Patents Assigned to Analog Devices Global Unlimited Company
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Patent number: 10848152Abstract: 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.Type: GrantFiled: September 21, 2018Date of Patent: November 24, 2020Assignee: Analog Devices Global Unlimited CompanyInventors: 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
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Patent number: 10841217Abstract: Aspects of this disclosure relate to detecting a header of a packet. A receive signal path can provide a receive signal that includes packets and a guard preamble between successive packets of the packets. A receiver control circuit can trigger a timer that sets a time for detecting a header of a packet in response to detecting an end of a preamble of the packet.Type: GrantFiled: May 25, 2018Date of Patent: November 17, 2020Assignee: Analog Devices Global Unlimited CompanyInventors: Michael W. O'Brien, Sudarshan Onkar, Joshua J. Nekl
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Patent number: 10830613Abstract: Aspects of the present disclosure relate to decoding the output of a multi-turn magnetic sensor using a successive approximation technique to detect a number of turns of a magnetic target. A decoder circuit can decode a turn count of the multi-turn magnetic sensor by obtaining measurements at nodes that are determined from values of previous measurements.Type: GrantFiled: March 26, 2018Date of Patent: November 10, 2020Assignee: Analog Devices Global Unlimited CompanyInventors: Peter James Tonge, Monsoon Dutt
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Patent number: 10824050Abstract: 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.Type: GrantFiled: August 7, 2015Date of Patent: November 3, 2020Assignee: ANALOG DEVICES GLOBAL UNLIMITED COMPANYInventors: Javier Calpe Maravilla, Eoin E. English, Rafael Mahiques, Jose Carlos Canada, Maria Jose Martinez
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Patent number: 10825628Abstract: 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.Type: GrantFiled: July 17, 2017Date of Patent: November 3, 2020Assignee: Analog Devices Global Unlimited CompanyInventors: Check F. Lee, Philip James Brennan
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Patent number: 10811185Abstract: 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.Type: GrantFiled: September 13, 2018Date of Patent: October 20, 2020Assignee: Analog Devices Global Unlimited CompanyInventors: Liuqing Yang, Jian Ye, Zhijie Zhu
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Patent number: 10790740Abstract: Techniques for improving efficiency of a switched-capacitor voltage regulator are provided. In an example, a switched-capacitor voltage regulator can include a switched-capacitor network having multiple gain configurations, a clock configured to switch capacitors of the switched-capacitor network between a charge state and a discharge state to provide a scaled output voltage, and a controller configured to select a capacitor configuration associated with a gain of the multiple gain configurations to provide the scaled output voltage within a desired output voltage range while continuously switching the capacitor configuration, and to interrupt switching of the capacitor configuration to permit an output voltage of the switched-capacitor voltage regulator to fall below the scaled output voltage but to remain above a lower limit of the desired output voltage range to save power by reducing losses due to the switching.Type: GrantFiled: May 2, 2018Date of Patent: September 29, 2020Assignee: Analog Devices Global Unlimited CompanyInventors: Amit Kumar Singh, Sriram Ganesan, Miguel A. Ruiz, Jose Tejada
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Patent number: 10788517Abstract: Magnetic sensors may be positioned around an opening for a wire to measure the current flowing through the wire. A non-symmetric positioning of the sensors around the target measurement zone can enable an expanded measurement zone compared to conventional current measurement devices. Further, some sensors may be paired such that a hypothetical line connecting the sensors is tangential to the target measurement zone. Other sensors may be paired such that a hypothetical line between the sensors crosses the target measurement zone. The different pairs of the sensors can enable a reduction in the impact of stray field interference on the measurement of the current flowing through the wire.Type: GrantFiled: November 14, 2017Date of Patent: September 29, 2020Assignee: ANALOG DEVICES GLOBAL UNLIMITED COMPANYInventors: Paul Blanchard, III, Jochen Schmitt, Yogesh Jayaraman Sharma, Victor L. Iseli
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Publication number: 20200295977Abstract: A continuous-time sampler has series-connected delay lines with intermediate output taps between the delay lines. Signal from an output tap can be buffered by an optional voltage buffer for performance. A corresponding controlled switch is provided with each output tap to connect the output tap to an output of the continuous-time sampler. The delay lines store a continuous-time input signal waveform within the propagation delays. Controlling the switches corresponding to the output taps with pulses that match the propagation delays can yield a same input signal value at the output. The continuous-time sampler effectively “holds” or provides the input signal value at the output for further processing without requiring switched-capacitor circuits that sample the input signal value onto some capacitor. In some cases, the continuous-time sampler can be a recursively-connected delay line. The continuous-time sampler can be used as the front end sampler in a variety of analog-to-digital converters.Type: ApplicationFiled: March 27, 2020Publication date: September 17, 2020Applicant: Analog Devices Global Unlimited CompanyInventors: Hajime SHIBATA, Brian HOLFORD, Trevor Clifford CALDWELL, Siddharth DEVARAJAN
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Patent number: 10778206Abstract: Apparatus and methods for biasing radio frequency (RF) switches to achieve fast switching are disclosed herein. In certain configurations, a switch bias circuit generates a switch control voltage for turning on or off a switch that handles RF signals. The switch bias circuit provides the switch control voltage to a control input of the switch by way of a resistor. Additionally, the switch bias circuit pulses the switch control voltage when turning on or off the switch to thereby shorten switching time. Thus, the switch can be turned on or off quickly, which allows the switch to be available for use soon after the state of the switch has been changed.Type: GrantFiled: March 20, 2018Date of Patent: September 15, 2020Assignee: Analog Devices Global Unlimited CompanyInventors: Turusan Kolcuoglu, Huseyin Kayahan, Yusuf Alperen Atesal
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Patent number: 10756676Abstract: Amplifier systems for driving a wide range of loads are provided herein. In certain embodiments, an amplifier system includes a voltage output amplifier and a current output amplifier that are electrically coupled in parallel with one another between an input terminal and an output terminal. The amplifier system further includes a control circuit operable to control whether or not the voltage output amplifier and/or current output amplifier drive the output terminal.Type: GrantFiled: October 17, 2018Date of Patent: August 25, 2020Assignee: Analog Devices Global Unlimited CompanyInventors: Yoshinori Kusuda, Simon Nicholas Fiedler Basilico, Sean Patrick Kowalik, Joseph Leandro Balais Peje, Michael C. W. Coln
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Patent number: 10751003Abstract: Vital sign monitors are plagued by noisy photoplethysmography (PPG) data, making it difficult for the monitors to output consistently accurate readings. Noise in PPG signals is often caused by motion. The present disclosure provides improved techniques for reducing motion-related artifacts in optical/PPG measurements for vital signs monitoring. In general, techniques described herein are based on using measurements of reference sensors that include sensors other than optical sensors used for the optical measurements, e.g., biopotential sensors, bioimpedance sensors, and/or capacitive sensors. In particular, techniques described herein aim to filter PPG signals using substantially only the noise components of signals generated by reference sensors, by attenuating or altogether eliminating components of the signals generated by reference sensors which are indicative of the parameter the reference sensors are designed to measure.Type: GrantFiled: July 12, 2018Date of Patent: August 25, 2020Assignee: ANALOG DEVICES GLOBAL UNLIMITED COMPANYInventors: Roberto Munoz, Guillermo Serrano Leon, Carlos Millan Navarro
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Patent number: 10750118Abstract: Disclosed herein are systems and methods for performing DC offset correction of a video signal received over an AC-coupled video link. In one aspect, a transmitter is configured to compute, and provide to a receiver, metadata indicative of a statistical characteristic (e.g., an average or a sum of values) for a group of active pixels of a video signal acquired by a camera. The receiver is configured to compute an analogous statistical characteristic on the video signal received over an AC-coupled video link, and to perform DC offset correction by modifying one or more values of the received video signal based on a comparison of the statistical characteristic computed by the receiver and the one computed by the transmitter and indicated by the received metadata.Type: GrantFiled: September 10, 2019Date of Patent: August 18, 2020Assignee: Analog Devices Global Unlimited CompanyInventors: Isaac Molina Hernandez, Niall D. O'Connell, Sean M. Mullins
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Publication number: 20200256842Abstract: Embodiments of the disclosure provide various nanogap sensor designs (e.g., horizontal nanogap sensors, vertical nanogap sensors, arrays of multiple nanogap sensors, various arrangements for making electrical connections to the electrodes of nanogap sensors, etc.), as well as various methods which may be used to fabricate at least some of the proposed sensors. The nanogap sensors proposed herein may operate as molecular sensors to help identify chemical species through electrical measurements using at least a pair of electrodes separated by a nanogap.Type: ApplicationFiled: October 8, 2018Publication date: August 13, 2020Applicant: Analog Devices Global Unlimited CompanyInventors: Christophe ANTOINE, Himanshu JAIN, Matthew Thomas CANTY, Christina B. McLOUGHLIN, Daniel Joseph LUCEY, Sinead Maire McDERMOTT, Stephen O'BRIEN, Bernard STENSON, Shane GEARY, William Allan LANE, Michael COLN, Mark De Leon ALEA
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Patent number: 10730743Abstract: A gas sensor package is disclosed. The gas sensor package can include a housing defining a first chamber and a second chamber. An electrolyte can be provided in the first chamber. A gas inlet can provide fluid communication between the second chamber and the outside environs. The gas inlet can be configured to permit gas to enter the second chamber from the outside environs. An integrated device die can be mounted to the housing. The integrated device die can comprise a sensing element configured to detect the gas. The integrated device die can have a first side exposed to the first chamber and a second side exposed to the second chamber, with the first side opposite the second side.Type: GrantFiled: October 12, 2018Date of Patent: August 4, 2020Assignee: Analog Devices Global Unlimited CompanyInventors: Oliver J. Kierse, Rigan McGeehan, Alfonso Berduque, Donal Peter McAuliffe, Raymond J. Speer, Brendan Cawley, Brian J. Coffey, Gerald Blaney
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Patent number: 10725959Abstract: SPI Round Robin Mode for Single-Cycle MUX Channel Sequencing. SPI round robin mode is an SPI mode applicable for MUX devices control. It allows the MUX output to connect to the next input channel sequentially in just one clock cycle. Configurations can be made such as: clock edge to use (rising/falling), ascending/descending channel sequence, and enabling/disabling the channels to go through. The device supersedes an ADC with built in sequencing and is applicable to multiplexing, switching, instrumentation, process control and isolation application—while retaining SPI device control and operation.Type: GrantFiled: March 11, 2019Date of Patent: July 28, 2020Assignee: Analog Devices Global Unlimited Company, Inc.Inventors: David Aherne, Jofrey Santillan, Wes Vernon Lofamia, Paul O'Sullivan, Padraig McDaid
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Patent number: 10712197Abstract: An optical device package is disclosed. The optical device package includes a substrate that passes light at an optical wavelength. The optical device package also includes an optical device assembly that is mounted to the substrate. The optical device assembly comprises an optical device die. The optical device die has a first surface that is mounted to and facing the substrate and a second surface that is opposite the first surface. The optical device package further includes a molding compound that is disposed at least partially over the second surface of the integrated device die.Type: GrantFiled: January 11, 2018Date of Patent: July 14, 2020Assignee: Analog Devices Global Unlimited CompanyInventors: David Frank Bolognia, Camille Louis Huin, Brian Hall
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Patent number: 10700668Abstract: The present disclosure provides a pulse generator which generates a pulse train by mixing pulses of a first clock having a first frequency, with pulses of a second clock having a second frequency. Over a predefined time period, the combination of pulses results in a pulse train having an effective frequency which is between the first and second frequencies. A multiplexer is used to select which of the first and second clocks should be provided to the output. Depending on the desired target frequency, the multiplexer is controlled to mix differing amounts of pulses from the first and second clocks. A multiplexer is controlled by a control signal, which is generated using combinatorial logic using the first clock as an input. The pulse generator may be used, for example, as a clock for a charge pump.Type: GrantFiled: June 15, 2018Date of Patent: June 30, 2020Assignee: Analog Devices Global Unlimited CompanyInventors: David Sayago, Thomas F. Roche, John A. Cleary
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Patent number: 10699948Abstract: The disclosed technology generally relates to forming metallization structures for integrated circuit devices by plating, and more particularly to plating metallization structures that are thicker than masking layers used to define the metallization structures. In one aspect, a method of metallizing an integrated circuit device includes plating a first metal on a substrate in a first opening formed through a first masking layer, where the first opening defines a first region of the substrate, and plating a second metal on the substrate in a second opening formed through a second masking layer, where the second opening defines a second region of the substrate. The second opening is wider than the first opening and the second region encompasses the first region of the substrate.Type: GrantFiled: November 13, 2017Date of Patent: June 30, 2020Assignee: ANALOG DEVICES GLOBAL UNLIMITED COMPANYInventors: Jan Kubik, Bernard P. Stenson, Michael Noel Morrissey
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Patent number: 10687005Abstract: Embodiments of the present disclosure provide ADCs particularly suitable for PDAF image sensors, which ADCs may have an increased speed and/or reduced design complexity and power consumption compared to conventional implementations. An example ADC for a PDAF image sensor is configured to implement modified SAR techniques which reduce the number of bit trials required for conversion, and enable increased number of samples in a row-conversion time period of the image sensor. The ADC may implement the modified SAR techniques in combination with CMS in pixel readout signal chain, which may reduce noise without a proportionate increase in ADC sample rate.Type: GrantFiled: September 11, 2018Date of Patent: June 16, 2020Assignee: ANALOG DEVICES GLOBAL UNLIMITED COMPANYInventors: Daniel Peter Canniff, Edward C. Guthrie, Jonathan Ephraim David Hurwitz