The main lines in the design of integrated circuits for accurate analog linear electric signal processing in a frequency range including DC are investigated. A categorization of universal active electronic devices is presented on the basis of the connecti...
National Technical Information Service (NTIS)
Abstract � This paper presents an overview of floating-gate transistors with an emphasis on using them as programmable elements to correct mismatch inherent in analog circuit design. The design methodology is such that floating-gate MOSFETs play the role of programmable elements while forming an inherent part of the circuitry of interest, as well. Such ...
E-print Network
This paper presents a novel fault diagnosis software (called FDSAC-SPICE) based on SPICE simulator for analog circuits. Four important techniques in AFDS-SPICE, including visual user-interface(VUI), component modeling and fault modeling (CMFM), fault injection and fault simulation (FIFS), fault dictionary and fault diagnosis (FDFD), greatly increase ...
NASA Astrophysics Data System (ADS)
... Descriptors : *ELECTRONICS, *MODELS, *ANALOGS, *CIRCUITS, *DIGITAL COMPUTERS, *CIRCUIT ANALYSIS, COMPUTER PROGRAMS ...
DTIC Science & Technology
processor (an integrated circuit that appeared on the market in 1993). By comparing these two circuits from an accurate measurement. Pentium Integrated Circuit A. Calibrate Etched Reticule on Microscope Eyepiece: 1 that connect components in an integrated circuit, analogous ...
An electronic analog of a synthetic genetic network known as the repressilator is proposed. The repressilator is a synthetic biological clock consisting of a cyclic inhibitory network of three negative regulatory genes which produces oscillations in the expressed protein concentrations. Compared to previous circuit analogs of the ...
PubMed Central
In this paper, we describe a method to quickly and accurately estimate substrate coupling effects in analog and mixed digital/analog integrated circuits. Unlike numerical methods, that can be used for circuits containing only a few hundreds of substrate terminals, the new method can quickly ...
In this work we present the impact of the variations in lithography on the performance of analog circuits. Matching pairs of devices are critical in the design of many analog circuit blocks. Simple circuits, such as current mirrors and differential pairs, depend on the matching between ...
A Geiger-Mueller (GM) tube coincidence loss correction circuit for automatically compensating for the dead time of the GM tube in an analog system so that the reading provided by the meter more accurately reflects the true radiation level. The electrical output pulses from the GM tube are differentiated and provided to a retriggerable ...
Energy Citations Database
... Descriptors : (*RECOIL MECHANISMS, SIMULATION), (*LOGIC CIRCUITS, ANALOG COMPUTERS), ANALOG SYSTEMS, CIRCUITS, SPRINGS ...
The other circuit design domain and the focus of this paper is analog circuitry. Analog circuits are of great importance in electronic ...
NASA Website
Jan 22, 2011 ... dc.subject.other, SABLES analog circuits field programmable ... dc.title, Rapid evolution of analog circuits configured on a field ...
The invention disclosed is a digital circuit which emulates a synchro signal in a synchro-resolver follower system for precise control of shaft position and rotation at very low rotational rates. The invention replaces the synchro and drive motor in a synchro-resolver follower system with a digital and analog synchro emulation circuit ...
This paper describes a new reconfigurable analog array (MA) architecture and integrated circuit (IC)
NASA Technical Reports Server (NTRS)
... Descriptors : *Fault tree analysis, *Analog systems, *Circuit analysis, Faults, Algorithms, Microcomputers, Pattern recognition. ...
... Accession Number : ADD013941. Title : Programmable Analog Voltage Multiplier Circuit Means. Descriptive Note : Patent ...
... IV An Isolation Algorithm for the Analog Fault Dictionary, YS ... CIRCUIT ANALYSIS, *DICTIONARIES, *FAULTS, ALGORITHMS, SIMULATORS ...
... CIRCUIT ANALYSIS, ELECTRONIC MULTIPLIERS, ELECTRICAL IMPEDANCE, ACCURACY, ANALOG SYSTEMS, DIGITAL SYSTEMS, DIGITAL ...
Previous work has shown that genetic programming is capable of creating analog electrical circuits whose output equals common mathematical functions, merely by specifying the desired mathematical function that is to be produced. This paper extends this work by generating computational circuits whose output is an approximation to ...
The interactive fault isolation technique optimizes the key attributes of the ATE and the human: the ATE rapidly and accurately characterizes the analog fault signatures, but the actual diagnosis is performed off-line with the aid of a fault dictionary by a human. Fault signatures of unknown signals are rapidly acquired at connector pins and at component ...
... (Author). Descriptors : (*FLUIDICS, *ANALOG SYSTEMS), FLUID AMPLIFIERS, DIGITAL SYSTEMS, DESIGN, CIRCUITS. ...
The main lines in the design of integrated circuits for accurate analog linear electric signal processing in a frequency range including DC are investigated. A categorization of universal active electronic devices is presented on the basis of the connections of one of the terminals of the input and output ports to the common ground ...
... Descriptors : *ANALOG TO DIGITAL CONVERTERS, TELEMETER SYSTEMS, PULSES, LOGIC CIRCUITS, USSR. Subject ...
... Theory of Circuit Analogy in Fracture Diagnosis. ... Analog networks provide the economic tool to analyze ... multiple cracks on the natural frequencies of ...
A substrate coupling noise measurement technique is presented in this paper. The proposed on-chip test circuit can accurately and efficiently measure substrate coupling noise in any type of semiconductor substrate. The measured substrate coupling voltage is converted to a digital code by a simple on-chip analog-todigital converter. The ...
... failure rate data on every conceivable part except electronic circuit connections. ... contains a mixture of analog and digital circuits and represents the ...
... compared to a least squares based dictionary. ... CIRCUIT INTERCONNECTIONS, *CIRCUIT ANALYSIS, *DICTIONARIES, *FAULTS, ALGORITHMS ...
... ANALOG SYSTEMS, *CIRCUIT ANALYSIS, ELECTRONICS, PARAMETERS, PROCESSING, NONLINEAR SYSTEMS, CIRCUITS, FAULTS ...
Modified Backpropagation learning used with the learning rate parameters allows important data to be reinforced and retained, and insignificant data to be labile, providing improved learning speed. In addition to introducing the planned design for chip implementation, an op-amp prototype is created on a PC board. This prototype allows further development at cell-level, as well as a demonstration ...
Jan 22, 2011... "SABLES analog circuits field programmable transistor array FPTA" ... circuits configured on a field programmable transistor array, - ...
used to map analog circuits that can adapt to extreme temperatures under ... The experiments demonstrate circuit adaptation over a wide temperature range ...
A high speed serial data transmission multiplexing circuit, which is operable to accurately transmit data over long distances (up to 3 Km), and to multiplex, select and continuously display real time analog signals in a bandwidth from DC to 100 Khz. The circuit is made fault tolerant by use of a programmable ...
DOEpatents
Abstract�The quantification of substrate noise is an important issue in mixed-signal designs, where sensitive analog circuits are embedded in a hostile digital environment. In this paper we present an experimental environment to characterize the sensitivity of embedded analog circuits to digitally generated ...
Substrate noise is one of the most eminent problems in highfrequency mixed-signal designs, such as communication, biomedical and analog signal processing circuits and systems. Fast-switching digital blocks inject noise into the common substrate hindering the performance of high-precision sensible analog circuitry. Miniaturization ...
- sidered in previous designs. B. Leakage Test Structure and Test Procedure Direct measurement of sub design of the entire test setup to ensure insulator leakage does not affect the measurement. Additionally. 2. MOS leakage test structure. electrical interference must be completely eliminated as even faint
FEEDBACK AND SENSITIVITY IN AN ELECTRICAL CIRCUIT: AN ANALOG FOR CLIMATE MODELS Schwartz, S. E States Government or any agency thereof. #12;Feedback and sensitivity in an electrical circuit: An analog's climate sensitivity is often interpreted in terms of feedbacks that can alter the sensitivity from
In this research, the practical OTA-based inductors of all structures have been studied and their complete passive equivalent circuit models, where the effects of both parasitic elements and finite opened-loop bandwidth have been taken into account, also contain only the conventional standard linear elements i. e. the ordinary resistor, inductor and capacitor, without any ...
A simple analog circuit that measures the National Spherical Torus Experiment (NSTX) axisymmetric eddy current distribution has been designed and constructed. It is based on simple circuit model of the NSTX vacuum vessel that was calibrated using a special axisymmetric eddy current code which was written so that accuracy was maintained ...
A simple analog circuit that measures the NSTX axisymmetric eddy current distribution has been designed and constructed. It is based on simple circuit model of the NSTX vacuum vessel that was calibrated using a special axisymmetric eddy current code which was written so that accuracy was maintained in the vicinity of the current ...
Superconducting microwave transmission lines can be designed to have lower loss, lower dispersion, and lower phase velocity than conventional metal lines. These properties make superconducting transmission lines attractive for use in many devices and systems such as filters and analog to digital converters. The problem with designing microwave circuits ...
Modeling and Analysis of Substrate Coupling in Integrated Circuits by Ranjit Gharpurey Doctor of Philosophy in Engineering- Electrical Engineering and Computer Sciences University of California at Berkeley Professor Robert G. Meyer, Chair Substrate coupling in integrated circuits is the process whereby parasitic current flow in the substrate ...
... (Author). Descriptors : *FAULT TREE ANALYSIS, ALGORITHMS, ADAPTIVE SYSTEMS, MICROCOMPUTERS, SET THEORY, ANALOG SYSTEMS ...
Proposed integrated-circuit network of many identical units convert analog outputs of imaging arrays
... Descriptors : *AUTOMATIC TRACKING, *RADAR TRACKING, *AUTOMATIC GAIN CONTROL, *CIRCUITS, *ANALOG SYSTEMS, *LOOPS, RADAR ...
Jan 22, 2011 ... Title: Temperature-adaptive circuits on reconfigurable analog arrays. Authors: Stoica, Adrian Zebulum, Ricardo S. Keymeulen, Didier ...
... discuss our 'resistive fuse' circuit--the first hardware circuit that explicitly implements either analog or binary line processes in a controlled fashion. ...
The purpose of this paper is to illustrate evolution of analog circuits on a stand-alone board-level
Jan 22, 2011 ... Title: Rapid evolution of analog circuits configured on a field programmable transistor array. Authors: Stoica, A. Ferguson, M. I.. Zebulum, R. S. ...
... Accession Number : ADA127019. Title : Fault Diagnosis of Nonlinear Analog Circuits. Volume III. Fault Diagnosis in the Tableau Context. ...
... Accession Number : ADA117567. Title : Fault Diagnosis of Nonlinear Analog Circuits. Volume I. DC Diagnosis of Hard Failures,. ...
... Title : Exploratory Development of High Temperature Circuit Analog Radar Absorbing Materials (CA-RAM). Descriptive Note : Summary rept. ...
... Descriptors : *Sweep generators, *Patents, Satellite tracking systems, Doppler systems, Circuits, Digital systems, Analog systems, Signal generators ...
level circuit model of the LM124 operational amplifier specifically engineered and calibrated for analog single-event transient (ASET) computer simulations. ...
The electronic analog simulator utilizes a linear operational amplifier circuit in its forward path, and a nonlinear element in its feedback path. The analog circuit exhibits neuronal characteristics. The neuron model includes a synapse and a neuron. The ...
RAPID EVOLUTION OF ANALOG CIRCUITS CONFIGURED ON A. FIELD PROGRAMMABLE TRANSISTOR ARRAY. ADRIAN STOICA. M. I. FERGUSON ...
... PROCESSING, ANALOG SYSTEMS, CIRCUITS, COMPUTERS, DATA STORAGE SYSTEMS, PLAN POSITION INDICATORS, RADAR TARGET ...
... CONTROL, LOGIC CIRCUITS, SWITCHING CIRCUITS, MATHEMATICAL MODELS, SYNCHROS, ANALOG SYSTEMS, UNITED KINGDOM. ...
... ing to probability distributions determined by the other directional ... mean value of the distribution. ... and hence with the di erential circuits described in ...
An apparatus and method is provided for monitoring a plurality of analog ac circuits by sampling the voltage and current waveform in each circuit at predetermined intervals, converting the analog current and voltage samples to digital format, storing the digitized current and voltage samples and using the stored ...
@stanford.edu Abstract Previous work has shown that genetic programming is capable of creating analog electrical circuits.e. the existing circuit) to obtain an improved result. 1 INTRODUCTION An analog electrical circuit whose output (sizing) for a wide variety of analog ...
... neural net of analog valued neurons with 101 neurons in the first (input) layer, 101 analog neurons in the hidden layer ... Analog integrated circuit (IC) ...
A versatile 32-channel ASIC has been developed for accurate processing of high-rate pulse signals from highly segmented detectors. In contrast to conventional approaches, this circuit affords a dramatic reduction in data volume through the use of analog techniques (precision peak detectors and time-to-amplitude converters) together ...
The increasing use of LSI circuits in advanced systems has required the incorporation of linear (analog) functions into digital Bulk CMOS LSI devices. This design required a radiation-hardened 8-bit successive approximation analog-to-digital converter (ADC) which would be implemented as a macrocell of a 24-channel data acquisition ...
In order to satisfy the increasing demand for interchip interconnect bandwidth, a number of current research projects are concentrating on the use of waveguided optical interconnect arrays to span PCB-range distances. To accelerate system design and technology development, CAD tools for the design and the simulation of the interconnects are indispensable. We are developing a design methodology for ...
... circuits, *Equivalent circuits, *Inductors, *Fixed capacitors, *Simulators, *Bandstop filters, *Demodulators, Inductance, Analog systems, Low pass ...
... shows a magnetic flip-flop circuit, using Hypernik V cores, with its electronic analogy, the Ecclas-Jordan trigger circuit. Half -"ave circuits are used ...
By using a new integrated circuit, which is marketed for bluetooth applications, it is possible to simplify the method of measuring the complex impedance, complex reflection coefficient and complex transmission coefficient in an industrial microwave setup. The Analog Devices circuit AD 8302, which measures gain and phase up to 2.7 GHz, ...
PubMed
For detectors at LHC, fast and accurate data acquisition systems are required. The method of analog dynamic range compression in order to overcome the technological limits of quantization circuits is presented and shown for an application at the electromagnetic calorimeter (ECAL) for CMS. A model of the detector pulses and an analysis ...
Current commercial flow cytometers employ analog circuits to produce the feature values of the pulse waveforms that result from particle analysis. The use of analog pulse processing limits the features that can be measured to pulse integral, pulse height, and pulse width, and a large amount of potentially relevant information about the ...
... to digitize the analog output of the radiometer of the radio telescope. ... The activation of this circuit is controlled by the digital sidereal clock and is ...
... Descriptors : *ANALOG TO DIGITAL CONVERTERS, *ELECTRONIC COMMUTATORS, *ELECTRONIC SWITCHES, *SWITCHING CIRCUITS ...
The charge-redistribution principle is employed in this technique for developing programmable MOS charge-mode circuits for analog VLSI neural systems. Known principles of circuit technology are studied in the analog domain that are analogous to nervous systems, and a dynamic technique is ...
... MECHANICAL PROPERTIES, COMPUTERS, THESES, GATES(CIRCUITS), MICROELECTRONICS, ANALOG SYSTEMS, DIGITAL COMPUTERS ...
... Descriptors : *MATHEMATICAL LOGIC, *COMPUTER LOGIC, *LOGIC CIRCUITS, FUNCTIONS(MATHEMATICS), AUTOMATION, ANALOG ...
... SOUND GENERATORS, RECORDING SYSTEMS, ANALOG COMPUTERS, LOGIC CIRCUITS, ELECTRONIC EQUIPMENT, COSTS ...
... Descriptors : *PATENTS, *OPTOMETRY, *INFRARED DETECTORS, *EYE MOVEMENTS, CORNEA, ANALOG TO DIGITAL CONVERTERS ...
... VIDEO AMPLIFIERS, COMPUTER LOGIC, LOGIC CIRCUITS, PULSE AMPLITUDE MODULATION, PULSE DISCRIMINATORS, ANALOG TO ...
The design (synthesis) of analog electrical circuits starts with a highlevel statement of the circuit's desired behavior and requires creating a circuit that satisfies the specified design goals. Analog circuit synthesis entails the creation of both the topology and the ...
The progressive elevation of clock speeds in digital electronic circuits is compelling the merging of design considerations for such circuits with those of analog microwave circuits. For sufficiently high clock rates digital circuits develop substantial a...
Substrate coupling in mixed-signal ASICs can cause important performance degradation of the analog circuits. Accurate simulation is therefore needed to investigate the generation, propagation and impact of substrate noise. Recent studies have mainly concentrated on the time domain behavior of generated substrate noise and dealt mostly ...
Feedback and sensitivity in an electrical circuit: An analog for climate models Stephen E. Schwartz sensitivity is often interpreted in terms of feedbacks that can alter the sensitivity from that of a no-feedback Stefan-Boltzmann radiator, with the feedback concept and algebra introduced by analogy to the use
The present invention provides a circuit for eliminating quadratic and offset errors in the output of a CMOS four-quadrant analog multiplier. These errors are eliminated by feedback circuits that each include one or more CMOS four-quadrant analog multipliers.
THe simulation of a two-wire rheostat is accomplished by an analog output circuit whose value is digitally controlled. It comprises a four-quadrant multiplying digital to analog converter (MDAC) and a current booster including active elements in the feedb...
An improved programmable analog voltage multiplier circuit means (PAVMCM) including various embodiments thereof that are operable in linear/nonlinear fashion. The PAVMCM is generally made up of multiplier circuit means, at least one switch means and at le...
An analog circuit prevents spurious signals when two buttons are simultaneously pressed in a digital signaling telephone keyboard (telephone console). The analog circuit includes a group of pull-up resistors, with one resistor connected to the high switch...
An analog fourth order polynomial curve fitting circuit was designed to linearize the thermocouple voltages of standard thermocouples. Typical design data and performance of the circuit is illustrated for the Type K thermocouple. This circuit can also be ...
The design (synthesis) of analog electrical circuits entails the creation of both the topology and sizing (numerical values) of all of the circuit's components. There has previously been no general automated technique for automatically designing an analog electrical circuit from a ...
This paper presents a new methodology for measuring MOS transistor current mismatch and a new transistor current mismatch model. The new methodology is based on extracting the mismatch information from a fully functional circuit rather than on probing individual devices; this extraction leads to more efficient and more accurate mismatch measurement. The ...
... Pagination or Media Count : 45. ... to generate the responses of digital circuits under both ... MOS circuit models that were previously developed for true ...
In this paper, a new, efficient and simple complementary metal-oxide-semiconductor (CMOS) field-effect transistors (FETs) image sensor (CIS) readout architecture providing both real-time variable-resolution image sensing and dynamic range boosting functions is presented. The proposed correlated-double-sampling (CDS) circuit can not only reduce fixed-pattern noise (FPN) but ...
This article presents the design and application of a low-cost [about $100 (U.S.)] isolated stimulator that can be controlled by two analog-output channels (e.g., output channels of a data-acquisition card or onboard audio channels) of a computer. The device is based on a voltage-to-current converter circuit and can produce accurate ...
NSDL National Science Digital Library
An analog plotter, type NE 230, manufactured by EFKI, was interfaced to a Nuclear Data 50/50 system. The principle of operation and some circuits of the interface are given. The plotter uses the following device codes of the PDP-8/T small computer: 50, 51 and 52. The interface unit is apt to decode and perform 8 instructions, the status of the ...
For mercury-cadmium-telluride detectors, frequently used in Fourier transform IR spectroscopy, the recorded signal is a nonlinear function of the light intensity. This behavior depends on a series resistor in the electronic circuit and thus the illumination of the detector. This nonlinearity must be accounted for to avoid spectroscopic errors. The results of theoretically ...
An apparatus for controlled-potential coulometric analysis of a solution includes a cell to contain the solution to be analyzed and a plurality of electrodes to contact the solution in the cell. Means are provided to stir the solution and to control the atmosphere above it. A potentiostat connected to the electrodes controls potential differences among the electrodes. An electronic ...
Product performance specifications often require monitoring of signal lines for minimum and maximum dc levels and pulse amnplitudes. Monitoring is usually done on a Go/No-Go basis since a recorded value is not required. This type of signal monitoring can be done with an analog-type voltage comparator. The integrated circuit ...
Development, first of analog and later of digital computers, as well as algorithms for analysis of electrical circuits, stimulated the use of electrical circuits for modeling the circulation. The networks used as building blocks for electrical models can provide accurate representation of the hydrodynamic equations ...
The large interconnectivity and moderate precision required in neural network models present new opportunities for analog computing. This paper discusses analog circuits for a variety of problems such as pattern matching, optimization, and learning. Most of the circuits build so far are relatively small, ...
Noninvasive pulmonary function measurements made on rodents are commonly used for studies where quick, relatively easy end-points are required. These types of measurements are of particular advantage for studies where large numbers of animals are involved. Using tests that are simple to administer generally translates to more efficient and more accurate data collection. ...
A solid-state electronic integrator capable of integrating and digitizing small currents was developed. In a recent experiment, pulsed proton beams with an average value of 10/sup -9/ amp were integrated and measured with a 0.1% accuracy. Pulsed or direct currents can be measured accurately down to a lower limit imposed by uncompensated variations of the order of ...
Proposes an analog circuit for use in sedimentation analysis of finely divided solid materials. Discusses a method of particle size distribution analysis and provides schematics of the circuit with list of components as well as a discussion about the operation of the circuit. (JM)
ERIC Educational Resources Information Center
Symbols allowing a clear and readable representation of complicated integrated circuits in current flow diagrams are presented. The outlines of the circuits are replaced by a rectangle for binary and analog elements. The main function of the circuit is sy...
Noise induced hunting is eliminated in successive ranged digital/analog converter bias correction circuits by means of a digital hysteresis circuit. The digital hysteresis circuit comprehends a first up/down counter that counts to its extremums from a pre...
The report describes a new circuit for a clipper amplifier, a device which amplifies and limits an analog signal, preserving only the sign or polarity of the input. The new circuit overcomes some of the limitations of previous clipper circuits. The circui...
Mixed analog and digital mode simulators have been available for accurate transient fault simulation. However, they are not fast enough to simulate a large number of transient faults on a relatively large circuit in a reasonable amount of time. In this paper, we describe a gate-level transient fault simulation environment which has ...
... of a d-dimensional cube. Such codes are commonly used to minimize the inevitable quantization error in the analog-to-digital conversion of serial ...
... MURI 2001 Review Experimental Study of EMP Upset Mechanisms in Analog and Digital Circuits ... probable entry and propagation paths for EMP. ...
... Circuits G4 Digital to Analog (D/A) and Analog to Digital (A/D ... A discussion about data collection and reporting procedures is necessary at this point. ...
... from the computer and mounted in an ... panel, necessary to form various electrical circuits. ... Patent applications, *Panel boards(Electricity), *Analog ...
... circuits. A strongly interacting ultracold Bose gas iu a lattice potential is analogous to electrons in solid-state crystalline media. ...
... Descriptors : *Analog to digital converters, *Patents, Operational amplifiers, Integrators, Digital systems, Pulse trains, Flip flop circuits. ...
... 4. TITLE AND SUBTITLE Analog VLSI Implementations of Auditory Wavelet Transforms Using Switched-Capacitor Circuits 5a. ...
Introductory tutorial organized around the following topics: Basic Summing, Variations in Feedback Circuits, Mixing Analog and Digital Technologies, Generating Waveforms, and Operational Amplifiers.
