Patents by Inventor Colin G. Lyden
Colin G. Lyden 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: 8853799Abstract: Embodiments of the present invention provide an integrated circuit system including a first active layer fabricated on a front side of a semiconductor die and a second pre-fabricated layer on a back side of the semiconductor die and having electrical components embodied therein, wherein the electrical components include at least one discrete passive component. The integrated circuit system also includes at least one electrical path coupling the first active layer and the second pre-fabricated layer.Type: GrantFiled: September 30, 2013Date of Patent: October 7, 2014Assignee: Analog Devices, Inc.Inventors: Alan J. O'Donnell, Santiago Iriarte, Mark J. Murphy, Colin G. Lyden, Gary Casey, Eoin Edward English
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Publication number: 20140253237Abstract: An amplifier, comprising: an input node; an output node; a gain stage having a gain stage inverting input, a gain stage non-inverting input and a gain stage output; a feedback capacitor connected in a signal path between the gain stage output and the gain stage inverting input; a sampling capacitor connected between the input node and the gain stage non-inverting input, and a controllable impedance in parallel with the feedback capacitor, wherein the controllable impedance is operable to switch between a first impedance state in which it does not affect current flow through the feedback capacitor, and a second impedance state in which it cooperates with the feedback capacitor form a bandwidth limiting circuit.Type: ApplicationFiled: March 6, 2013Publication date: September 11, 2014Applicant: Analog Devices TechnologyInventors: Colin G. Lyden, Christopher Peter Hurrell, Derek Hummerston
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Patent number: 8824626Abstract: A detector circuit can include an integrator having an amplifier, a first feedback capacitor connected between an input and output of the amplifier, one or more additional feedback capacitors connected by at least one switch between the input and output of the amplifier, and a shunt capacitor connected to the output of the amplifier. The shunt capacitor can be selected to have a capacitance value greater than that of a minimum but less than that of a maximum feedback capacitance. The detector circuit can further include a sampling circuit having a sampling capacitor connected to the output of the integrator amplifier through at least one switch, wherein the sampling capacitor is separate from the shunt capacitor. A computed tomography imaging apparatus can include the detector circuit.Type: GrantFiled: June 11, 2012Date of Patent: September 2, 2014Assignee: Analog Devices, Inc.Inventors: Michael Coln, Paraic Brannick, Colin G. Lyden, Cathal Murphy
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Publication number: 20140217945Abstract: A method and apparatus for automatic resonance detection is disclosed for a motor-driven mechanical system such as a voice coil motor (VCM) in which a resonance detector and driver are provided. The automatic resonance detector may be implemented on the same integrated circuit as the driver, and dynamically determines the natural resonant frequency of the VCM driven by the driver. The resonant frequency is determined by measuring the back electromotive force (BEMF) of the VCM, detecting the slope of the BEMF signal, and determining the resonant frequency from the slope of the BEMF signal.Type: ApplicationFiled: February 6, 2013Publication date: August 7, 2014Applicant: Analog Devices TechnologyInventors: Alan Patrick Cahill, Gary Casey, John A. Cleary, Eoin Edward English, Christian Jimenez, Javier Calpe Maravilla, Colin G. Lyden, Thomas F. Roche
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Patent number: 8791754Abstract: A programmable gain amplifier (“PGA”) may include a differential amplifier, a pair of input capacitors, a pair of feedback capacitors provided in feedback configuration about the amplifier, a first chop circuit, provided at an input of the PGA and an output of the PGA and a second chop circuit provided at an output of the PGA. The PGA also may include circuit systems to sample voltages across the input capacitors in a sampling phase. The sampled voltages may correspond to a difference between a common mode voltage of input signals to the PGA and a common mode voltage of the differential amplifier. The sampled voltage, thus, defines a common mode voltage at the amplifier's inputs during other phases of operation, when the chop circuits are operational.Type: GrantFiled: August 22, 2012Date of Patent: July 29, 2014Assignee: Analog Devices, Inc.Inventors: Colin G. Lyden, Roberto S. Maurino, Damien J. McCartney
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Patent number: 8766836Abstract: A sigma delta modulator may include a loop filter and an adder configured to accept an output of the loop filter and a dither input signal. The adder may be further configured to combine the output of the loop filter and the dither input signal into a combined output signal. The sigma delta modulator may further include a quantizer configured to accept the combined output signal from the adder, and quantize the combined signal into a quantizer output signal. The sigma delta modulator may further include a first subtractor configured to accept the quantizer output signal and subtract the dither input signal from the quantizer output signal.Type: GrantFiled: December 14, 2012Date of Patent: July 1, 2014Assignee: Analog Devices, Inc.Inventors: Roberto S. Maurino, Colin G. Lyden
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Publication number: 20140175600Abstract: Embodiments of the present invention provide an integrated circuit system including a first active layer fabricated on a front side of a semiconductor die and a second pre-fabricated layer on a back side of the semiconductor die and having electrical components embodied therein, wherein the electrical components include at least one discrete passive component. The integrated circuit system also includes at least one electrical path coupling the first active layer and the second pre-fabricated layer.Type: ApplicationFiled: February 25, 2014Publication date: June 26, 2014Applicant: Analog Devices, Inc.Inventors: Alan J. O'DONNELL, Santiago IRIARTE, Mark J. MURPHY, Colin G. LYDEN, Gary CASEY, Eoin Edward ENGLISH
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Publication number: 20140175524Abstract: Embodiments of the present invention provide an integrated circuit system including a first active layer fabricated on a front side of a semiconductor die and a second pre-fabricated layer on a back side of the semiconductor die and having electrical components embodied therein, wherein the electrical components include at least one discrete passive component. The integrated circuit system also includes at least one electrical path coupling the first active layer and the second pre-fabricated layer.Type: ApplicationFiled: February 25, 2014Publication date: June 26, 2014Applicant: ANALOG DEVICES, INC.Inventors: Alan J. O'DONNELL, Santiago IRIARTE, Mark J. MURPHY, Colin G. LYDEN, Gary CASEY, Eoin Edward ENGLISH
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Publication number: 20140035630Abstract: Embodiments of the present invention provide an integrated circuit system including a first active layer fabricated on a front side of a semiconductor die and a second pre-fabricated layer on a back side of the semiconductor die and having electrical components embodied therein, wherein the electrical components include at least one discrete passive component. The integrated circuit system also includes at least one electrical path coupling the first active layer and the second pre-fabricated layer.Type: ApplicationFiled: September 30, 2013Publication date: February 6, 2014Applicant: ANALOG DEVICES, INC.Inventors: Alan J. O'DONNELL, Santiago IRIARTE, Mark J. MURPHY, Colin G. LYDEN, Gary CASEY, Eoin Edward ENGLISH
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Publication number: 20140034104Abstract: Embodiments of the present invention provide an integrated circuit system including a first active layer fabricated on a front side of a semiconductor die and a second pre-fabricated layer on a back side of the semiconductor die and having electrical components embodied therein, wherein the electrical components include at least one discrete passive component. The integrated circuit system also includes at least one electrical path coupling the first active layer and the second pre-fabricated layer.Type: ApplicationFiled: September 30, 2013Publication date: February 6, 2014Applicant: Analog Devices, Inc.Inventors: Alan J. O'DONNELL, Santiago IRIARTE, Mark J. MURPHY, Colin G. LYDEN, Gary CASEY, Eoin Edward ENGLISH
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Publication number: 20140026649Abstract: Embodiments of the present invention provide an integrated circuit system including a first active layer fabricated on a front side of a semiconductor die and a second pre-fabricated layer on a back side of the semiconductor die and having electrical components embodied therein, wherein the electrical components include at least one discrete passive component. The integrated circuit system also includes at least one electrical path coupling the first active layer and the second pre-fabricated layer.Type: ApplicationFiled: September 30, 2013Publication date: January 30, 2014Applicant: ANALOG DEVICES, INC.Inventors: Alan J. O'DONNELL, Santiago IRIARTE, Mark J. MURPHY, Colin G. LYDEN, Gary CASEY, Eoin Edward ENGLISH
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Publication number: 20130329853Abstract: A detector circuit can include an integrator having an amplifier, a first feedback capacitor connected between an input and output of the amplifier, one or more additional feedback capacitors connected by at least one switch between the input and output of the amplifier, and a shunt capacitor connected to the output of the amplifier. The shunt capacitor can be selected to have a capacitance value greater than that of a minimum but less than that of a maximum feedback capacitance. The detector circuit can further include a sampling circuit having a sampling capacitor connected to the output of the integrator amplifier through at least one switch, wherein the sampling capacitor is separate from the shunt capacitor. A computed tomography imaging apparatus can include the detector circuit.Type: ApplicationFiled: June 11, 2012Publication date: December 12, 2013Applicant: ANALOG DEVICES, INC.Inventors: Michael COLN, Paraic BRANNICK, Colin G. LYDEN, Cathal MURPHY
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Publication number: 20130293294Abstract: A programmable gain amplifier (“PGA”) may include a differential amplifier, a pair of input capacitors, a pair of feedback capacitors provided in feedback configuration about the amplifier, a first chop circuit, provided at an input of the PGA and an output of the PGA and a second chop circuit provided at an output of the PGA. The PGA also may include circuit systems to sample voltages across the input capacitors in a sampling phase. The sampled voltages may correspond to a difference between a common mode voltage of input signals to the PGA and a common mode voltage of the differential amplifier. The sampled voltage, thus, defines a common mode voltage at the amplifier's inputs during other phases of operation, when the chop circuits are operational.Type: ApplicationFiled: August 22, 2012Publication date: November 7, 2013Applicant: ANALOG DEVICES, INC.Inventors: Colin G. LYDEN, Roberto S. MAURINO, Damien J. MCCARTNEY
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Publication number: 20130207820Abstract: A sigma delta modulator may include a loop filter and an adder configured to accept an output of the loop filter and a dither input signal. The adder may be further configured to combine the output of the loop filter and the dither input signal into a combined output signal. The sigma delta modulator may further include a quantizer configured to accept the combined output signal from the adder, and quantize the combined signal into a quantizer output signal. The sigma delta modulator may further include a first subtractor configured to accept the quantizer output signal and subtract the dither input signal from the quantizer output signal.Type: ApplicationFiled: December 14, 2012Publication date: August 15, 2013Inventors: Roberto S. MAURINO, Colin G. LYDEN
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Patent number: 7944386Abstract: An analog to digital converter, comprising a first converter adapted to perform a first, more significant, part of a conversion as a successive approximation conversion, a pipeline conversion or a flash conversion to generate a first conversion result and a residue. The ADC also comprising a second converter adapted to perform a second, least significant, part of the conversion as a sigma-delta conversion by sampling the residue to generate a second conversion result, and a processor adapted to combine the first conversion result and the second conversion result to generate a final conversion result.Type: GrantFiled: October 21, 2008Date of Patent: May 17, 2011Assignee: Analog Devices, Inc.Inventors: Christopher Peter Hurrell, Colin G Lyden
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Patent number: 7936297Abstract: An analog to digital converter comprising an Nth analog to digital converter and an N+1th analog to digital converter arranged in series such that a residue signal from the Nth analog to digital converter is provided as an input to the N+1th analog to digital converter, characterized in that a bandwidth control means is provided in a signal path for the residue signal and the bandwidth control means is controlled so as to have a first bandwidth during a first period following generation of a conversion result from the Nth analog to digital converter, and a second bandwidth less than the first bandwidth in a second period following the first period.Type: GrantFiled: August 3, 2009Date of Patent: May 3, 2011Assignee: Analog Devices, Inc.Inventors: Christopher Peter Hurrell, Colin G Lyden, Ronald A. Kapusta
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Patent number: 7795960Abstract: A low power, low noise amplifier system includes at least one amplifier having first and second differential input terminals, first and second differential output terminals and providing a differential output; first and second input capacitors interconnected with the first and second differential amplifier input terminals; first and second feedback circuits containing first and second feedback capacitors, respectively, interconnected with the amplifier differential input and output terminals; an input chopper switch circuit for receiving a low frequency differential input and selectively, alternately swapping those low frequency differential inputs through the input capacitors to the differential input terminals of the amplifier; an output chopper switch for receiving and selectively, alternately swapping the amplifier differential outputs synchronously with the input chopper switch circuit; and a low pass filter responsive to the swapped differential outputs for providing a low noise, low power amplificationType: GrantFiled: September 12, 2008Date of Patent: September 14, 2010Assignee: Analog Devices, Inc.Inventors: Colin G. Lyden, Christian S. Birk, Tomas Tansley
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Publication number: 20100176979Abstract: An analog to digital converter comprising an Nth analog to digital converter and an N+1th analog to digital converter arranged in series such that a residue signal from the Nth analog to digital converter is provided as an input to the N+1th analog to digital converter, characterised in that a bandwidth control means is provided in a signal path for the residue signal and the bandwidth control means is controlled so as to have a first bandwidth during a first period following generation of a conversion result from the Nth analog to digital converter, and a second bandwidth less than the first bandwidth in a second period following the first period.Type: ApplicationFiled: August 3, 2009Publication date: July 15, 2010Applicant: ANALOG DEVICES, INC.Inventors: Christopher Peter HURRELL, Colin G. LYDEN, Ronald A. KAPUSTA
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Publication number: 20100097256Abstract: An analog to digital converter adapted to perform a first, more significant, part of a conversion as a successive approximation conversion, a pipeline conversion or a flash conversion and a second, least significant, part of a conversion as a sigma-delta conversion.Type: ApplicationFiled: October 21, 2008Publication date: April 22, 2010Applicant: ANALOG DEVICES, INCInventors: Christopher Peter HURRELL, Colin G. LYDEN
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Publication number: 20090115522Abstract: A low power, low noise amplifier system includes at least one amplifier having first and second differential input terminals, first and second differential output terminals and providing a differential output; first and second input capacitors interconnected with the first and second differential amplifier input terminals; first and second feedback circuits containing first and second feedback capacitors, respectively, interconnected with the amplifier differential input and output terminals; an input chopper switch circuit for receiving a low frequency differential input and selectively, alternately swapping those low frequency differential inputs through the input capacitors to the differential input terminals of the amplifier; an output chopper switch for receiving and selectively, alternately swapping the amplifier differential outputs synchronously with the input chopper switch circuit; and a low pass filter responsive to the swapped differential outputs for providing a low noise, low power amplificationType: ApplicationFiled: September 12, 2008Publication date: May 7, 2009Inventors: Colin G. Lyden, Christian S. Birk, Tomas Tansley