Patents Assigned to Analog Devices, Inc.
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Patent number: 11545991Abstract: Disclosed herein are some examples of analog-to-digital converters (ADCs) that can perform auto-zeroing with amplifying a signal for improvement of a signal-to-noise ratio. The ADCs may produce a first digital code to represent an analog input signal and a second digital code based on a residue from the first digital code, and may combine the first digital code and the second digital code to produce a digital output code to represent the analog input signal. The ADC may utilize a first observation and a second observation of an analog residue value representing the residue to produce the second digital code.Type: GrantFiled: November 11, 2021Date of Patent: January 3, 2023Assignee: Analog Devices, Inc.Inventors: Jesper Steensgaard-Madsen, Andrew J. Thomas
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Patent number: 11543402Abstract: An impedance measurement system for detecting an analyte in a sample is disclosed. The system includes first, second, and third electrodes, wherein at least a portion of the third electrode is positioned between the first and second electrodes, means for generating an electromagnetic field between the first and second electrodes, means for electrically controlling the third electrode, wherein the third electrode modifies the electromagnetic field, and a processor for detecting a presence of the analyte in the sample, based at least in part on a property of the electromagnetic field.Type: GrantFiled: May 4, 2018Date of Patent: January 3, 2023Assignee: Analog Devices, Inc.Inventors: Thomas G. O'Dwyer, Gaurav Vohra, Xin Zhang, YounJae Kook, Isaac Chase Novet, Venugopal Gopinathan
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Patent number: 11545886Abstract: Pulse width modulation (PWM) controllers for hybrid converters are provided herein. In certain embodiments, a PWM controller for a hybrid converter includes a threshold generation circuit for generating a threshold signal based on an output voltage of the hybrid converter, a threshold adjustment circuit for generating an adjusted threshold signal based on sensing a voltage of a flying capacitor of the hybrid converter, and a comparator that generates a comparison signal based on comparing the adjusted threshold signal to an indication of an inductor current of the hybrid converter. The output of the comparator is used for generating PWM control signals used for turning on and off the switches (for instance, power transistors) of the hybrid converter.Type: GrantFiled: January 19, 2021Date of Patent: January 3, 2023Assignee: Analog Devices, Inc.Inventors: Yingyi Yan, San Hwa Chee
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Patent number: 11539384Abstract: A transmitter with a DC detection circuit that can control when a modulator of the transmitter is active. When data is being transmitted, a tone introduced by a mixer in the transmit path is hidden by the data signal and has minimal effect on the transmit path. However, when there is no data, the tone can cause undesirable noise. A modulator may move the tone or noise outside of the transmitter's bandwidth. As the data can hide the tone, the DSM may only be needed when there is a DC signal. By activating the DSM only when a DC signal is detected, the extra power introduced by the modulator can be reduced while eliminating in-band noise.Type: GrantFiled: July 22, 2021Date of Patent: December 27, 2022Assignee: Analog Devices, Inc.Inventors: Robert D. Solanki, Christopher Mayer
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Patent number: 11539373Abstract: Herein disclosed are some examples of metastability detectors and compensator circuitry for successive-approximation-register (SAR) analog-to-digital converters (ADCs) within delta sigma modulator (DSM) loops. A metastability detector may detect metastability at an output of a SAR ADC and compensator circuitry may implement a compensation scheme to compensate for the metastability. The identification of the metastability and/or compensation for the metastability can avoid detrimental effects and/or errors to the DSM loops that may be caused by the metastability of the SAR ADCS.Type: GrantFiled: June 4, 2021Date of Patent: December 27, 2022Assignee: Analog Devices, Inc.Inventor: Abhishek Bandyopadhyay
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Patent number: 11531095Abstract: Techniques are described to for improving a resolution of a light detection and ranging (LIDAR) system. A receiver circuit of a LIDAR system can sample a reflection signal from an object in response to a transmitted light pulse. A controller can determine a curve fit to the received samples and, based on a peak value of the curve fit, determine a precise location of the object.Type: GrantFiled: April 3, 2019Date of Patent: December 20, 2022Assignee: Analog Devices, Inc.Inventor: Harvey Weinberg
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Patent number: 11529102Abstract: There is disclosed herein examples of systems and methods of processing captured heart sounds with frequency-dependent normalization. Based on an amount of attenuation of a first heart sound, a second heart sound can be normalized by modifying portions of the second heart sound by amounts determined based on frequencies of the portions. Accordingly, the systems and methods disclosed herein can result in different amounts of modification of different portions of the second heart sound based on the different frequencies of the portions.Type: GrantFiled: December 2, 2019Date of Patent: December 20, 2022Assignee: Analog Devices, Inc.Inventors: Tony J. Akl, Venugopal Gopinathan
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Patent number: 11533027Abstract: Data isolators are described. The data isolators include a differential receiver having cross-coupled single-ended amplifiers. The single-ended amplifiers may be referenced to a time-varying reference potential. The cross-coupling of the single-ended amplifiers may provide high speed, low power consumption operation of the data isolator.Type: GrantFiled: October 18, 2019Date of Patent: December 20, 2022Assignee: Analog Devices, Inc.Inventor: Xiao Hong Du
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Publication number: 20220395227Abstract: An alignment tool helps a patient position a chest-worn sensor device, such as a device for daily at-home monitoring of cardiopulmonary health conditions. The alignment tool includes a sensor connector that engages with the sensor device and a strap. The strap includes a first portion that has a protruding region sized to fit into the patient's suprasternal notch. The strap includes a second portion that engages with the sensor connector. The sensor connector and the first portion of the strap with the suprasternal notch protrusion are separated by a configurable length. A healthcare provider may set the length based on the distance between the patient's suprasternal notch and heart.Type: ApplicationFiled: June 10, 2021Publication date: December 15, 2022Applicant: Analog Devices, Inc.Inventors: David BOLOGNIA, Jiawen BAI
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Patent number: 11526153Abstract: There is disclosed herein programmable delay lines and control methods having glitch suppression. In particular, the programmable delay lines may include latches that are triggered based on a trigger event of an input signal (which is often an edge of the input signal). The programmable delay lines may include one or more latches coupled between capacitor and transistor subassemblies and the latches, where the latches cause a delay between the time the trigger event arrives at the capacitor and transistor subassemblies and the latches. The delay can prevent the latches from updating at the same time that the edge of the input signal arrives at the capacitor and transistor subassemblies, which can suppress glitches that can causes errors in operation.Type: GrantFiled: November 9, 2020Date of Patent: December 13, 2022Assignee: Analog Devices, Inc.Inventor: John Kenney
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Publication number: 20220390483Abstract: Disclosed herein are aspects of a multiple-mass, multi-axis microelectromechanical systems (MEMS) accelerometer sensor device with a fully differential sensing design that applies differential drive signals to movable proof masses and senses differential motion signals at sense fingers coupled to a substrate. In some embodiments, capacitance signals from different sense fingers are combined together at a sensing signal node disposed on the substrate supporting the proof masses. In some embodiments, a split shield may be provided, with a first shield underneath a proof mass coupled to the same drive signal applied to the proof mass and a second shield electrically isolated from the first shield provided underneath the sense fingers and biased with a constant voltage to provide shielding for the sense fingers.Type: ApplicationFiled: June 8, 2021Publication date: December 8, 2022Applicant: Analog Devices, Inc.Inventors: Jianglong Zhang, Xin Zhang
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Patent number: 11519726Abstract: Couplers for selectively coupling in-plane and out-of-plane motion between moving masses are provided herein. In particular, aspects of the present application provide for a coupler configured to couple in-plane motion between moving masses while decoupling out-of-plane motion between the moving masses. The selective couplers as described herein may be used in a device, such as a microelectromechanical systems (MEMS) inertial sensor. In some embodiments, a MEMS inertial sensor comprises a first mass configured to move in-plane, a second mass configured to move in-plane and out-of-plane, and a coupler coupling the first and second masses and comprising two levers coupled to an anchor point by respective tethers and coupled to each other by a spring.Type: GrantFiled: June 19, 2020Date of Patent: December 6, 2022Assignee: Analog Devices, Inc.Inventors: Jeffrey A. Gregory, Laura Cornelia Popa
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Publication number: 20220384604Abstract: Provided are methods of manufacturing comprising providing a FET base structure, the FET base structure comprising a substrate, a drain and a source; and providing a channel layer on the FET base structure; and providing a first layer on the FET base structure. The first layer comprises a one-dimensional or two-dimensional material and is arranged on an upper surface of the channel layer so as to form a sensing surface of the FET. The step of providing the channel layer comprises forming the channel layer and subsequently transferring the channel layer onto the FET base structure. Alternatively or additionally, the step of providing the first layer on the FET base structure comprises forming the first layer and subsequently transferring the first layer onto the FET base structure.Type: ApplicationFiled: May 27, 2022Publication date: December 1, 2022Applicant: Analog Devices, Inc.Inventors: Mohamed AZIZE, Shekhar BAKSHI
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Publication number: 20220385242Abstract: A low noise amplifier topology can achieve very low noise figure by applying multiple magnetic coupling between gate matching inductors and source degeneration inductor of a field effect transistor. The resulting low noise amplifier has smaller inductors, which can have lower thermal noise contribution, and can maintain good gain and linearity performance. For example, a low noise amplifier includes a first inductor to receive an input; a second inductor coupled to the first inductor in series; a first field effect transistor device whose gate receives a signal from the second inductor; and a third inductor coupled to a source of the first field effect transistor device, where the third inductor is magnetically positively coupled to the first inductor and the second inductor.Type: ApplicationFiled: March 8, 2022Publication date: December 1, 2022Applicant: Analog Devices, Inc.Inventors: Xudong WANG, William B. BECKWITH
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Publication number: 20220381720Abstract: The present disclosure provides a reference electrode for providing a reference potential during measurement of a property of a sample. The reference electrode comprising: a reference electrode layer; and a reference layer provided over at least a part of the reference electrode layer and defining a sample receiving region which is separated from the reference electrode layer by the reference layer. In one embodiment, the reference layer comprises fluorinated or silanized graphene and/or fluorinated or silanized graphene oxide. Alternatively, the graphene or graphene oxide are functionalised or doped so as to form a super-hydrophobic reference layer.Type: ApplicationFiled: May 27, 2022Publication date: December 1, 2022Applicant: Analog Devices, Inc.Inventor: Mohamed AZIZE
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Publication number: 20220385318Abstract: Non-idealities of input circuitry of a receiver signal chain can significantly degrade the overall performance of the receiver signal chain. A digital nonlinearity correction (NLC) can be implemented in a receiver signal chain having an ADC. Digital NLC can be designed as a drop in signal preconditioner for existing RF ADC wideband receiver signal chains. A unique equalizer can compensate for a variety of mixer spurs. Accordingly, digital NLC can correct nonlinearities due to mixers and any amplifiers preceding or following the ADC, potentially improving receive chains performance by 15-25 dB. Such a digital NLC solution can be particularly beneficial in defense and instrumentation applications which demand the greatest performance.Type: ApplicationFiled: May 26, 2022Publication date: December 1, 2022Applicant: Analog Devices, Inc.Inventors: Xiao Yu WANG, Milutin Pajovic, Omer Tanovic, Tao Yu, Nevena Rakuljic, Gregory Patrick Davis
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Publication number: 20220381728Abstract: A sensing assembly comprises for detecting a property of a sample comprises a field effect transistor (FET) configured to output a first signal indicative of a property of a sample comprises: a first layer providing a sensing surface; a channel provided below the first layer; and a drain and a source in electrical communication with the channel. The sensing assembly may further comprise a gate provided below the first layer and the first layer comprises a one-dimensional or two-dimensional material. Alternatively or additionally, the first layer comprises N-polar hexagonal boron nitride (hBN).Type: ApplicationFiled: May 27, 2022Publication date: December 1, 2022Applicant: Analog Devices, Inc.Inventor: Mohamed AZIZE
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Publication number: 20220383868Abstract: It is not trivial to implement speech and natural language processing in offline embedded systems. Voice control of devices in various settings and applications can benefit from an embedded speech and natural language processing solution. One feature that helps to correct automatic speech recognition outputs is grammar projection. Another feature addresses situations where there is imperfect information or incomplete information by providing an application programming interface to enable structured queries and responses between an interpreter and an application.Type: ApplicationFiled: May 26, 2022Publication date: December 1, 2022Applicant: Analog Devices, Inc.Inventors: Jonathan Samuel YEDIDIA, Daniel SCHMIDT, Cristobal ALESSANDRI, Reuben Harry COHN-GORDON, Ilker BAYRAM, Ravi Kiran RAMAN, Nicholas Eastman MORAN, Atulya YELLEPEDDI, Milutin PAJOVIC, Sunrita PODDAR
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Patent number: 11511037Abstract: Systems and methods are provided for measuring depth, position, and/or angle of a cannula in a medical drug delivery device. In particular, a drug delivery device having a cannula is positioned adjacent to tissue, a voltage pulse is provided to the cannula, a charge is measured at an electrode in the drug delivery device, and the depth of penetration of the cannula is determined based in part on the charge at the first electrode. Systems and methods described herein can be used to determine subcutaneous insertion depth in a wearable bolus injector. In some implementations, insertion depth determination is achieved through capacitive sensors which measure needle depth in a drug delivery device.Type: GrantFiled: June 7, 2019Date of Patent: November 29, 2022Assignee: Analog Devices, Inc.Inventor: Shrenik Deliwala
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Patent number: 11515884Abstract: A circuit having a capacitance driver circuit can allow for reduction of thermal noise to an application circuit. An output of the capacitance driver circuit can drive a capacitor for use by the application circuit coupled to the capacitor at the output of the capacitance driver circuit. The capacitance driver circuit can be structured to operate over a bandwidth of interest. With an input signal, received at the capacitance driver circuit, associated with a target voltage, an output voltage can be provided at the output of the capacitance driver circuit as a bandlimited filtered voltage value of the target voltage, where a root-mean-square voltage deviation of the output voltage from the target voltage, due to thermal noise, is less than a square root of (kT/C). The term k is Boltzmann's constant, T is Kelvin temperature of the capacitance driver circuit, and C is the capacitance of the driven capacitor.Type: GrantFiled: April 14, 2021Date of Patent: November 29, 2022Assignee: Analog Devices, Inc.Inventor: Andrew Joseph Thomas
