A new class of low noise CMOS common gate transimpedance amplifier is described. What is novel about the design is the total isolation of the photodiode capacitance from determining the -3dB bandwidth. HSPICE simulati...
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ISBN:
(纸本)078033583X
A new class of low noise CMOS common gate transimpedance amplifier is described. What is novel about the design is the total isolation of the photodiode capacitance from determining the -3dB bandwidth. HSPICE simulations of this amplifier were conducted using the Tritech 0.6 mu m CMOS process. Simulated performance gives 2GHz bandwidth, 1.13K Omega transimpedance gain and very low input noise current. In addition, a regulated cascoded transimpedance amplifier is also presented. The low input impedance characteristic is exploited to get wide bandwidth. Simulation gives 4GHz bandwidth, 47dB gain and low input noise current, particularly at high frequencies.
A simple design method has been developed to investigate the dimming control of electronic ballast circuits for fluorescent lamps. This method is based on the steady-state calculation of the ballast at resonant freque...
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A simple design method has been developed to investigate the dimming control of electronic ballast circuits for fluorescent lamps. This method is based on the steady-state calculation of the ballast at resonant frequency, f0, and the inherent characteristics of the fluorescent lamp, i.e. the relationship between the lamp resistance and the lamp power. The inherent lamp characteristics encompass the fact that the voltage across the lamp varies with the lamp power. Including this inherent characteristic into a new lamp Spice simulation model can provide an accurate simulation result of the relations between the ballast operation frequency and the lamp power.
With the increasing performance and density of VLSI circuits as well as the popularity of portable devices such as personal digital assistance, power consumption has emerged as an important issue in the design of elec...
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ISBN:
(纸本)0897919033
With the increasing performance and density of VLSI circuits as well as the popularity of portable devices such as personal digital assistance, power consumption has emerged as an important issue in the design of electronicsystems. Low power design techniques have been pursued at all design levels. However, it is more effective to attempt to reduce power dissipation at higher levels of abstraction which allow wider view. In this paper, we propose a simultaneous scheduling and binding scheme which increases the correlation between consecutive inputs to an execution unit set that the switched capacitance of the execution unit is reduced. The proposed method is implemented and integrated into time scheduling and assignment part of the HYPER synthesis environment. Compared with the original HYPER synthesis system, average power saving of 23.0% in execution units and 14.2% in the whole circuit, is obtained for a set of benchmark examples.
EMC is practiced in efficient operation maintenance of reliability and safety of various electronicsystems used in military and civil sectors and medicare. In Indian context, it is essential to make indigenous produc...
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ISBN:
(纸本)0780341406
EMC is practiced in efficient operation maintenance of reliability and safety of various electronicsystems used in military and civil sectors and medicare. In Indian context, it is essential to make indigenous products acceptable and competitive in domestic & international markets. specially in European union, by designing reliable equipments. This paper addresses the following: a) Quality control for VLSI based systems through good EMC design practices, b) Sub-system module packaging, c) Hardening of electronic components for EMC and reliability, d) Protection of transient effects on digital circuits, e) Component-value-optimisation and f) EMC maintenance considerations. The measurement results complying with the FCC specifications(class B) are included for a microprocessor subsystem.
A novel digital filter design approach based upon Neural Network Optimization (NNO) technique is proposed in the present paper. To demonstrate the feasibility of the NNO design approach, a Continuous Hopfield Neural N...
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A novel digital filter design approach based upon Neural Network Optimization (NNO) technique is proposed in the present paper. To demonstrate the feasibility of the NNO design approach, a Continuous Hopfield Neural Network (CHNN) model is chosen and the relation between the MSE criterion and the Lyapunov Function is also established. The implementation of the NNO digital filter design is described together with some design guidelines, A few linear phase FIR filter design examples are given and the advantages of NNO approach over conventional design techniques are illustrated.
Re-engineering of electroniccircuits has received considerable interest in the design automation community. Re-engineering is the examination and alternation of a system to reconstitute it in a new form, which potent...
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Re-engineering of electroniccircuits has received considerable interest in the design automation community. Re-engineering is the examination and alternation of a system to reconstitute it in a new form, which potentially involves changes at the requirements, design, and implementation level. This paper deals with `redesign' problem in which the original implementation information is either missing or incomplete. Given a target circuit with a test set and blocks of missing gates, a circuit is redesignable if the transfer function of each block of missing gates can be derived from the partial knowledge in existing implementation. The derived transfer functions are then used to construct the missing blocks. This paper presents a redesign process for digital circuits and systems.
This paper introduces a translinear second-order oscillator that is a direct implementation of a non-linear second-order differential equation. It comprises only two capacitors and a handful of transistors and can be ...
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This paper introduces a translinear second-order oscillator that is a direct implementation of a non-linear second-order differential equation. It comprises only two capacitors and a handful of transistors and can be controlled over a very wide frequency range by only one control current. A breadboard version, using transistor arrays, proves the correct operation of the proposed circuit. The oscillator frequency equals 25 kHz, while the total harmonic distortion equals 2.4%.
The paper illustrates the advantages of silicon implementation of a VLSI design representing a complete control system for an electric drive, using electronicdesign Automation (EDA) techniques for the design, simulat...
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The paper illustrates the advantages of silicon implementation of a VLSI design representing a complete control system for an electric drive, using electronicdesign Automation (EDA) techniques for the design, simulation, verification and layout. The implementation of a modern machine control strategy requiring high speed calculation into Application Specific Integrated circuits (ASICs) is described. The design of the control system from ASICs to the complete system commissioning together with test results is presented.
A CA tool to model the behavior of systems using fuzzy identification is presented. The works consist in a class and functions library programmed in object-oriented C++, which construct fuzzy models starting from an i...
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A CA tool to model the behavior of systems using fuzzy identification is presented. The works consist in a class and functions library programmed in object-oriented C++, which construct fuzzy models starting from an input/output data set obtained from analytic models or experimental results. These fuzzy models can be both, used and evaluated by other programs and its computational speed will be faster than other kind of behavioral approaches because these do not need to use complicate interpolation and extraction algorithms.
A new adiabatic structure is presented. This circuit uses only one NMOS transistor for precharge instead of two diodes as in previous circuits. Comparisons with previous circuits were carried out in terms of power dis...
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A new adiabatic structure is presented. This circuit uses only one NMOS transistor for precharge instead of two diodes as in previous circuits. Comparisons with previous circuits were carried out in terms of power dissipation, operating frequency and layout area. The results show that the proposed circuit can save around 20% of area in layout implementation with comparable power savings. The advantages of the proposed circuit have been confirmed by HSPICE simulations and layout design.
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