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公开(公告)号：US11228310B2
公开(公告)日：2022-01-18
申请号：US17080785
申请日：2020-10-26
Applicant: Analog Devices Global Unlimited Company
Inventor： Ying Zhao , Alan O'Donnell , Michael James Twohig , Olly J. Kierse , James Thomas Sheeran , Michael C. W. Coln , Paul W. Stevens , Bruce A. Hecht , Padraig Fitzgerald , Mark Schirmer
Abstract: Optically isolated micromachined (MEMS) switches and related methods are described. The optically isolated MEMS switches described herein may be used to provide isolation between electronic devices. For example, the optically isolated MEMS switches of the types described herein can enable the use of separate grounds between the receiving electronic device and the control circuitry. Isolation of high-voltage signals and high-voltage power supplies can be achieved by using an optical isolator and a MEMS switch, where the optical isolator controls the state of the MEMS switch. In some embodiments, utilizing optical isolators to provide high voltages, the need for electric high-voltage sources such as high-voltage power supplies and charge pumps may be removed, thus removing the cause of potential damage to the receiving electronic device. In one example, the optical isolator and the MEMS switch may be co-packaged on the same substrate.
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92.发明授权公开(公告)号：US11101638B2
公开(公告)日：2021-08-24
申请号：US16153496
申请日：2018-10-05
Applicant: Analog Devices Global Unlimited Company
Inventor： Rajiv Nadig
Abstract: Provided herein are semiconductor dies including multiple controllers for operating over an extended temperature range. In certain embodiments, a semiconductor die includes multiple circuit modules, a temperature sensor that generates a detected temperature signal, an interface that communicates with an external host, a primary controller coupled to the interface and operable to control the circuit modules, and a secondary controller coupled to the interface. In response to the detected temperature signal indicating that the temperature of the semiconductor die exceeds a threshold temperature, the primary controller enables the secondary controller, which in turn disables the primary controller and at least a portion of the plurality of circuit modules to reduce heat dissipation.
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公开(公告)号：US11082051B2
公开(公告)日：2021-08-03
申请号：US15977171
申请日：2018-05-11
Applicant: Analog Devices Global Unlimited Company
Inventor： Gordon John Allan
Abstract: Apparatus and methods for timing offset compensation of frequency synthesizers are provided herein. In certain embodiments, an electronic system includes a frequency synthesizer, such as a fractional-N phase-locked loop (PLL), which generates an output clock signal based on timing of a reference clock signal. Additionally, the electronic system includes an integer PLL configured to compensate for a timing offset, such as a phase offset and/or frequency offset, of the frequency synthesizer based on timing of the output clock signal.
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公开(公告)号：US11044022B2
公开(公告)日：2021-06-22
申请号：US16287796
申请日：2019-02-27
Applicant: Analog Devices Global Unlimited Company
Inventor： Laurence B. O'Sullivan , Shane Geary , Baoxing Chen , Bernard Patrick Stenson , Paul Lambkin , Patrick M. McGuinness , Stephen O'Brien , Patrick J. Murphy
Abstract: Isolators having a back-to-back configuration for providing electrical isolation between two circuits are described, in which multiple isolators formed on a single, monolithic substrate are connected in series to achieve a higher amount of electrical isolation for a single substrate than for isolators formed on separate substrates connected in series. Discrete dielectric regions positioned between isolator components forming an isolator provide electrical isolation between the isolator components as well as between the isolators formed on the substrate. The back-to-back isolator may provide one or more communication channels for transfer of information and/or power between different circuits.
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公开(公告)号：US20210067160A1
公开(公告)日：2021-03-04
申请号：US17080785
申请日：2020-10-26
Applicant: Analog Devices Global Unlimited Company
Inventor： Ying Zhao , Alan O'Donnell , Michael James Twohig , Olly J. Kierse , James Sheeran , Michael C.W. Coln , Paul W. Stevens , Bruce A. Hecht , Padraig Fitzgerald , Mark Schirmer
Abstract: Optically isolated micromachined (MEMS) switches and related methods are described. The optically isolated MEMS switches described herein may be used to provide isolation between electronic devices. For example, the optically isolated MEMS switches of the types described herein can enable the use of separate grounds between the receiving electronic device and the control circuitry. Isolation of high-voltage signals and high-voltage power supplies can be achieved by using an optical isolator and a MEMS switch, where the optical isolator controls the state of the MEMS switch. In some embodiments, utilizing optical isolators to provide high voltages, the need for electric high-voltage sources such as high-voltage power supplies and charge pumps may be removed, thus removing the cause of potential damage to the receiving electronic device. In one example, the optical isolator and the MEMS switch may be co-packaged on the same substrate.
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Patent Agency Ranking
公开(公告)号：US10931290B2
公开(公告)日：2021-02-23
申请号：US15942119
申请日：2018-03-30
Applicant: Analog Devices Global Unlimited Company
Inventor： Vamshi Krishna Chillara , Declan M. Dalton , Pablo Cruz Dato
Abstract: Aspects of this disclosure relate to reducing settling time of a ramp signal in a phase-locked loop. An offset signal can be applied to adjust an input signal provided to an integrator of a loop filter of the phase-locked loop to cause the settling time to be reduced. Disclosed methods of reducing settling time of a ramp signal can improve settling time of a ramp signal independent of the profile of the ramp signal.
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公开(公告)号：US10855951B2
公开(公告)日：2020-12-01
申请号：US16175101
申请日：2018-10-30
Applicant: Analog Devices Global Unlimited Company
Inventor： John Cullinane , Pablo Ventura , Niall D. O'Connell , Isaac Molina Hernandez
Abstract: Disclosed herein are systems and methods for performing SAG effect compensation on a video signal received over an AC-coupled video link. In one aspect, a method for performing SAF effect compensation includes applying a filter to the received video signal to generate a corrected video signal, where a transfer function of the filter is dependent on a transmission parameter that is based on a plurality of parameters of the AC-coupled link. The method further includes extracting predefined content from the corrected video signal, and adjusting the transmission parameter based on a comparison of the extracted predefined content with certain expected content, so that adjusted transmission parameter can be used for one or more subsequent applications of the filter, thereby realizing an adaptive filter.
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公开(公告)号：US10825628B2
公开(公告)日：2020-11-03
申请号：US15652181
申请日：2017-07-17
Applicant: Analog Devices Global Unlimited Company
Inventor： Check F. Lee , Philip James Brennan
Abstract: An microelectromechanical switch uses electrostatic attraction to draw a beam toward a contact and electromagnetic repulsion to disengage and repel the beam from the contact. The electrostatic attraction is generated by a gate electrode. The electromagnetic repulsion is generated between the beam and a magnetic coil positioned on the same side of the beam as the contact. The magnetic coil produces a magnetic field, which induces a current in the beam that repels the magnetic coil. The gate electrode and the magnetic coil may be co-planar or in different planes. A circuit may also operate a coil-shaped structure act as the gate electrode and the magnetic coil, depending on the configuration.
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公开(公告)号：US10824050B2
公开(公告)日：2020-11-03
申请号：US14821395
申请日：2015-08-07
Applicant: ANALOG DEVICES GLOBAL UNLIMITED COMPANY
Inventor： Javier Calpe Maravilla , Eoin E. English , Rafael Mahiques , Jose Carlos Canada , Maria Jose Martinez
IPC: G03B3/10
Abstract: Actuators are used to move a variety of objects to desired positions. It is generally desirable that they can do this quickly without exhibiting overshoot or ringing. Some actuators are required to respond very quickly and examples of these are voice coil drivers used to move lenses in autofocus cameras provided in everyday devices such as smart phones and tablets. A rapid two step controller scheme had already been disclosed by Analog Devices Inc. While the scheme works well, it can only be used reliably if the resonant frequency of the actuator is known to within 2 or 3%. The inventors have discovered that the resonant frequency of an actuator unexpectedly changes as a function of position. This disclosure provides ways of modifying the control scheme to cope with changes in resonant frequency.
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公开(公告)号：US10811185B2
公开(公告)日：2020-10-20
申请号：US16130899
申请日：2018-09-13
Applicant: Analog Devices Global Unlimited Company
Inventor： Liuqing Yang , Jian Ye , Zhijie Zhu
Abstract: The subject disclosure provides for utilizing pulse width modulation (PWM) signaling to influence a closed loop of a shunt boost controller and reduce an imbalance of a load. The imbalance reduction helps reduce remanence of a current transformer (CT) and thereby prevent saturation of the CT. A shunt boost controller provides the control signal to control flow of current to the load. A feedback network provides a feedback signal to the shunt boost controller based on a direct current (DC) voltage and causes a power switch circuit to turn on when a magnitude of the feedback signal exceeds a threshold magnitude. The PWM generator supplies a PWM signal to cause the control signal to be provided more symmetrical to the power switch circuit and causes the power switch circuit to turn on more frequently with the control signal to reduce the imbalance of the load.
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