Patents by Inventor John Jude O'Donnell
John Jude O'Donnell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11686747Abstract: The disclosure relates to accurately determining a DC energy signal, such as a DC current or DC voltage, which may be particularly useful when controlling a formation/testing current of a battery cell during formation and/or testing. In the battery formation/testing context, a current sensor is used to measure the current of the battery cell, which is used as a feedback signal for controlling the current to achieve a target current. The transfer function of the current sensor is used to improve the accuracy of the current measurement. Because the transfer function can be regularly determined during formation/testing, a lower-cost current sensor with relatively poor temperature coefficient may be used. Any change in the gain of the current sensor may be detected by the transfer function determination and corrected for. Therefore, high current control accuracy may be achieved at lower cost.Type: GrantFiled: September 23, 2021Date of Patent: June 27, 2023Assignee: Analog Devices International Unlimited CompanyInventors: Shaoli Ye, Gina M Kelso, David J. Lath, William Michael James Holland, John Jude O'Donnell
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Patent number: 11435404Abstract: Techniques for controlling a current of a battery cell during formation and/or testing are described. A current sensor is used to measure the current of the battery cell, which is used as a feedback signal for controlling the current to achieve a target current. The transfer function of the current sensor is used to improve the accuracy of the current measurement. Because the transfer function can be regularly determined during formation/testing, a lower-cost current sensor with relatively poor temperature coefficient may be used. Any change in the gain of the current sensor may be detected by the transfer function determination and corrected for. Therefore, high current control accuracy may be achieved at lower cost.Type: GrantFiled: September 28, 2020Date of Patent: September 6, 2022Assignee: Analog Devices International Unlimited CompanyInventors: Shaoli Ye, Gina M Kelso, David J. Lath, William Michael James Holland, John Jude O'Donnell
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Publication number: 20220099714Abstract: The disclosure relates to accurately determining a DC energy signal, such as a DC current or DC voltage, which may be particularly useful when controlling a formation/testing current of a battery cell during formation and/or testing. In the battery formation/testing context, a current sensor is used to measure the current of the battery cell, which is used as a feedback signal for controlling the current to achieve a target current. The transfer function of the current sensor is used to improve the accuracy of the current measurement. Because the transfer function can be regularly determined during formation/testing, a lower-cost current sensor with relatively poor temperature coefficient may be used. Any change in the gain of the current sensor may be detected by the transfer function determination and corrected for. Therefore, high current control accuracy may be achieved at lower cost.Type: ApplicationFiled: September 23, 2021Publication date: March 31, 2022Inventors: Shaoli Ye, Gina M Kelso, David J. Lath, Wlliam Michael James Holland, John Jude O' Donnell
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Publication number: 20220099748Abstract: Techniques for controlling a current of a battery cell during formation and/or testing are described. A current sensor is used to measure the current of the battery cell, which is used as a feedback signal for controlling the current to achieve a target current. The transfer function of the current sensor is used to improve the accuracy of the current measurement. Because the transfer function can be regularly determined during formation/testing, a lower-cost current sensor with relatively poor temperature coefficient may be used. Any change in the gain of the current sensor may be detected by the transfer function determination and corrected for. Therefore, high current control accuracy may be achieved at lower cost.Type: ApplicationFiled: September 28, 2020Publication date: March 31, 2022Inventors: Shaoli Ye, Gina M. Kelso, David J. Lath, William Michael James Holland, John Jude O'Donnell
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Patent number: 10862436Abstract: Techniques for improving noise performance while processing signals received from an electrochemical sensor are provided. In an example, an interface circuit can include a first amplifier configured to provide a voltage to a counter electrode of an electrochemical sensor, a second amplifier configured to receive sensor information from a working electrode of the electrochemical sensor and to provide concentration information using the sensor information. In certain examples, an input of the first amplifier can be directly coupled to an input of the second amplifier to attenuate noise, of either the first amplifier or the second amplifier, within the concentration information provided by the second amplifier.Type: GrantFiled: May 4, 2017Date of Patent: December 8, 2020Assignee: Analog Devices International Unlimited CompanyInventors: Hanqing Wang, John Jude O'Donnell
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Publication number: 20200245915Abstract: A photometry device can include a first to emit light to a target in response to a first current through the first LED, a second LED to emit light to the target in response to a second current through the second LED, and an inductor, coupled to the first and second LEDs, to store energy associated with at least one of the first and second currents.Type: ApplicationFiled: April 21, 2020Publication date: August 6, 2020Inventors: John Jude O'Donnell, Colin G. Lyden, Michael C.W. Coln
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Publication number: 20200091923Abstract: The present disclosure relates to a digital-to-analog converter (DAC) which includes a resistor string and a transfer function modification circuit. The transfer function modification circuit may be a calibration circuit for calibrating the DAC, The calibration circuit may include a plurality of current sources, which may be current DACs. Each of the current DACS inject current into, or drain current from, a respective node of the resistor string, in order to correct for voltage errors. The injected currents may be positive or negative, depending on the voltage error. The current DACs are controlled by trim codes, which are set dependent on the measured or simulated voltage errors for a given resistor string.Type: ApplicationFiled: September 14, 2018Publication date: March 19, 2020Inventors: Junbiao Ding, Tony Yincai Liu, Dennis A. Dempsey, John Jude O'Donnell
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Patent number: 10582887Abstract: A blood oxygenation sensor is provided comprising: a first current-powered light source to produce light having a first wavelength; a second current-powered light source to produce light having a second wavelength; a light sensor to produce a current signal having a magnitude that is indicative of intensity of light incident upon it; a current level driver circuit that includes a current source configured to couple the current source to alternatively provide current to one of the first current-powered light source and the second light current-powered light source; a processor configured to predict times of occurrence of one or more first time intervals in which arterial volume at a tissue site is at one of a maximum and a minimum; wherein the processor is configured to control the current source, to provide a first pattern of higher power-dissipation current pulses to the first and second current-powered light sources during the first time intervals, and to provide a second pattern of lower power-dissipationType: GrantFiled: March 17, 2016Date of Patent: March 10, 2020Assignee: Analog Devices GlobalInventors: John Jude O'Donnell, Javier Calpe Maravilla, Colin G. Lyden, Thomas G. O'Dwyer
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Patent number: 10574247Abstract: The present disclosure relates to a digital-to-analog converter (DAC) which includes a resistor string and a transfer function modification circuit. The transfer function modification circuit may be a calibration circuit for calibrating the DAC, The calibration circuit may include a plurality of current sources, which may be current DACs. Each of the current DACS inject current into, or drain current from, a respective node of the resistor string, in order to correct for voltage errors. The injected currents may be positive or negative, depending on the voltage error. The current DACs are controlled by trim codes, which are set dependent on the measured or simulated voltage errors for a given resistor string.Type: GrantFiled: September 14, 2018Date of Patent: February 25, 2020Assignee: Analog Devices Global Unlimited CompanyInventors: Junbiao Ding, Tony Yincai Liu, Dennis A. Dempsey, John Jude O'Donnell
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Patent number: 10461151Abstract: An integrated circuit may include a semiconductor die having a trench formed in a surface of the semiconductor die. One or more circuit components may be formed on the surface of the semiconductor die. The trench can extend into the semiconductor die next to at least one circuit component. The trench may surround the circuit component partially or wholly. The trench may be filled with a material having a lower bulk modulus than the semiconductor die in which the trench is formed.Type: GrantFiled: October 7, 2016Date of Patent: October 29, 2019Assignee: Analog Devices GlobalInventors: Patrick F. M. Poucher, Padraig L. Fitzgerald, John Jude O'Donnell, Oliver J. Kierse, Denis M. O'Connor
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Publication number: 20180360359Abstract: A photometry device can include a first LED to emit light to a target in response to a first current through the first LED, a second LED to emit light to the target in response to a second current through the second LED, and an inductor, coupled to the first and second LEDs, to store energy associated with at least one of the first and second currents.Type: ApplicationFiled: June 14, 2017Publication date: December 20, 2018Inventors: John Jude O'Donnell, Colin G. Lyden, Michael C.W. Coln
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Publication number: 20180323750Abstract: Techniques for improving noise performance while processing signals received from an electrochemical sensor are provided. In an example, an interface circuit can include a first amplifier configured to provide a voltage to a counter electrode of an electrochemical sensor, a second amplifier configured to receive sensor information from a working electrode of the electrochemical sensor and to provide concentration information using the sensor information. In certain examples, an input of the first amplifier can be directly coupled to an input of the second amplifier to attenuate noise, of either the first amplifier or the second amplifier, within the concentration information provided by the second amplifier.Type: ApplicationFiled: May 4, 2017Publication date: November 8, 2018Inventors: Hanqing Wang, John Jude O'Donnell
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Publication number: 20180190549Abstract: A semiconductor wafer is provided that includes at least two integrated circuits (ICs); a scribe line extends adjacent to the at least two ICs; and a first conductor extends within the scribe line and is electrically coupled to the at least two ICs.Type: ApplicationFiled: December 30, 2016Publication date: July 5, 2018Inventors: John Jude O'Donnell, Colin G. Lyden, Shane Geary, Jonathan Ephraim David Hurwitz, Brian Beucler
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Publication number: 20170265794Abstract: A blood oxygenation sensor is provided comprising: a first current-powered light source to produce light having a first wavelength; a second current-powered light source to produce light having a second wavelength; a light sensor to produce a current signal having a magnitude that is indicative of intensity of light incident upon it; a current level driver circuit that includes a current source configured to couple the current source to alternatively provide current to one of the first current-powered light source and the second light current-powered light source; a processor configured to predict times of occurrence of one or more first time intervals in which arterial volume at a tissue site is at one of a maximum and a minimum; wherein the processor is configured to control the current source, to provide a first pattern of higher power-dissipation current pulses to the first and second current-powered light sources during the first time intervals, and to provide a second pattern of lower power-dissipationType: ApplicationFiled: March 17, 2016Publication date: September 21, 2017Inventors: John Jude O'Donnell, Javier Calpe Maravilla, Colin G. Lyden, Thomas G. O'Dwyer
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Publication number: 20170102355Abstract: It may be desirable to sense the concentration of a gas in another gas. This measurement may be important to warn of impending danger. Gas sensors may be made in batches by a manual process, leading to large variations in sensor performance between batches and indeed between sensors in a batch. This means the sensors often need individual calibration before use. The present approach to sensor design can make use of integrated circuit manufacturing techniques to give rise to sensors with well-matched and reproducible characteristics.Type: ApplicationFiled: October 9, 2015Publication date: April 13, 2017Inventors: Patrick M. McGuinness, Seamus P. Whiston, William A. Lane, Thomas G. O'Dwyer, John Jude O'Donnell, Bernard Stenson, Shane Geary, Helen Berney, Raymond J. Speer
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Publication number: 20170025497Abstract: An integrated circuit may include a semiconductor die having a trench formed in a surface of the semiconductor die. One or more circuit components may be formed on the surface of the semiconductor die. The trench can extend into the semiconductor die next to at least one circuit component. The trench may surround the circuit component partially or wholly. The trench may be filled with a material having a lower bulk modulus than the semiconductor die in which the trench is formed.Type: ApplicationFiled: October 7, 2016Publication date: January 26, 2017Inventors: Patrick F.M. Poucher, Padraig L. Fitzgerald, John Jude O'Donnell, Oliver J. Kierse, Denis M. O'Connor
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Patent number: 9466666Abstract: An integrated circuit may include a semiconductor die having a trench formed in a surface of the semiconductor die. One or more circuit components may be formed on the surface of the semiconductor die. The trench can extend into the semiconductor die next to at least one circuit component. The trench may surround the circuit component partially or wholly. The trench may be filled with a material having a lower bulk modulus than the semiconductor die in which the trench is formed.Type: GrantFiled: January 14, 2013Date of Patent: October 11, 2016Assignee: ANALOG DEVICES GLOBALInventors: Patrick F. M. Poucher, Padraig L. Fitzgerald, John Jude O'Donnell, Oliver J. Kierse, Denis M. O'Connor
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Patent number: 9203350Abstract: An example transconductance circuit is provided in accordance with one embodiment. The transconductance circuit can comprise: an output node; at least one transistor; a variable resistance; and a differential amplifier; wherein the at least one transistor and the variable resistance are in series connection with the output node, an output of the differential amplifier is connected to a control node of the at least one transistor, a first input of the amplifier is responsive to an input signal, and a second input of the amplifier is responsive to a voltage across the variable resistance. Such a circuit may overcome noise problems in transconductance circuits which operate over a wide range of input signals with a fixed resistor in series with the at least one transistor.Type: GrantFiled: February 20, 2014Date of Patent: December 1, 2015Assignee: ANALOG DEVICES GLOBALInventors: Dennis A. Dempsey, Sean Brennan, Colin Lyden, John Jude O'Donnell
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Publication number: 20140340150Abstract: An example transconductance circuit is provided in accordance with one embodiment. The transconductance circuit can comprise: an output node; at least one transistor; a variable resistance; and a differential amplifier; wherein the at least one transistor and the variable resistance are in series connection with the output node, an output of the differential amplifier is connected to a control node of the at least one transistor, a first input of the amplifier is responsive to an input signal, and a second input of the amplifier is responsive to a voltage across the variable resistance. Such a circuit may overcome noise problems in transconductance circuits which operate over a wide range of input signals with a fixed resistor in series with the at least one transistor.Type: ApplicationFiled: February 20, 2014Publication date: November 20, 2014Applicant: ANALOG DEVICES TECHNOLOGYInventors: Dennis A. Dempsey, Sean Brennan, Colin Lyden, John Jude O'Donnell
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Publication number: 20130292793Abstract: An integrated circuit may include a semiconductor die having a trench formed in a surface of the semiconductor die. One or more circuit components may be formed on the surface of the semiconductor die. The trench can extend into the semiconductor die next to at least one circuit component. The trench may surround the circuit component partially or wholly. The trench may be filled with a material having a lower bulk modulus than the semiconductor die in which the trench is formed.Type: ApplicationFiled: January 14, 2013Publication date: November 7, 2013Applicant: ANALOG DEVICES TECHNOLOGYInventors: Patrick F. M. POUCHER, Padraig L. FITZGERALD, John Jude O'DONNELL, Oliver J. KIERSE, Denis M. O'CONNOR