Search Constraints

Start Over
Filtering by: Creator Lee, Hyoung S. Remove constraint Creator: Lee, Hyoung S. Advisor Moon, Un Ku Remove constraint Advisor: Moon, Un Ku

Search Results

  • Power-efficient two-step pipelined analog-to-digital conversion

    Creator:
    Lee, Ho-Young
    Abstract:
    Hand-held devices are among the most successful consumer electronics in modern society. Behind these successful devices, lies a key analog design technique that involves high-performance analog-to-digital conversion combined with very low power consumption. This dissertation presents two different approaches to achieving high power efficiency from a two-step pipelined architecture, which...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Ho-Young Lee for the degree of Doctor of Philosophy in

  • Single-Ended Techniques for Delta-Sigma Modulators

    Creator:
    Lee, Calvin Y.
    Abstract:
    This work presents a high-resolution Delta-Sigma ADC which combines the use of the pseudo-pseudo-differential noise filtering technique with single-ended ring amplifier based integrators. The pseudo-pseudo-differential noise filtering technique utilizes single-ended circuits while maintaining the even-order rejection found in fully-differential structures which alleviates, in the active analog blocks, the need for...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Calvin Yoji Lee for the

  • Active Noise Shaping Analog-to-Digital Data Converters

    Creator:
    Shi, Lukang
    Abstract:
    Successive-approximation-register (SAR) analog-to-digital converters are popular for medium accuracy, medium speed and low power applications, such as in biomedical applications. They have low latency and simple architecture compared with ΔΣ ADCs. This is because of SAR ADCs’ binary searching scheme. Furthermore, SAR ADCs can apply oversampling and noise shaping schemes...
    Resource Type:
    Dissertation
    Full Text:
    Anand and Professor Yun-Shik Lee to be the committees of all my PhD exams. Their valuable comments

  • Automated analysis, design, and optimization of low noise oscillators

    Creator:
    Vytyaz, Igor
    Abstract:
    Low noise oscillators are universally needed in digital systems for clock generation and synchronization, and in radio-frequency communication front-ends for frequency up- and down-conversion. Noise in oscillators results in timing jitter, and limits the clock frequency of digital systems. In radio-frequency communication systems, phase noise in oscillators lowers the signal-to-noise...
    Resource Type:
    Dissertation
    Full Text:
    with David C. Lee on challenging projects at Berkeley Design Automa- tion proved to be a wonderful

  • A 1V 40mA Fast Transient Capless LDO with 7uA Quiescent Current in 180nm CMOS using Ring Amplifier with Adaptive Damping

    Creator:
    Xiao, Bohui
    Abstract:
    Ring amplification has emerged as an efficient technique to drive large capacitive loads in switched capacitor circuits. We propose circuit techniques to demonstrate the first application of a ring amplifier in a non-capacitive feedback system of a LDO. These techniques enable a simple cap-less LDO structure in 180nm CMOS that...
    Resource Type:
    Masters Thesis
    Full Text:
    Sun, Yang Xu, Ahmed El-Shater, Calvin Lee, Michael Oatman, and Hang Hu. I wish them the best in 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
    Full Text:
    range and saves power by removing the dedicated, front-end S/H. Prototype performance demonstrates

  • Ring Amplifier Optimized for High Resolution Analog-to-Digital Converter Applications

    Creator:
    ElShater, Ahmed O.
    Abstract:
    In recent years, SAR ADCs have been shown to acheive faster conversion times and improved power efficiencies due to their simple building blocks that are digital in nature and scale favorably with technology. High resolution ADCs with stringent noise requirement has led to the adoption of hybrid ADC architectures such...
    Resource Type:
    Dissertation
    Full Text:
    implemented in 0.18µm technology achieves a DR of 95dB and a Schreier FOM better than 180dB at both 2MS/s and

  • Design techniques for low-voltage and low-power analog-to-digital converters

    Creator:
    Ahn, Gil Cho
    Abstract:
    With the ever-increasing demand for portable devices used in applications such as wireless communication, mobile computing, consumer electronics, etc., the scaling of the CMOS process to deep submicron dimensions becomes more important to achieve low-cost, low-power and high-performance digital systems. However, this downscaling also requires similar shrinking of the supply...
    Resource Type:
    Dissertation
    Full Text:
    delta-sigma ADC, a 0.9 V, 10-bit, 20MS/s CMOS pipelined ADC and a 2.4 V, 12-bit, 10MS/s CMOS pipelined

  • Low-power design techniques for low-voltage analog-to-digital converters

    Creator:
    Kim, Min Gyu
    Abstract:
    The demand for portable electronic systems and the continued down-scaling of device dimensions resulted in rapid improvement in the performance of integrated systems. Several low-voltage design techniques have been proposed to operate analog circuits with sub-1V supply. However, these techniques require higher power consumption to achieve large dynamic range while...
    Resource Type:
    Dissertation
    Full Text:
    -loop. A 0.9V 92dB delta-sigma audio ADC and a 10MS/s 11-b algorithmic ADC were implemented to

  • Energy and area efficient techniques for data converters

    Creator:
    Venkatram, Hariprasath
    Abstract:
    Data converters are ubiquitous building blocks of a signal chain. The rapid increase in communication and connectivity devices presents new avenues for pushing the state of the art analog to digital converters. Techniques for improving resolution, bandwidth, linearity and bit-error rate, while reducing the power, energy and area is the...
    Resource Type:
    Dissertation
    Full Text:
    at 20 MS/s. Built in 1P4M 0.18 µm technology and operating at 1.3 V sup- ply, the ADC consumes 5.9