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Relaxation oscillator

About: Relaxation oscillator is a research topic. Over the lifetime, 1952 publications have been published within this topic receiving 22326 citations.


Papers
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Journal ArticleDOI
TL;DR: In this article, a relaxation oscillator with integrated voltage and current reference generation circuitry is presented for on-chip clock signal generation in low-power applications, and the oscillator provides a clock signal at the frequency of 20 kHz with a temperature coefficient of 314 −ppm/°C over a range from −20 to 80 −°C.
Abstract: A relaxation oscillator with integrated voltage and current reference generation circuitry is presented in this paper for on-chip clock signal generation in low-power applications. Designed and simulated in 0.11 μm CMOS technology, the oscillator provides a clock signal at the frequency of 20 kHz with a temperature coefficient of 314 ppm/ °C over a range from −20 to 80 °C. The oscillator’s output signal frequency has a standard deviation of 7.9 % under the influence of device mismatches. It operates with a supply voltage of 1.2 V and has a dynamic power consumption of 4.9 μW at room temperature. An integrated voltage and current reference generator was developed to provide two reference voltages at 484.6 and 663.5 mV with simulated temperature coefficients of 7.5 and 16 ppm/ °C over a range from −20 to 80 °C respectively, as well as a reference current of 26.84 nA with a temperature coefficient of 166 ppm/ °C over the same temperature range.

13 citations

Journal ArticleDOI
TL;DR: In this paper, the authors interpret measurements reported for thin film bridges in terms of a relaxation oscillation at the Josephson frequency, using an equivalent circuit including an intrinsic inductance.

13 citations

Journal ArticleDOI
TL;DR: This paper presents an original time-domain analysis of the phase-diffusion process, which occurs in oscillators due to the presence of white and colored noise sources, and provides useful design-oriented closed-form expressions of such phenomena.
Abstract: This paper presents an original time-domain analysis of the phase-diffusion process, which occurs in oscillators due to the presence of white and colored noise sources. It is shown that the method supplies realistic quantitative predictions of phase-noise and jitter and provides useful design-oriented closed-form expressions of such phenomena. Analytical expressions and numerical simulations are verified through measurements performed on a relaxation oscillator whose behavior is perturbed by externally controlled noise sources. Copyright © 2011 John Wiley & Sons, Ltd.

13 citations

Patent
13 May 2002
TL;DR: In this article, a method for modulating an output voltage of a transmitter circuit comprising a voltage controlled oscillator, a digital/analog converter and an antenna circuit was proposed.
Abstract: The invention relates to a method for modulating an output voltage of a transmitter circuit comprising a voltage controlled oscillator, a digital/analog converter and an antenna circuit, the method comprising the method comprising sending an output signal of sufficient power from the voltage controlled oscillator directly to the antenna circuit and directly modulating a frequency of the output signal of the voltage controlled oscillator. The invention furthermore relates to a transmitter circuit comprising a voltage controlled oscillator having a tank circuit, a digital/analog converter and an antenna circuit, wherein the voltage controlled oscillator is adapted to send an output signal of sufficient power directly to the antenna circuit and wherein the digital/analog converter is arranged to modulate an output frequency of the voltage controlled oscillator. A capacitive load circuit may be connected to the tank circuit or a crystal oscillator circuit of the voltage controlled oscillator for modulating the frequency of the voltage controlled oscillator.

13 citations

Patent
Reinhard Weigand1
12 Dec 1986
TL;DR: An inductive proximity switch as discussed by the authors consists of an oscillator with an externally controllable resonant circuit as well as of a switching amplifier controlled by the oscillator, and it further has a feed or biasing circuit for the oscillators and the switching amplifier.
Abstract: An inductive proximity switch which consists of an oscillator with an externally controllable resonant circuit as well as of a switching amplifier controllable by the oscillator. It further has a feed or biasing circuit for the oscillator and the switching amplifier. Connected in parallel with the capacitor of the resonant circuit is a capacitor with an electronic switch, the electronic switch being responsive to the output of the switching amplifier. Thereby a simple switching hysteresis is obtained.

13 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202322
202242
202128
202044
201962
201855