Topic
Relaxation oscillator
About: Relaxation oscillator is a research topic. Over the lifetime, 1952 publications have been published within this topic receiving 22326 citations.
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22 Mar 2020
TL;DR: A compact temperature sensor that directly controls a temperature-dependent self-refresh period of a mobile DRAM in 28nm CMOS using a dynamic threshold MOST (DTMOST) as a sensing device that periodically discharges a capacitor.
Abstract: This paper presents a compact temperature sensor that directly controls a temperature-dependent self-refresh period of a mobile DRAM in 28nm CMOS. It uses a dynamic threshold MOST (DTMOST) as a sensing device that periodically discharges a capacitor. The discharging voltage across the capacitor denotes a supply-independent behavior and the temperature-dependent discharging period of the DTMOST diode is detected by incorporating it into a relaxation oscillator. The sensor occupies only 0.017mm2 and achieves a 3σ inaccuracy of ±0.9°C from -10 to 90°C after 1-point trim. Operating from 0.85 to 1.15V, it shows a low supply sensitivity of 0.27°C/V at room temperature. It consumes 33.75µW and achieves a resolution of 10.2mK. This corresponds to a resolution FoM of 0.36pJ· K2.
6 citations
TL;DR: Five different continuous sliding-modes controllers are provided to robustly track a desired time-varying trajectory, exponentially or in a finite time, for the Van der Pol oscillator despite the presence of external disturbances.
Abstract: Robust output tracking control of Van der Pol oscillator is an important practical problem from an application point of view. Output feedback-based robust tracking control strategies are proposed in this work for that purpose. First, a high-order sliding-mode observer is used to estimate the oscillator states from the measurable output and to identify some types of disturbances. Then, five different continuous sliding-modes controllers (Continuous-SMCs) are provided to robustly track a desired time-varying trajectory, exponentially or in a finite time, for the Van der Pol oscillator despite the presence of external disturbances. The closed-loop stability for each Continuous-SMC is given based on input-to-state stability properties. Finally, experimental validations are also provided to show the feasibility of the proposed controllers in real time.
5 citations
21 Oct 1996
TL;DR: The injection-locked oscillator (ILO) standard cell as discussed by the authors consists of a differential comparator and even stages of an inverter chain, and is highly suitable for standard cell applications.
Abstract: The new injection-locked oscillator (ILO) standard cell consists of a differential comparator and even stages of an inverter chain. The ILO has a very simple design and is highly suitable for standard cell applications. The new ILO can be used as a stand alone voltage control oscillator (VCO) or as a building block of a digital phase lock loop. Applications of this circuit include VCO, clock recovery, and clock synthesizer. The characteristics as well as simulation and testing results of the new ILO are presented.
5 citations
Patent•
02 May 1975TL;DR: In this article, the start-up delay of an externally synchronized astable multivibrator is reduced by placing a low impedance path between ground and the base electrode of a transistor in the input circuit to the multi-ibrator.
Abstract: The start-up delay of an externally synchronized astable multivibrator is reduced by placing a low impedance path between ground and the base electrode of a transistor in the input circuit to the multivibrator in response to the signal which turns on the multivibrator.
5 citations
TL;DR: In this paper, the authors studied the relaxation oscillations of sinusoidally and triangularly driven inductively shunted Josephson junctions by reducing the description of the dynamics to one-dimensional circle maps.
5 citations