Patents Assigned to Analog Devices, Inc.
  • Patent number: 11955930
    Abstract: This disclosure relates to multi-phase oscillators for electronic systems. An example system includes multiple level translator circuits and a ring oscillator circuit that includes multiple outputs. Each level translator circuit includes a first input transistor, a second input transistor, and an output. The ring oscillator circuit includes multiple outputs, and each output of the ring oscillator has a different phase. An output of the ring oscillator is coupled to only one input transistor of a level translator circuit, and the other input transistor of the level translator circuit is coupled to an output of another level translator circuit.
    Type: Grant
    Filed: January 4, 2023
    Date of Patent: April 9, 2024
    Assignee: Analog Devices, Inc.
    Inventors: Eric A. Sagen, Dheemanth Prabhu Hejamady
  • Publication number: 20240111619
    Abstract: Systems and methods related to serial communication devices are provided. An example integrated circuit (IC) device includes interface circuitry coupled to a two-wire serial communication bus having a serial clock (SCL) line and a serial data (SDA) bus line. The IC device further includes bus stuck recovery circuitry to monitor for a local SDA fault condition at the IC device based on a number of clock cycles during which an internal SDA signal (e.g., generated by the IC device) drives the SDA bus line to a first signal state, the clock cycles based on a clock signal received from the SCL line; and responsive to the local SDA fault condition, release the SDA bus line independent of the internal SDA signal, where the SDA bus line is in a second signal state different from the first signal state based on the release.
    Type: Application
    Filed: September 30, 2022
    Publication date: April 4, 2024
    Applicant: Analog Devices, Inc.
    Inventors: Ran TAO, Johan H. MANSSON, Khiem Quang NGUYEN, Long Thanh PHAM, Shane P. KEATING
  • Patent number: 11947041
    Abstract: In an optical detection system, a coded transmission scheme can be used to provide scene illumination. For example, a transmitter can include transmit elements that can be controlled individually or in groups to provide specified modulated (e.g., on-off-keyed) waveforms corresponding to specified transmit code sequences. Light reflected or scattered by an object can be detected by an optical receiver, such as a single-pixel detector. Contributions to the received optical signal corresponding to the respective transmit code sequences can be separated using a correlation-based technique, even when such contributions overlap in time. Regions of a field-of-regard illuminated by ones or groups of the transmit elements can be selected or adjusted, such as to provide controllable spatial (e.g., angular) selectivity of which portions of the field-of-regard are illuminated by particular transmit signals.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: April 2, 2024
    Assignee: Analog Devices, Inc.
    Inventor: Alexander Edward Policht
  • Patent number: 11940496
    Abstract: An automated testing system comprises a high side switch circuit coupled to an input/output (I/O) connection, a low side switch circuit coupled to the I/O connection, a high side force amplifier (HFA) coupled to the high side switch, a low side force amplifier (LFA) coupled to the low side switch, an adjusting circuit coupled to the HFA and the LFA, and a control circuit configured to change the adjusting circuit to change control of current at the I/O connection from one of the HFA or LFA to the other of the HFA or LFA.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: March 26, 2024
    Assignee: Analog Devices, Inc.
    Inventors: Michael E. Harrell, Anthony Eric Turvey, Stefano I D'Aquino, Jennifer W. Pierdomenico
  • Patent number: 11942957
    Abstract: The present disclosure enables firmware-based interleaved-ADC gain calibration and provides hardware-thresholding enhancements. An on-chip memory may store subADC samples and a microprocessor accesses these stored samples for use with the calibration algorithm. Power estimates may be performed using square of each subADC sample to estimate gain error. Thresholding may be applied to the subADC samples, such as Maximum Amplitude Thresholding, Minimum Power Thresholding, and/or using Histogram Output Memory, to determine that samples are valid and may be used for calibration or that subADC data are to be discarded and a new subADC data capture is to be started.
    Type: Grant
    Filed: February 14, 2022
    Date of Patent: March 26, 2024
    Assignee: Analog Devices, Inc.
    Inventors: Kevin R. Rivas-Rivera, Tao Conrad
  • Patent number: 11942473
    Abstract: Electrostatic discharge protection for high speed transceiver interface is disclosed. In one aspect, an electrical overstress (EOS) protection device includes an anode terminal and a cathode terminal, a silicon controlled rectifier, a second NPN bipolar transistor including a base connected to the anode terminal and an emitter connected to an emitter of the first PNP bipolar transistor, and a second PNP bipolar transistor including an emitter connected to an emitter of the second NPN bipolar transistor and a base connected to a base of the first PNP bipolar transistor. Two or more paths for current conduction are present during a positive overstress transient that increases a voltage of the anode terminal relative to the cathode terminal, including a first path through the silicon controlled rectifier and a second path through the second NPN bipolar transistor and the second PNP bipolar transistor.
    Type: Grant
    Filed: June 14, 2022
    Date of Patent: March 26, 2024
    Assignee: Analog Devices, Inc.
    Inventors: Sirui Luo, Srivatsan Parthasarathy, Piotr Olejarz, Daniel Boyko, Ara Arakelian, Stuart Patterson
  • Patent number: 11942960
    Abstract: An analog-to-digital (ADC) converter system and method of using the system that can be used in low power situations. The converter can periodically or recurrently turn off a reference standard in order to conserve power and instead using a stable supply source as a reference voltage. A precise conversion for signal from the analog to the digital domain while maintaining a low quiescent current.
    Type: Grant
    Filed: January 31, 2022
    Date of Patent: March 26, 2024
    Assignee: Analog Devices, Inc.
    Inventors: George Pieter Reitsma, Karthik Pappu, Raymond Thomas Perry, Kalin v. Lazarov, James Raymond Catt, Michael C. W. Coln
  • Patent number: 11940331
    Abstract: Packages for wireless temperature sensor nodes are described. These wireless temperature sensor nodes are suitable for sensing the temperature of remote objects, such as objects that are difficult to access. These packages are designed to enhance the sensor's ability to sense temperature. For example, these packages may be designed to provide a low thermal resistance path between the object and the temperature sensor, a high thermal resistance between an antenna of the wireless temperature sensor node and the object, and at least in some embodiments, immunity to vibrations. One such package includes means for providing a thermal conductive path from the temperature sensor to a thermally conductive support in contact with the object (for example with a thermal resistance less than 10 K/W), and means for thermally conductively decoupling the circuit board from the thermally conductive support (for example by at least 100 K/W).
    Type: Grant
    Filed: September 18, 2020
    Date of Patent: March 26, 2024
    Assignee: Analog Devices, Inc.
    Inventors: Charles D. Smitherman, Michael J. Flaherty, Eugene Oh Hwang
  • Publication number: 20240094200
    Abstract: The present disclosure provides a method of fabricating a target capture and sensor assembly. The method comprises the steps of: providing a fluid path with a target capture surface comprising an anchor species with a first functional group disposed thereon; providing a target capture species to the target capture surface of the fluid path, wherein each target capture species comprises a target capture part and a second functional group configured to react with the first functional group; and exposing at least a portion of the target capture surface of the fluid path to photo radiation so as to cause a photo-initiated reaction between the first functional group and the second functional group, wherein the target capture and sensor assembly further comprises a sensing surface in the fluid path and wherein the target capture surface and the sensing surface are in fluid communication with one another.
    Type: Application
    Filed: September 16, 2022
    Publication date: March 21, 2024
    Applicant: Analog Devices, Inc.
    Inventors: Alexander C. STANGE, Mohamed AZIZE, Hari CHAUHAN
  • Patent number: 11934524
    Abstract: Herein disclosed are approaches for protecting sensitive information within a fingerprint authentication system that can be snooped and utilized to access the device, secured information, or a secured application. The approaches can utilize encryption keys and hash functions that are unique to the device in which the fingerprint authentication is being performed to protect the sensitive information that can be snooped.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: March 19, 2024
    Assignee: Analog Devices, Inc.
    Inventors: Patrick Riehl, Tze Lei Poo
  • Publication number: 20240089153
    Abstract: Digital isolators operable in multiple power modes are described. The digital isolators include a low power mode, in which some circuitry of the isolator operates in a lower power state than in other mode(s) of operation or may be deactivated, and in which data communication across the isolator is not permitted. The isolator may wake from the low power mode in response to a detected event or may periodically wake. Circuitry on one side of the isolator may dictate when and how the isolator wakes from a lower power mode.
    Type: Application
    Filed: November 17, 2023
    Publication date: March 14, 2024
    Applicant: Analog Devices, Inc.
    Inventors: Jason J. Ziomek, Eric C. Gaalaas
  • Patent number: 11907160
    Abstract: This disclosure relates to a distributed processing system for configuring multiple processing channels. The distributed processing system includes a main processor, such as an ARM processor, communicatively coupled to a plurality of co-processors, such as stream processors. The co-processors can execute instructions in parallel with each other and interrupt the ARM processor. Longer latency instructions can be executed by the main processor and lower latency instructions can be executed by the co-processors. There are several ways that a stream can be triggered in the distributed processing system. In an embodiment, the distributed processing system is a stream processor system that includes an ARM processor and stream processors configured to access different register sets. The stream processors can include a main stream processor and stream processors in respective transmit and receive channels. The stream processor system can be implemented in a radio system to configure the radio for operation.
    Type: Grant
    Filed: August 5, 2022
    Date of Patent: February 20, 2024
    Assignee: Analog Devices, Inc.
    Inventors: Manish J. Manglani, Shipra Bhal, Christopher Mayer
  • Patent number: 11899480
    Abstract: A voltage regulator circuit can include two feedback loops, such as to reduce or suppress an unwanted transient condition in an output voltage during transient conditions such as during startup or during load current demand transients. One of the two feedback loops can include a shunt device arranged to provide a temporary current pathway during the transient condition to change current provided to a load connected to an output of the voltage regulation circuit. In addition, or instead, the voltage regulator circuit can include an open-loop regulation circuit separate from a loop corresponding to the first error amplifier. The open-loop regulator circuit can operate in a lower-power mode as compared to a closed-loop regulator circuit. A portion or an entirety of the voltage regulator circuit can be implemented in an integrated circuit, such as monolithically.
    Type: Grant
    Filed: May 27, 2022
    Date of Patent: February 13, 2024
    Assignee: Analog Devices, Inc.
    Inventors: Colin Tse, James Lin
  • Patent number: 11895588
    Abstract: Embodiments of the present disclosure provide systems and methods for maintaining timing precision in different operating modes of a device (e.g., a wireless node). A timing circuit may switch clock signals between two different modes (e.g., high power and low power) while preserving timing precision. In a high-power mode, the timing circuit may provide a high frequency clock signal, and in a lower-power mode, it may provide a low frequency clock signal. Moreover, the switching between the different clock signals may be synchronized to select edges of the low frequency clock signal.
    Type: Grant
    Filed: July 26, 2021
    Date of Patent: February 6, 2024
    Assignee: Analog Devices, Inc.
    Inventors: Brett Warneke, Gary Wayne Ng, Mark Alan Lemkin
  • Patent number: 11894322
    Abstract: Radio frequency integrated device packages having bump and/or ball launch structures are disclosed herein. The bump launch structures can comprise patterned metallic and insulating material that substantially matches the impedance of a radio frequency integrated device die. The ball launch structures can comprise patterned metallic and insulating material that substantially matches the impedance of a system board.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: February 6, 2024
    Assignee: Analog Devices, Inc.
    Inventor: Bruce E. Wilcox
  • Patent number: 11892467
    Abstract: A microelectromechanical systems (MEMS) accelerometer is provided, comprising a substrate disposed in a plane defined by a first axis and a second axis perpendicular to the first axis; a first proof mass and a second proof mass coupled to the substrate and configured to translate in opposite directions of each other along a third axis perpendicular to the first and second axes; and at least one lever coupling the first proof mass to the second proof mass, wherein, the MEMS accelerometer is configured to detect acceleration along the third axis via detection of translation of the first and second proof masses along the third axis; and the MEMS accelerometer exhibits symmetry about the first and second axes.
    Type: Grant
    Filed: December 17, 2021
    Date of Patent: February 6, 2024
    Assignee: Analog Devices, Inc.
    Inventors: Kemiao Jia, Xin Zhang, Michael Judy
  • Publication number: 20240039547
    Abstract: Embodiments of the disclosure provide improved mismatch shaping for a digital to analog converter, the method including splitting an original input of a circuit into a plurality of time interleaved data streams; element rotation selection (ERS) logic to process the plurality of time interleaved data streams; and directing one of the plurality of time interleaved data streams to the ERS logic according to a decision of a data-weighted sigma-delta (SD) modulator. In other example implementations, the method can further include multiplexing one of the plurality of time interleaved data streams to be provided to a barrel shifter. In yet other examples, the method can include monitoring a difference between the plurality of time interleaved data streams as a basis for the directing such that a data sample rate for the digital to analog converter is reduced over a time interval.
    Type: Application
    Filed: July 29, 2022
    Publication date: February 1, 2024
    Applicant: Analog Devices, Inc.
    Inventor: Khiem Quang NGUYEN
  • Publication number: 20240037211
    Abstract: Systems, devices, and methods related to wireless battery management system (wBMS) are provided. For example, a wBMS network manager comprises a memory to store a list of hardware identifiers (IDs), wherein each hardware ID in the list is associated with a respective one of a plurality of battery modules; and mapped, based on a predetermined mapping, to a different one of a plurality of source IDs; an interface to receive, from a remote battery module, a packet including a source ID and a hardware ID associated with the remote battery module; and one or more processing units to search, using the source ID in the received packet and the predetermined mapping, for a first hardware ID from the list of hardware IDs; and authenticating the remote battery module based on a comparison of the hardware ID in the received packet to the first hardware ID from the list.
    Type: Application
    Filed: November 29, 2022
    Publication date: February 1, 2024
    Applicant: Analog Devices, Inc.
    Inventor: Douglas Dealton LEWIS
  • Patent number: 11874791
    Abstract: Disclosed herein are two-wire communication systems and applications thereof. In some embodiments, a slave node transceiver for low latency communication may include upstream transceiver circuitry to receive a first signal transmitted over a two-wire bus from an upstream device and to provide a second signal over the two-wire bus to the upstream device; downstream transceiver circuitry to provide a third signal downstream over the two-wire bus toward a downstream device and to receive a fourth signal over the two-wire bus from the downstream device; and clock circuitry to generate a clock signal at the slave node transceiver based on a preamble of a synchronization control frame in the first signal, wherein timing of the receipt and provision of signals over the two-wire bus by the node transceiver is based on the clock signal.
    Type: Grant
    Filed: January 31, 2022
    Date of Patent: January 16, 2024
    Assignee: Analog Devices, Inc.
    Inventors: Martin Kessler, Miguel A. Chavez, Lewis F. Lahr, William Hooper, Robert Adams, Peter Sealey
  • Patent number: 11876346
    Abstract: A laser pulse emitter circuit comprises a laser diode and a laser diode driver circuit. The laser diode driver circuit includes an inductive circuit element in series with the laser diode, at least one capacitive circuit element connected in series with the inductive circuit element, and a switch circuit configured to activate the laser diode using duty cycling that includes an on-period and an off-period, wherein energy used in an activation of the laser diode is stored in the inductive circuit element and the at least one capacitive circuit element, and the stored energy is recycled by use in a subsequent activation of the laser diode.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: January 16, 2024
    Assignee: Analog Devices, Inc.
    Inventor: Junhua Shen