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公开(公告)号：US11899480B2
公开(公告)日：2024-02-13
申请号：US17827145
申请日：2022-05-27
Applicant: Analog Devices, Inc.
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.
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公开(公告)号：US11621539B2
公开(公告)日：2023-04-04
申请号：US16890600
申请日：2020-06-02
Applicant: Analog Devices, Inc.
Inventor： Shawn S. Kuo , James Lin , Ronald A. Kapusta
Abstract: This disclosure is directed to, among other things, techniques to quickly replenish a capacitance of a laser diode driver circuit after an optical pulse, which can enable a burst of pulses (more than one pulse), such as to enable pulse coding. An energy reservoir circuit can be coupled to a laser diode driver circuit and to a power supply circuit and configured to store enough energy to fire the RD laser diode driver more than once. The energy reservoir circuit can act as an intermediate interface between the RD laser diode driver and the power supply circuit to better optimize the current requirements of each block.
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公开(公告)号：US20210376566A1
公开(公告)日：2021-12-02
申请号：US16890600
申请日：2020-06-02
Applicant: Analog Devices, Inc.
Inventor： Shawn S. Kuo , James Lin , Ronald A. Kapusta
Abstract: This disclosure is directed to, among other things, techniques to quickly replenish a capacitance of a laser diode driver circuit after an optical pulse, which can enable a burst of pulses (more than one pulse), such as to enable pulse coding. An energy reservoir circuit can be coupled to a laser diode driver circuit and to a power supply circuit and configured to store enough energy to fire the RD laser diode driver more than once. The energy reservoir circuit can act as an intermediate interface between the RD laser diode driver and the power supply circuit to better optimize the current requirements of each block.
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Patent Agency Ranking
公开(公告)号：US20190219394A1
公开(公告)日：2019-07-18
申请号：US15869163
申请日：2018-01-12
Applicant: Analog Devices, Inc.
Inventor： James Lin , Ronald A. Kapusta, JR. , Lijun Gao
Abstract: Circuits and methods for compensating microelectromechanical system (MEMS) gyroscopes for quality factor variations are described. Quality factor variations arise when mechanical losses are introduced in the gyroscope's resonator, for example due to thermoelastic damping or squeeze-film damping, which may hinder the gyroscope's ability to accurately sense angular velocity. Quality factor compensation may be performed by generating a compensation signal having a time decay rate that depends on the quality factor of resonator. In this way, artifacts that may otherwise arise in gyroscope's output are limited. Additionally, or alternatively, quality factor compensation may be performed by controlling the force with which the gyroscope's resonator is driven. This may be achieved, for example, by controlling the average value of the drive signal.
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公开(公告)号：US20220382307A1
公开(公告)日：2022-12-01
申请号：US17827145
申请日：2022-05-27
Applicant: Analog Devices, Inc.
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.
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公开(公告)号：US10578435B2
公开(公告)日：2020-03-03
申请号：US15869163
申请日：2018-01-12
Applicant: Analog Devices, Inc.
Inventor： James Lin , Ronald A. Kapusta, Jr. , Lijun Gao
Abstract: Circuits and methods for compensating microelectromechanical system (MEMS) gyroscopes for quality factor variations are described. Quality factor variations arise when mechanical losses are introduced in the gyroscope's resonator, for example due to thermoelastic damping or squeeze-film damping, which may hinder the gyroscope's ability to accurately sense angular velocity. Quality factor compensation may be performed by generating a compensation signal having a time decay rate that depends on the quality factor of resonator. In this way, artifacts that may otherwise arise in gyroscope's output are limited. Additionally, or alternatively, quality factor compensation may be performed by controlling the force with which the gyroscope's resonator is driven. This may be achieved, for example, by controlling the average value of the drive signal.
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公开(公告)号：US20160298963A1
公开(公告)日：2016-10-13
申请号：US15092943
申请日：2016-04-07
Applicant: Analog Devices, Inc.
Inventor： Ronald Alan Kapusta , Jiefeng Yan , James Lin
CPC classification number: G01C19/5776
Abstract: Various embodiments provide methods of determining the quality factor of a resonating body in ways that are advantageous over previously known methods. For example, embodiments allow the determination of the quality factors of a resonating body without preventing the simultaneous use of the resonating body. For micromachined (“MEMS”) devices, embodiments allow the determination of the quality factors of a resonating body in a manner that is not dependent on transduction parameters of the MEMS device.
Abstract translation: 各种实施例提供了以相对于先前已知的方法有利的方式来确定谐振体的质量因子的方法。 例如，实施例允许确定谐振体的质量因子而不阻止共振体的同时使用。 对于微加工（“MEMS”）器件，实施例允许以不依赖于MEMS器件的转导参数的方式来确定谐振体的质量因子。
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公开(公告)号：US10309782B2
公开(公告)日：2019-06-04
申请号：US15092943
申请日：2016-04-07
Applicant: Analog Devices, Inc.
Inventor： Ronald A. Kapusta , Jiefeng Yan , James Lin
IPC: G01C19/5776 , G01C19/56
Abstract: Various embodiments provide methods of determining the quality factor of a resonating body in ways that are advantageous over previously known methods. For example, embodiments allow the determination of the quality factors of a resonating body without preventing the simultaneous use of the resonating body. For micromachined (“MEMS”) devices, embodiments allow the determination of the quality factors of a resonating body in a manner that is not dependent on transduction parameters of the MEMS device.
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