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Filtering by: Advisor Porter, J. David Remove constraint Advisor: Porter, J. David Advisor Allstot, David J. Remove constraint Advisor: Allstot, David J.

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  • A 90.5dB DR 1MHz BW Hybrid Two Step ADC with CT Incremental and SAR ADCs

    Creator:
    Wang, Yanchao
    Abstract:
    The sensors in real time data processing IoT devices require high resolution and sub-MHz data converters, usually implemented as Incremental ADCs due to the advantages of oversampling technique and low latency. In discrete time incremental (IDT) ADCs, the sampling switch non-linearity, charge injection degrade the resolution, and power hungry OPAMPs...
    Resource Type:
    Dissertation

  • 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

  • A chopper-stablized CMOS operational amplifier

    Creator:
    Ann, Seung-Han
    Abstract:
    The chopper-stabilized operational amplifier has good low frequency noise properties. Unfortunately a simple technique for simulation of the chopper-stabilized operational amplifier has not been available. This thesis describes the implementation of a differential amplifier using chopper stabilization and its circuit modeling for the SPICE simulation. This circuit has been designed...
    Resource Type:
    Masters Thesis
    Full Text:
    Chopper-Stabilized CMOS Operational Amplifier. Abstract approved: Redacted for privacy David J. Allstot

  • 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

  • A delta-sigma pulse width modulator with pulse dithering

    Creator:
    Lewison, Richard S.
    Abstract:
    Pulse Width Modulation (PWM) has been used extensively for motor control, DC-AC converters, DC-DC converters and in audio applications. The conventional method of generating a pulse width modulated signal involves generating an accurate sawtooth or triangle wave using analog circuits. In CMOS, being analog circuit intensive puts extra constraints on...
    Resource Type:
    Masters Thesis
    Full Text:
    Delta-Sigma Pulse Width Modulator with Pulse Dithering. Abstract approved: David J. Allstot Pulse

  • A fast-settling folded-cascode CMOS operational amplifier

    Creator:
    Abu-Dayeh, Mahmoud A.
    Abstract:
    A fast-settling CMOS operational amplifier using the folded-cascode topology has been designed. The design is based on a theory developed by Yang et al for the optimum settling time of two-pole systems for switched-capacitor applications. The theory states that the two poles are separated by a given factor in order...
    Resource Type:
    Masters Thesis
    Full Text:
    Operational Amplifier. Abstract approved: Redacted for Privacy David J. Allstot A fast-settling CMOS

  • A Fully Integrated Bio-potential Low-noise Amplifier Utilizing Capacitor Multipliers

    Creator:
    Yong, OnnLim
    Abstract:
    In any biomedical signal acquisition system, a front-end amplifier is needed to amplify low amplitude bio-signals while filtering out any unwanted low-frequency artifacts. The design of low frequency poles within the sub-Hz range implies very large time-constants which goes against system integrability. In recent years, the pseudo resistor has been...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ David J. Allstot In any biomedical signal acquisition system, a front-end amplifier is

  • A high-swing class-AB CMOS operational amplifier

    Creator:
    Yu, Choung
    Abstract:
    A high-swing, high-linearity Class-AB CMOS operational amplifier suitable for high speed application is presented. It does not exhibit large-signal slewing effects as do others; its output current is limited by MOSFET aspect ratios and the total power supply voltage. A rail-to-rail common-mode input range is achieved by a topology which...
    Resource Type:
    Masters Thesis
    Full Text:
    Redacted for privacy Abstract approved: Avid J. Alltot A high-swing, high-linearity Class-AB CMOS

  • A high-swing CMOS operational amplifier topology

    Creator:
    Yang, John Jian
    Abstract:
    A circuit topology for high-swing, high-linearity CMOS operational amplifiers has been developed. The technique uses parallel-connected p- and n-channel input pairs to realize an input common-mode voltage range nearly equal to the total power supply voltage. High linearity is achieved by summing the DC bias and AC small-signal currents so...
    Resource Type:
    Masters Thesis
    Full Text:
    . Abstract approved: Redacted for privacy "-David J. Alistot V A circuit topology for high-swing, high

  • A P-well GaAs MESFET technology

    Creator:
    Canfield, Philip C.
    Abstract:
    The semiconductor gallium arsenide (GaAs) has many potential advantages over the more widely used semiconductor silicon (Si). These include higher low field mobility, semi-insulating substrates, a direct band-gap, and greater radiation hardness. All these advantages offer distinct opportunities for implementation of new circuit functions or extension of the operating conditions...
    Resource Type:
    Dissertation
    Full Text:
    sum over j accounts for all the residual shallow donors. In addition boron and nitrogen incorporated