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Filtering by: Advisor Wrathall, David J. Remove constraint Advisor: Wrathall, David J. Academic Affiliation Electrical and Computer Engineering Remove constraint Academic Affiliation: Electrical and Computer Engineering

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  • Distortion analysis of switched-current circuits

    Creator:
    Lee, Wing-sun R.
    Abstract:
    Recently, switched-current circuits have received great attention because they offer potentially better performance in terms of speed, low voltage power supplies, and accuracy in mixed-mode analog-digital signal processing. In this thesis, the distortion characteristics, DC offset and AC gain errors induced by the threshold voltage, channel width, channel length, and...
    Resource Type:
    Masters Thesis
    Full Text:
    Approved: Redacted for Privacy / David J. Allstot Recently, switched-current circuits have received great

  • A CMOS differential line driver

    Creator:
    Jiang, William
    Abstract:
    A short-circuit-protected line-driver circuit is particularly adapted for use in a CMOS differential line-driver system, where one line-driver circuit provides a true output signal, and another line-driver circuit provides a complementary false output signal. A short-circuit is sensed by measuring current through a secondary pull-up transistor, and disabling a primary...
    Resource Type:
    Masters Thesis
    Full Text:
    Privacy David/ J. Allstot A short-circuit-protected line-driver circuit is particularly adapted for use

  • CMOS analog design using a digital gate array

    Creator:
    Liu, Tian-chen
    Abstract:
    The core area of a conventional CMOS digital gate array consists of only one size of NMOS device and one size of PMOS device. Both primitives have fixed minimum channel lengths, and this has significantly impeded analog applications. This work has shown that by forming series and parallel interconnections between...
    Resource Type:
    Masters Thesis
    Full Text:
    , 1988. Title: CMOS Analog Design Using A Digital Gate Array Redacted for Privacy Ddvid J. Allstot

  • Design of GaAs monolithically integrated optical receiver amplifier

    Creator:
    Ju, Shu-ing
    Resource Type:
    Masters Thesis
    Full Text:
    Receiver Amplifier. Abstract approved: Redacted for Privacy 7- David J. Allstot A GaAs optical receiver

  • Operational amplifier compensation using doublet-decompression for switched-capacitor circuits

    Creator:
    Jen, Shin D.
    Abstract:
    A frequency compensation technique for increasing the settling speed of two-stage operational amplifiers used in switched-capacitor applications has been developed. By properly decompressing the pole-zero doublet to form a three-pole one zero system, the settling speed is increased up to 50 percent as compared to the optimized two-pole system.
    Resource Type:
    Masters Thesis
    Full Text:
    approved: , Redacted for Privacy David J. Alistot A frequency compensation technique for increasing the

  • MOS switched-current biquadratic filters

    Creator:
    Lee, Bor
    Abstract:
    A MOS biquadratic (biquad) filter employing the switched-current technique is reported. The circuit uses current-mode processing which can offer wide bandwidth, low voltage operation, and can be implemented with standard CMOS technology. Examples of lowpass, highpass, and bandpass filters are given which illustrate the synthesis procedures and the versatility of...
    Resource Type:
    Masters Thesis
    Full Text:
    major professor, Dr. David J. Allstot, who has given me motivation, encouragement, valuable advice, and

  • Analytical model of GaAs MESFET output conductance with frequency and temperature dependent parameters

    Creator:
    Lam, Steven C. F.
    Abstract:
    The output characteristics of a conventional GaAs depletion-mode MESFET device have been investigated. One of the important parameters of the small-signal GaAs MESFET model, g[subscript ds] (output conductance), is shown to be frequency and temperature dependent. Variations in g[subscript ds] are a serious problem in many analog and digital circuits...
    Resource Type:
    Masters Thesis
    Full Text:
    professor, Dr. David J. Allstot, for his guidance, advice, and encouragement. He has also been a fine

  • A CAD noise model for chopper-stabilized switched-capacitor filters

    Creator:
    Shenoy, Ravindra Umanath
    Abstract:
    A modeling technique for simulating the noise performance of chopper-stabilized switched-capacitor filters using SPICE2 is presented. A method for selection of switched-capacitor network (SCN) stages to be chopped and an op amp topology for low noise applications are also outlined. Validity of the modeling is verified by the close agreement...
    Resource Type:
    Masters Thesis
    Full Text:
    -Stabilized Switched-Capacitor Filters Redacted for Privacy Abstract approved: if David J. Allstot A

  • Digitally-programmable switched-current filters

    Creator:
    Yesilyurt, Ayse Gul
    Abstract:
    Digitally-programmable filters have been an ongoing research topic for a number of years. The first such filters were FIR transversal filters using Charge-Coupled Devices (CCD's) and IIR recursive filters using switched-capacitor (SC) techniques. Although both techniques achieve excellent results, they require non-standard and/or additional IC fabrication steps. Low substrate doping...
    Resource Type:
    Masters Thesis
    Full Text:
    March 2. 1990 Acknowledgements I am indebted to Dr. David J. Allstot who helped initiate this

  • Modeling of subthreshold current of GaAs MESFET and the design of voltage reference circuit

    Creator:
    Or, Pee-Keong
    Abstract:
    The characteristic of the subthreshold current in a GaAs MESFET exhibits a negative exponential function with Vgs. After studying the behavior of this current in this region over a range of temperature and drain bias voltages, a subthreshold current model was developed. The model was implemented in a circuit simulation...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: Redacted for Privacy David Allstot The characteristic of the subthreshold current in a GaAs