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公开(公告)号：US10409312B1
公开(公告)日：2019-09-10
申请号：US16040207
申请日：2018-07-19
Applicant: Analog Devices Global Unlimited Company
Inventor： Sanjay Rajasekhar
Abstract: A duty cycled voltage reference circuit is turned on and off synchronously with the operation of a second, reference-consuming, duty-cycled circuit to which it supplies a reference. When the reference consuming circuit no longer has need of the reference, the voltage reference circuit itself is then also powered down. The reference circuit is then powered back up for the next duty cycle sufficiently in advance of the reference consuming circuit such that any auto-zeroing and noise filtering operations required by the reference circuit are complete and a stable reference voltage is output at least simultaneously with, or slightly before, the reference consuming circuit begins to make use of the voltage reference signal. In this manner, synchronous duty-cycled operation of the voltage reference circuit with the reference-consuming circuit is obtained, with the consequence that power consumption by the reference circuit is reduced.
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公开(公告)号：US20190257894A1
公开(公告)日：2019-08-22
申请号：US16277130
申请日：2019-02-15
Applicant: Analog Devices Global Unlimited Company
Inventor： Jochen Schmitt , Eoin Edward English
Abstract: The disclosure provides a magneto resistive field sensor for detecting position in a particular direction. The sensor includes a plurality of magneto resistive elements arranged in pairs. The elements of the same pair are arranged so that their sensitivity direction is oriented in the same direction. The elements of different pairs are oriented so that their sensitivity direction is oriented in a different direction, preferably substantially perpendicular to another pair. The magneto resistive sensors and their sensitivity directions are generally arranged in a plane, which is perpendicular to the direction of measurement of the device. The elements of each pair are arranged in series between two nodes so as to form a bridge circuit. As such, movement of the magnet in the first plane causes a substantially equal change in the elements of each pair, thereby compensating for this movement in the output signal.
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公开(公告)号：US20190242730A1
公开(公告)日：2019-08-08
申请号：US16262676
申请日：2019-01-30
Applicant: Analog Devices Global Unlimited Company
Inventor： Claire Croke , Aine McCarthy , Adrian Sherry , Giovanni C. Dotta , Dan O'Donovan , Sean Wilson , Mary McCarthy , Colin G. Lyden , Fiona Treacy , Michael Byrne
IPC: G01D18/00
CPC classification number: G01D18/00
Abstract: Various examples are directed to methods and system of managing a sensor. A measurement system may receive from the host device, a first register map describing a first configuration of the measurement system for the first sensor. The first configuration may indicate a first measurement frequency for the first sensor. The measurement system may configure a switch matrix to provide a first excitation signal to the first sensor. The measurement system may configure the switch matrix to connect an analog-to-digital converter (ADC) of the measurement system to the first sensor. The measurement system may sample a first raw sensor signal from the first sensor with the ADC at a first measurement frequency described by the first configuration. The measurement system may generate first digital measurement data based at least in part on the first raw sensor signal and send the first digital measurement data to the host device.
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公开(公告)号：US10360926B2
公开(公告)日：2019-07-23
申请号：US15321743
申请日：2015-07-07
Applicant: Analog Devices Global Unlimited Company
Inventor： Mikael M. Mortensen , Kim Spetzler Berthelsen , Robert Adams , Andrew Milia
Abstract: Many processes for audio signal processing can benefit from voice activity detection, which aims to detect the presence of speech as opposed to silence or noise. The present disclosure describes, among other things, leveraging energy-based features of voice and insights on first and second formant frequencies of vowels to provide a low-complexity and low-power voice activity detector. A pair of two channels is provided whereby each channel is configured to detect voice activity in respective frequency bands of interest. Simultaneous activity detected in both channels can be a sufficient condition for determining that voice is present. More channels or pairs of channels can be used to detect different types of voices to improve detection and/or to detect voices present in different audio streams.
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公开(公告)号：US10359449B2
公开(公告)日：2019-07-23
申请号：US15472706
申请日：2017-03-29
Applicant: Analog Devices Global
Inventor： Andreas Callanan
Abstract: Described are various current measurement techniques that can compensate for drift in shunt resistance. Determining a resistance of a shunt resistor, e.g., coupled to a battery terminal, can include introducing a known signal in sync with the chop phases of a dual system chop scheme, chopping the known signal out in the main signal path, and explicitly extracting the known signal in a parallel, additional signal deprocessing path.
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Patent Agency Ranking
公开(公告)号：US10333543B1
公开(公告)日：2019-06-25
申请号：US15975885
申请日：2018-05-10
Applicant: Analog Devices Global Unlimited Company
Inventor： Christopher Peter Hurrell , Hongxing Li , Colin G. Lyden
Abstract: Techniques that allow application of noise-shaped dither without applying dither at sampling, resulting in the analog-to-digital converter (ADC) circuit advantageously being balanced during acquisition. Balancing the ADC circuit at acquisition can reduce the risk of sampling digital interferences that can couple in through the references or substrates.
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公开(公告)号：US20190182445A1
公开(公告)日：2019-06-13
申请号：US16127553
申请日：2018-09-11
Applicant: Analog Devices Global Unlimited Company
Abstract: 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.
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公开(公告)号：US20190178953A1
公开(公告)日：2019-06-13
申请号：US16189854
申请日：2018-11-13
Applicant: Analog Devices Global
Inventor： Alan J. O'Donnell , Robert Guyol , Maria Jose Martinez , Jan Kubik , Padraig L. Fitzgerald , Javier Calpe Maravilla , Michael P. Lynch , Eoin E. English
CPC classification number: G01R33/09 , B81B3/00 , B81B3/0091 , H01F17/0006 , H01F17/0033 , H01F2017/0066 , H01L43/08
Abstract: A magnetic device may include a magnetic structure, a device structure, and an associated circuit. The magnetic structure may include a patterned layer of material having a predetermined magnetic property. The patterned layer may be configured to, e.g., provide a magnetic field, sense a magnetic field, channel or concentrate magnetic flux, shield a component from a magnetic field, or provide magnetically actuated motion, etc. The device structure may be another structure of the device that is physically connected to or arranged relative to the magnetic structure to, e.g., structurally support, enable operation of, or otherwise incorporate the magnetic structure into the magnetic device, etc. The associated circuit may be electrically connected to the magnetic structure to receive, provide, condition or process of signals of the magnetic device.
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公开(公告)号：US10290194B2
公开(公告)日：2019-05-14
申请号：US15056560
申请日：2016-02-29
Applicant: Analog Devices Global
Inventor： Akshayakumar Haribhatt
Abstract: System and techniques for an occupancy sensor are described herein. Images from a camera can be received. Here, the camera has a certain a field of view. A proximity indicator from a proximity detector can be received when an object enters the field of view. The images from the camera are processed to provide an occupancy indication. A first technique is used for the occupancy indication in the absence of the proximity indicator and a second technique is used otherwise.
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公开(公告)号：US10288582B2
公开(公告)日：2019-05-14
申请号：US14993871
申请日：2016-01-12
Applicant: Analog Devices Global
Inventor： Helen Berney , William Allan Lane , Patrick Martin McGuinness , Thomas G. O'Dwyer
IPC: G01N27/414
Abstract: An integrated ion-sensitive probe is provided. In an example, an ion-sensitive probe can include a semiconductor substrate and a first passive electrode attached to the semiconductor substrate. The first passive electrode can be configured to contact a solution and to provide a first electrical voltage as function of a concentration of an ion within the solution. In certain examples, a passive reference electrode can be co-located on the semiconductor substrate. In some examples, processing electronics can be integrated on the semiconductor substrate.
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