier systems

Low-voltage data converters

High efficiency delta-sigma modulation data converters

Generalized radix design techniques for low-power, low voltage pipelined and cyclic analog-digital converters

Low-power high-resolution delta-sigma ADC design techniques

High-performance delta-sigma analog-to-digital converters

A study of basic building blocks of analog-to-digital delta-sigma modulators

A fully digital technique for the estimation and correction of the DAC error in multi-bit delta sigma ADCs

Linearity enhancement techniques for data converters

Power Efficient Architectures for Medium-high Resolution Analog-to-Digital Converters

Power Efficient Architectures for Low Noise Switched-Capacitor Filters and High Accuracy Analog-to-Digital Converters

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