Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 34 for “"operational amplifier"”.
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A MEMS-based precision operational amplifier
Two main difficulties for amplifiers that attempt to make precision DC measurements are the inherent low-frequency noise of the amplifier and the leakage current of the amplifier input stage. This thesis presents a novel fully integrated operational amplifier design that addresses both measurement …
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A circuit grammar for operational amplifier design
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1984.
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Novel approaches in current-feedback operational amplifier design
… bipolar junction transistor Current Feedback Operational Amplifier (CFOA) with a good Common-Mode Rejection Ratio (CMRR), suitable for radio frequency (RF) applications. This research focused on investigation of the established CFOA with the emphases of improving CMRR, bandwidth, …
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Operational Amplifier Bandwidth Extension Using Negative Capacitance Generation
A need for high bandwidth operational amplifiers, or op-amps, exists for certain applications. This need requires research in the area of op-amp bandwidth extension. The proposed method of this thesis uses Negative Capacitance Generation (NCG), which involves using the Miller effect to generate an …
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A high-speed general-purpose externally compensated operational amplifier
Although most modern monolithic solid state operational amplifiers (op-amps) are internally compensated, externally compensated units provide an invaluable degree of freedom to analog designers. As a result, these op-amps offer true 'general purposeness,' since allowing the user to choose the …
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Design of a bipolar rail-to-rail operational amplifier
Thesis (M.Eng. and S.B.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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High Gain Low Power Operational Amplifier Design and Compensation Techniques
… compares the existing compensation methods for operational amplifiers. It explores a method to stabilize the op amps without sacrificing bandwidth to the same degree that commonly used methods do. A creative design methodology combining intuition, mathematical analysis, and mixed level …
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Wide common mode input operational amplifier with serially programmable output offset
Operational amplifiers continue to develop to meet modern demands on performance. This document describes an operational amplifier designed for a highly specific telecommunications application - to serve as the buffer between an I/Q demodulator and Gm-C filter. Requirements set forth by this …
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Design of a thermal operational amplifier : thermics applied to heat signal control.
Thesis. 1977. Ph.D.--Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
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Low voltage, low power CMOS operational amplifier design for switched capacitor circuits
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
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A high voltage, high current, low error operational amplifier with novel features
… project details the design and evaluation of an operational amplifier designed in XF40, a 40 Volt bipolar process. Initially the signal path circuitry of the amplifier is outlined. Design decisions are chiefly formed around high voltage and high current drive functionality. A novel topology is …
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Two-Stage Operational Amplifier Design by Using Direct and Indirect Feedback Compensations
… paper states the stability requirements of the amplifier system, and then presents, and summarizes, the classic two stage CMOS Op-Amp design by employing several popular frequency compensation techniques including traditional Miller compensation, nulling resistor, voltage buffer, and current …
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Design and analysis of a 200 volt, high slew rate, current-limited operational amplifier
… thesis is focused around the development of an amplifier with novel features in a 200 V silicon process internal to Analog Devices. Despite being on a closed-process, the discussion focuses on topological and architectural developments that are applicable to a wide range of high voltage …
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Design of a Precision, Very Low 1/f Noise, Low Power, Rail-Rail I/O, Integrated Bi-CMOS Operational Amplifier
… to rail input and output, integrated Bi-CMOS operational amplifier is presented. Necessity for such an amplifier in the current technological space is examined. Specific attention is given to the novel design of a stable current source requiring no more than approximately 50mV of overhead, for …
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Design of micropower operational amplifiers
The operational amplifier is a fundamental building block for electronic devices and systems. The advancement of modern electronic technology has been setting more performance demand on the underlying integrated circuits including the operational amplifier. Reduction in power consumption and …
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Investigation of stability for composite operational amplifiers
… [1] on the possibilities of employing composite operational amplifiers to extend the high frequency performance of conventional RC active filters · it became evident that theoretical predictions of stability and experimental results did not agree. Other publications concerned with composite …
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Micromachined, Out-of-Plane Micro Flow Sensors
… on-chip signal conditioning using a commercial operational amplifier circuit. A new method to make the sensor array flexible is also proposed.
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Continuous-Time Delta-Sigma Modulators for Ultra-Low-Power Radios
… more relaxed slew-rate requirements on the first operational amplifier and thereby less power consumption. Papers III and IV present a low power 2nd-order CT DSM with one operational amplifier. The main objective was to reduce the power consumption of the usually more critical analog part while …
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Design of a continuous-time bandpass delta-sigma modulator
… level, a 5th -order dual-supply feed-forward operational amplifier (op amp) and a 4th-order single-supply feed-forward op amp have been designed to enable high modulator linearity and coefficient accuracy.
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Increasing the Dynamic Range of Audio THD Measurements Using a Novel Noise and Distortion Canceling Methodology
… for measuring Total-Harmonic-Distortion (THD) of operational amplifiers functioned when compared with two standard methodologies, and whether the new methodology offers any improvement in noise floor and dynamic range along with distortion canceling of the sine-wave source used in the testing. The …
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