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Filtering by: Creator Johnson, K. B. Remove constraint Creator: Johnson, K. B. Degree Field Electrical and Computer Engineering Remove constraint Degree Field: Electrical and Computer Engineering Subject Analog-to-digital converters -- Design and construction Remove constraint Subject: Analog-to-digital converters -- Design and construction

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  • 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
    Full Text:
    5.4 (a) Pole locus with k at m = 2.5. (b) Pole locus with m at k = 0.5 for modulator in Fig. 5.3

  • A wideband low-power continuous-time delta-sigma modulator for next generation wireless applications

    Creator:
    Chen, Xuefeng
    Abstract:
    Delta-Sigma (ΔΣ) analog-to-digital converters (ADCs) are widely used in wireless transceivers. Recently, continuous-time (CT) ΔΣ ADCs gain growing interest in wireless applications for their lower power consumption and wider input bandwidth as compared with the discrete-time (DT) counterparts. In this thesis, a wideband low-power CT ΔΣ modulator for next generation...
    Resource Type:
    Dissertation
    Full Text:
    ……………………………………………………………….5 2.2 (a) Transfer curve and (b) error function of a 4-level quantizer……………………………6 2.3

  • Design of a 1.8-V 14-bit [delta] - [sigma] A/D converter with 8X oversampling and 4 MHz Nyquist output rate

    Creator:
    Jiang, Ruoxin
    Abstract:
    In this dissertation, a new Δ∑ A/D converter is presented that is ideally suited for communication applications. It is based on a single-loop single-stage structure, which can realize a high maximum out-of-band quantization noise gain while maintaining stable operation and thus achieve 14-bit resolution at 8 times oversampling. A fifth-order...
    Resource Type:
    Dissertation
    Full Text:
    K. Plant, Dr. Karti Mayaram, Dr. Un-Ku Moon, Dr. Gabor C. Temes, and Dr. John T. Stonick for

  • 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

  • Automated synthesis of analog to digital conversion

    Creator:
    Weaver, Skyler
    Abstract:
    This thesis describes circuit architectures and techniques that facilitate the automatic synthesis and fabrication of analog-to-digital converters (ADCs). Since automated synthesis already exists for digital circuits and is part of the digital circuit design flow, this work demonstrates the feasibility of ADC synthesis with little or no modification to presently...
    Resource Type:
    Dissertation
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.6 a) An analog comparator made from standard digital NAND3 cells. b) A analog voltage

  • Architecture design of multiplexed incremental analog-to-digital converters

    Creator:
    Zhang, Zhiqing
    Abstract:
    Analog-to-Digital Data Converters (ADCs) used in instrumentation and measurements often require high absolute accuracy, including excellent linearity and negligible dc offset. Incremental data converters (IDCs) provide a solution for such measurement applications. Since IDCs are essentially delta-sigma converters with reset operation before each conversion, they retain most of the advantages...
    Resource Type:
    Masters Thesis
    Full Text:
    ) = b(Vin[0] + Vin[1] − d0Vref − d1Vref) … )][()( 1 0 1 ∑ − = −= N k refkini VdkVbNV

  • Design techniques for low power ADCs

    Creator:
    Yu, Wenhuan
    Abstract:
    This dissertation presents an incremental analog-to-digital converter (ADC) with digital digital-to-analog converter (DAC) mismatch correction. A theoretical time-domain analysis technique was developed to predict the noise performance of the incremental ADC, and a new optimization technique was proposed to minimize the output noise. In the calibration mode, the incremental ADC...
    Resource Type:
    Dissertation
    Full Text:
    . 9 d(k) v3[k] U z-1 1-z-1 z-1 1-z-1 z-1 1-z-1 c1 c2 a1 a2 a3b b Q DAC Q(z) 1/(1-z

  • Design of a 80/250-Msample/s FIR-filter for a pipelined ADC-FIR interface

    Creator:
    Stier, Hubert J.
    Resource Type:
    Masters Thesis
    Full Text:
    through a setup stage. During the device setup, the FIR-filter reads k multiplication factors b, required

  • Power Efficient Architectures for High Accuracy Analog-to-Digital Converters

    Creator:
    Zhang, Yi
    Abstract:
    Incremental ADCs (IADCs) have found wide applications in sensor interface circuitry since, compared to ∆Σ ADCs, they provide low-latency high-accuracy conversion and easy multiplexing among multiple channels. On the other hand, continuous-time ∆Σ ADCs (CTDSM) have been receiving more and more attention as a power-efficient solution in targeting medium to...
    Resource Type:
    Dissertation
    Full Text:
    Page 2.1 Block diagram of (a) a conceptual incremental ADC. (b) a first-order incremental ADC

  • Architectural Solutions for Analog Imperfections in ΔΣ Analog-to-Digital Based Systems

    Creator:
    Zali Asl, Samira
    Abstract:
    For today’s ubiquitous portable devices, innovative integrated circuits with high performance yet very low power are necessary. As these devices are used to communicate and sense real world signals in the environment, analog-to-digital converters (ADC) and systems are the key interface circuits needed to digitize the sensed information and they...
    Resource Type:
    Dissertation
    Full Text:
    : (a) The VCO-based ADC. (b) The VCO-based ADC in the back-end of ΔΣ modulator