Index Catalog // ScholarsArchive@OSU

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

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

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

Design of GaAs monolithically integrated optical receiver amplifier

Creator:: Ju, Shu-ing
Resource Type:: Masters Thesis

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

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

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

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

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

A study of the temperature dependence of the DC current-voltage characteristics of AlGaAs/GaAs heterojunction bipolar transistors with application to bandgap voltage reference sources

Creator:: Gazeley, William G.
Abstract:: The bandgap voltage reference technique, as implemented in Silicon technology, has evolved to a state of advanced development and become the method of choice for temperature independent voltage biasing in integrated circuits. The heterojunction bipolar transistor (HBT), fabricated from epitaxial A1GaAs /GaAs, is developing to a point where basic circuit...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Distortion analysis of switched-current circuits

A CMOS differential line driver

CMOS analog design using a digital gate array

Design of GaAs monolithically integrated optical receiver amplifier

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

MOS switched-current biquadratic filters

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

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

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

A study of the temperature dependence of the DC current-voltage characteristics of AlGaAs/GaAs heterojunction bipolar transistors with application to bandgap voltage reference sources

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