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The sample and hold amplifier plays an important role in the front end of an analog to digital converter. In this work, a low power, high resolution, and high speed sample and hold amplifier is presented. The architecture of the proposed mainly adapts the class A/B folded cascode amplifier with a gain boosting technique and a switch capacitor common mode feedback scheme. The performance comparisons...
In this paper we will present a touch sensitive compact design that is used for the actuation of myo electric arm. This system was developed as an alternative to today's commonly used electromechanical prosthetic actuation systems. With this system the amputee has to just touch the switch and individual can do couple of activities. Also this switching system is capable of closing and opening of grip...
Reducing leakage dissipation is becoming more and more important in low-power design. The dynamic energy dissipation reduction of adiabatic circuits using power-gating schemes has been introduced. In order to reduce leakage losses of the adiabatic circuits using power-gating schemes under deep submicron process, this paper proposes a MTCMOS (Multi-Threshold CMOS) power-gating scheme for adiabatic...
This paper proposes a full-swing charge pump with zero phase offset for charge pump PLL (CP-PLL). The origins of phase offset are discussed and theoretically analyzed. Standard topologies for phase offset improvement are discussed and a new charge pump topology with zero phase offset and full-swing output is presented. Simulation results are presented to show the excellence of charge pump zero phase...
This paper presents a novel configuration for Ion sensitive Field Effect Transistors (ISFETs) to be used as a threshold detector during a Single Nucleotide Polymorphism (SNP) base pair match. ISFET-based inverters are used as reaction threshold detectors to convey the chemical reaction level to a logic output once a threshold has been reached. Using this, DNA logic functions are derived for nucleotides...
A 5.4 GHz multiple-pass ring voltage controlled oscillator (VCO) based phase-locked loop (PLL) is described. For the sake of active devices' sensitivity to process and temperature regarding ring oscillators, an effective automatic frequency calibration scheme is proposed. A new process-independent differential to single (DTOS) is used to adjust control voltage range and loop gain. The chip is implemented...
An atomic-scale quantum conductance switch is demonstrated which allows to open and close an electrical circuit by the controlled and reproducible reconfiguration of silver atoms within an atomic-scale junction (Fig. 1). The only movable parts of the switch are the contacting atoms. The atomic switch is entirely controlled by an external voltage applied to an independent third gate electrode. Controlled...
This paper presents a DC-30 GHz single-pole-four-throw (SP4T) CMOS switch using 0.13 mum CMOS process. The CMOS transistor layout is done to minimize the substrate network resistance. The on-chip matching inductors and routing are designed for a very small die area (250times180 mum2), and modeled using full-wave EM simulations. The SP4T CMOS switch result in an insertion loss of 1.8 dB and 2.7 dB...
A current-control mode three-level pulse width modulation (PWM) switching power amplifier for active magnetic bearings was proposed in this paper. The basic structure of this power amplifier is introduced. The basic characteristics of this power amplifier are simulated in PSPICE, measured and compared with that of a standard two-level PWM switching power amplifier. It is shown that the current ripple...
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