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  • Analysis and design of oversampled digital-to-analog converters

    Creator:
    Xu, Xiaofeng
    Abstract:
    Oversampled data converters are becoming increasingly popular for high-precision data conversion. There have been many publications on oversampled analog-to-digital (A/D) converters but relatively few on oversampled digital-to-analog (D/A) converters. In this thesis, issues concerning the analysis and design of the oversampled D/A converters are addressed. Simulation tools and analytical methods...
    Resource Type:
    Masters Thesis
    Full Text:
    Oversampled Digital-to-Analog Converters CHAPTER 1 INTRODUCTION An analog-to-digital (A/D) data converter is

  • Oversampling digital-to-analog converters

    Creator:
    Shu, Shaofeng
    Abstract:
    Oversampling and noise-shaping methods for digital-to-analog (D/A) conversion have been widely accepted as methods of choice in high performance data conversion applications. In this thesis, the fundamentals of D/A conversion and oversampling D/A conversion were discussed, along with the detailed analysis and comparison of the reported state-of-the-art oversampling D/A converters....
    Resource Type:
    Dissertation
    Full Text:
    digital-to-analog conversion system shown in Figure 2.5 is called a Nyquist-rate D/A converter. The

  • Area efficient D/A converters for accurate DC operation

    Creator:
    Greenley, Brandon Royce
    Abstract:
    The design of mixed-signal integrated circuits has evolved from simple analog and digital circuits operating on the same silicon substrate to the point that now we have complete system on a chip solutions for communication systems. The levels of integration needed to remain cost effective in today's integrated circuit (IC)...
    Resource Type:
    Masters Thesis
    Full Text:
    loudspeaker or transmitted by an an- tenna requires a digital to analog converter (DAC). While DACs have been

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

    Creator:
    Chen, Chao-Yin
    Resource Type:
    Masters Thesis
    Full Text:
    Delta-Sigma Digital-to-Analog Converter Abstract approved: A delta-sigma digital-to-analog data

  • A DAC and comparator for a 100MHz decision feedback equalization loop

    Creator:
    Engelbrecht, Linda M.
    Abstract:
    Decision Feedback Equalization (DFE) in a data recovery channel filters the bit decision in the current symbol period in generating the sample at the comparator in the subsequent clock period. The operations of sampling, comparing, filtering the decision bits into a feedback signal, and subtraction of that feedback signal are...
    Resource Type:
    Masters Thesis
    Full Text:
    Specifications 9 2. BLOCK DESIGN 12 2.1 DIGITAL TO ANALOG CONVERTER (DAC) 12 2.1.1 DAC Core Design 13 2.1.1.1

  • Experimental verification of a mismatch-shaping DAC

    Creator:
    Hudson, William Forrest, 1971-
    Abstract:
    Delta-sigma data converters have gained popularity in both analog-to-digital and digital-to-analog converters (ADCs and DACs) due to their simplicity, high linearity and immunity to many analog circuit imperfections. These data converters include features such as oversampling, noise-shaping, and (historically) single-bit quantization. Single-bit converters are preferred for their inherent linearity. This...
    Resource Type:
    Masters Thesis
    Full Text:
    converters have gained popularity in both analog-to-digital and digital-to-analog converters (ADCs and DACs

  • Lowpass and bandpass current-mode delta-sigma DACs employing mismatch-shaping

    Creator:
    Shui, Tao, 1969-
    Abstract:
    Delta-sigma modulators are currently a very popular technique for making high-resolution analog-to-digital converters (ADCs) and digital-to-analog converters (DACs). These oversampled data converters have several advantages over conventional Nyquist-rate converters, including an insensitivity to many analog component imperfections, a simpler antialiasing filter and reduced accuracy requirements in the sample and hold....
    Resource Type:
    Dissertation
    Full Text:
    Conversion An analog-to-digital converter (ADC) (1 is a system that converts an analog quantity, such as

  • Multi-bit delta-sigma switched-capacitor DACs employing element-mismatch-shaping

    Creator:
    Lin, Haiqing
    Abstract:
    Delta-sigma modulators are currently a very popular technique for making high-resolution analog-to-digital and digital-to-analog converters (ADCs and DACs). Most delta-sigma modulators in production today employ single-bit quantization because a 1-bit DAC is inherently linear, whereas a multi-bit DAC is not. Were it not for this drawback, the use of multi-bit...
    Resource Type:
    Dissertation
    Full Text:
    modulation [1, 2], the noise caused by static element mismatch in a multi-level digital-to-analog converter

  • Delta-sigma modulators employing continuous-time circuits and mismatch-shaped DACs

    Creator:
    Zhang, Bo
    Abstract:
    Delta-sigma modulators are currently a very popular technique for making high-resolution analog-to-digital and digital-to-analog converters. These oversampled data converters have several advantages over conventional Nyquist-rate converters, including an insensitivity to many analog component imperfections, a simpler antialiasing filter and reduced accuracy requirements in the sample and hold. Though the initial...
    Resource Type:
    Dissertation
    Full Text:
    6n dB. In a conventional Nyquist rate ADC or DAC (digital-to-analog converter), higher resolution

  • Design of switched-current circuits for a bandpass delta-sigma modulator

    Creator:
    Manapragada, Praveen
    Resource Type:
    Masters Thesis
    Full Text:
    Copier RC3 37 4.2 Resonator with Reset 47 4.3 Digital-to-Analog Converter (DAC) 51 4.4 The Clock Circuit