Patents Assigned to Analog Devices, Inc.
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Patent number: 8525299Abstract: A semiconductor device formed on a substrate includes a first diode junction formation, a second diode junction formation, and at least one through-silicon-via (TSV), in which a cathode and an anode of the first diode are cross-connected to an anode and cathode of the second diode through the at least one TSV for achieving electrical robustness in through-silicon-via based integrated circuits, including photosensitive devices and circuits for signal processing applications.Type: GrantFiled: March 6, 2013Date of Patent: September 3, 2013Assignee: Analog Devices, Inc.Inventors: Lejun Hu, Srivatsan Parthasarathy, Michael Coln, Javier Salcedo
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Publication number: 20130221405Abstract: Apparatus and methods for electronic circuit protection are disclosed. In one embodiment, an apparatus comprises a well having an emitter and a collector region. The well has a doping of a first type, and the emitter and collector regions have a doping of a second type. The emitter region, well, and collector region are configured to operate as an emitter, base, and collector for a first transistor, respectively. The collector region is spaced away from the emitter region to define a spacing. A first spacer and a second spacer are positioned adjacent the well between the emitter and the collector. A conductive plate is positioned adjacent the well and between the first spacer and the second spacer, and a doping adjacent the first spacer, the second spacer, and the plate consists essentially of the first type.Type: ApplicationFiled: March 28, 2013Publication date: August 29, 2013Applicant: Analog Devices, Inc.Inventor: Analog Devices, Inc.
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Publication number: 20130221468Abstract: A compact sensor module and methods for forming the same are disclosed herein. In some embodiments, a sensor die is mounted on a sensor substrate. A processor die can be mounted on a flexible processor substrate. In some arrangements, a thermally insulating stiffener can be disposed between the sensor substrate and the flexible processor substrate.Type: ApplicationFiled: February 27, 2012Publication date: August 29, 2013Applicant: ANALOG DEVICES, INC.Inventor: David Frank Bolognia
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Publication number: 20130222022Abstract: Techniques to compensate for sources of temperature and process dependent errors within an oscillator system for frequency control oscillator output clock signal. The oscillator system may include a controller and an oscillator circuit. The techniques may include generating a pair of voltages, a first of which is temperature variant, having (approximately) known temperature variations across process, and a second of which is (approximately) temperature invariant. Each voltage may be scaled by a corresponding trim factor. The scaled voltages may be combined to generate a reference voltage. The reference voltage may compensate for process and temperature dependent error sources within the oscillator system to set the oscillator output clock signal frequency.Type: ApplicationFiled: June 26, 2012Publication date: August 29, 2013Applicant: Analog Devices, Inc.Inventor: Bhargav R. VYAS
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Publication number: 20130222961Abstract: Apparatuses and methods for providing transient electrical event protection are disclosed. In one embodiment, an apparatus comprises a detection and timing circuit, a current amplification circuit, and a clamping circuit. The detection and timing circuit is configured to detect a presence or absence of a transient electrical event at a first node, and to generate a first current for a first duration upon detection of the transient electrical event. The current amplification circuit is configured to receive the first current from the detection and timing circuit and to amplify the first current to generate a second current. The clamping circuit is electrically connected between the first node and a second node and receives the second current for activation. The clamping circuit is configured to activate a low impedance path between the first and second nodes in response to the second current, and to otherwise deactivate the low impedance path.Type: ApplicationFiled: April 15, 2013Publication date: August 29, 2013Applicant: Analog Devices, Inc.Inventor: Analog Devices, Inc.
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Patent number: 8520671Abstract: A system and method transmits graphic data received at varying frequencies at a fixed data rate. The frequency dependent data and associated data clock signal are received and the frequency dependent data is converted to frequency independent data. A ratio of a number of data clock cycles to a number of reference clock cycles is determined and transmitted. The frequency independent data and header data are transmitted, at a fixed rate, to a receiver, the fixed rate being a frequency greater than the frequency of the associated data clock signal. The received the frequency independent data is converted to frequency dependent data based upon the received determined ratio. The communication channel may include an optical fiber and a tension member wherein control data is transmitted along the tension member and graphic data is transmitted along the optical fiber.Type: GrantFiled: February 3, 2010Date of Patent: August 27, 2013Assignee: Analog Devices, Inc.Inventors: Rod Miller, Tyre Paul Lanier
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Patent number: 8519432Abstract: A semiconductor switch comprises a PNPN structure arranged to provide an SCR-like functionality, and a MOS gate structure, preferably integrated on a common substrate. The switch includes ohmic contacts for the MOS gate, and for the cathode and gate regions of the PNPN structure; the anode contact is intrinsic. A fixed voltage is typically applied to an external node. The MOS gate structure allows current to be conducted between the external node and the intrinsic anode when on, and the PNPN structure conducts the current from the anode to the cathode when an appropriate voltage is applied to the gate contact. Regenerative feedback keeps the switch on once it begins to conduct. The MOS gate inhibits the flow of current between the external node and anode—and thereby turns off the switch—when off. When on, the MOS gate's channel resistance serves as a ballast resistor.Type: GrantFiled: March 27, 2008Date of Patent: August 27, 2013Assignee: Analog Devices, Inc.Inventors: Jeffrey G. Barrow, Javier A. Salcedo, A. Paul Brokaw
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Patent number: 8519794Abstract: A current mirror circuit provided in an emitter follower configuration achieves linearly output over a range of input currents by operating in response to a bias current that is a replica of the input current. The current mirror may include a pair of transistors and a pair of resistors, in which: a first resistor and a base of a first transistor are coupled to a first input terminal for a first input current, an emitter of the first transistor and a base of the second transistor are coupled to a second input terminal for a second input current, the first and second input currents being replicas of each other, an emitter of the second transistor being coupled to the second resistor, a collector of the second transistor being coupled to an output terminal of the current mirror, and a collector of the first transistor and the two resistors are coupled to a common node.Type: GrantFiled: February 25, 2013Date of Patent: August 27, 2013Assignee: Analog Devices, Inc.Inventor: Sandro Herrera
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Patent number: 8520787Abstract: Apparatus and methods are disclosed, such as those involving deskewing serial data transmissions. One such apparatus includes a plurality of receivers, each of which is configured to receive a serial data stream. Each of the receivers includes a shift register including a plurality of stages arranged in sequence to propagate a stream of characters. Each of the stages is configured to store a character, and shift the character to a next stage in response to a clock signal. The receiver also includes a multiplexer having a plurality of inputs, each of the inputs being electrically coupled to a respective one of the stages of the shift register, and to select one of the stages to generate an output such that the outputs of the multiplexers in the receivers are deskewed.Type: GrantFiled: March 9, 2011Date of Patent: August 27, 2013Assignee: Analog Devices, Inc.Inventor: Michael Hennedy
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Patent number: 8516891Abstract: A MEMS sensing system includes a movable mass having at least one contact surface, a stopper system for stopping the movement of the mass, the stopper system having at least one contact surface that contacts a corresponding contact surface of the mass if a sufficient movement of the mass occurs in a direction, at least one stopper gap formed between the at least one contact surface of the stopper system and the corresponding contact surface of the mass, and a spring system in communication with the at least one stopper gap.Type: GrantFiled: January 16, 2008Date of Patent: August 27, 2013Assignee: Analog Devices, Inc.Inventors: Xin Zhang, Michael W. Judy
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Publication number: 20130218512Abstract: The invention may provide a temperature sensor device that includes an analog temperature sensor to generate a first base-emitter voltage and a second base-emitter voltage, and an analog-to-digital converter (ADC) to sample at the voltages and generate corresponding digital values. The temperature sensor device may also include a logic unit to calculate a digital temperature code from the digital values using a digital virtual reference.Type: ApplicationFiled: February 17, 2012Publication date: August 22, 2013Applicant: ANALOG DEVICES, INC.Inventors: Sejun KIM, Khiem Quang NGUYEN, Michael W. DETERMAN, Robert ADAMS
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Publication number: 20130214944Abstract: A switched-capacitor digital-to-analog converter (DAC) circuit can include first and second sets of capacitors, an amplifier, a reference signal generator and interconnecting switches. The first and second sets of capacitors can be connected to first and second analog input signals responsive to a first clock signal, and to first and second reference voltages responsive to a second clock signal and digital control signals. The amplifier can be connected to the first and second sets of capacitors in response to the second clock signal. The reference signal generator can provide to the first and second sets of capacitors, responsive to the first clock signal, a common-mode reference signal to set a common-mode voltage at inputs of the amplifier, and can include components to replicate the operation of the first and second sets of capacitors. The switched-capacitor DAC circuit can be used to implement a multiplying DAC in a pipeline analog-to-digital converter.Type: ApplicationFiled: February 17, 2012Publication date: August 22, 2013Applicant: ANALOG DEVICES, INC.Inventor: Stephen Robert KOSIC
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Publication number: 20130219245Abstract: An analog belief propagation system uses current mode implementations of storage elements and circuit implementations of at least some nodes of a factor graph using current representations. The system mitigates or avoids effects of non-linearities and approximations in storage and processing elements of the system, for instance, by using storage cells that reproduce current values and using factor circuits that separate control sections and signal path sections of the circuits.Type: ApplicationFiled: September 1, 2011Publication date: August 22, 2013Applicant: Analog Devices, Inc.Inventor: Alexander Alexeyev
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Patent number: 8514114Abstract: An uncalibrated converter element in an analog-digital converter may be replaced with two or more smaller elements having an effective total net value that is equal to that of the uncalibrated converter element. In an exemplary case where the element is capacitor, one or more of these smaller capacitors may be independently calibrated by switching the smaller capacitor between two voltages, such as a reference voltage and ground, and then calculating a difference of corresponding digital output codes generated by the backend ADC with previously calibrated capacitors associated with lesser significant bits. The total capacitance of the uncalibrated capacitor may be apportioned between the smaller capacitors so that the individual maximum charge contribution of each smaller capacitor to the converter output together with any expected manufacturing variance does not exceed the aggregated contribution of the previously calibrated capacitors.Type: GrantFiled: December 6, 2011Date of Patent: August 20, 2013Assignee: Analog Devices, Inc.Inventors: Ronald A. Kapusta, Junhua Shen
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Patent number: 8514014Abstract: An amplifier system can include a feedback amplifier circuit having an amplifier, a feedback capacitor connected between an input terminal and an output terminal of the amplifier by at least one first switch, and a reset capacitor connected across the feedback capacitor by at least one second switch and between a pair of reference voltages by at least one third switch. During an input-signal processing phase of operation, a control circuit may close the at least one first switch and open the at least one second switch to electrically connect the feedback capacitor between the input and output terminals to engage feedback processing by the feedback amplifier circuit, and close the third switch to electrically connect the reset capacitor between the first and second voltages to charge the reset capacitor to a selectable voltage difference.Type: GrantFiled: February 9, 2011Date of Patent: August 20, 2013Assignee: Analog Devices, Inc.Inventors: Cathal Murphy, Michael Coln, Gary Carreau, Alain Valentin Guery, Bruce Amazeen
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Patent number: 8514112Abstract: The invention provides a systematic error correction network coupled to a converter. The converter may display a systematic non-linearity error, and the systematic error correction network shapes a correction transform function that acts like counter distortion function for the non-linearity error. The systematic error correction network then scales the correction transform function according to a reference variable, where the magnitude of non-linearity error is related to the reference variable. The scaled correction transform function is then applied to the converter path in order to generate a corrected analog output signal.Type: GrantFiled: June 24, 2011Date of Patent: August 20, 2013Assignee: Analog Devices, Inc.Inventors: Roderick McLachlan, Michael Coln
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Patent number: 8515100Abstract: A semiconductor die with an integrated electronic circuit, configured so as to be mounted in a housing with a capacitive transducer e.g. a microphone. A first circuit is configured to receive an input signal from the transducer at an input node and to provide an output signal at a pad of the semiconductor die. The integrated electronic circuit comprises an active switch device with a control input, coupled to a pad of the semiconductor die, to operatively engage or disengage a second circuit interconnected with the first circuit so as to operate the integrated electronic circuit in a mode selected by the control input. That is, a programmable or controllable transducer. The second circuit is interconnected with the first circuit so as to be separate from the input node. Thereby less noise is induced, a more precise control of the circuit is obtainable and more advanced control options are possible.Type: GrantFiled: January 29, 2013Date of Patent: August 20, 2013Assignee: Analog Devices, Inc.Inventors: Mohammad Shajaan, Henrik Thomsen, Jens Jorge Gaarde Henriksen, Claus Erdmann Fuerst
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Patent number: 8515699Abstract: Embodiments of the present invention provide a monitoring system that may include a plurality of monitors. Each may have a plurality of input pairs coupled to respective components of a component stack, wherein adjacent monitors each have an input pair coupled to a common component. Embodiments of the present invention provide an integrated circuit that may include a plurality of detectors to locally measure a first group of channels. The integrated circuit may also include a receiver operable to receive a measurement of at least one channel of the first group of channels, and a controller to calculate a correction factor based on the received measurement and a local measurement of the at least one channel and to correct all first group measurements with the correction factor.Type: GrantFiled: November 5, 2009Date of Patent: August 20, 2013Assignee: Analog Devices, Inc.Inventors: Jeremy Richard Gorbold, Colin Charles Price, Michael C. W. Coln
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Patent number: 8513713Abstract: A junction field effect transistor having a drain and a source, each defined by regions of a first type of semiconductor interconnected by a channel, and in which a dopant profile at a side of the drain facing the channel is modified so as to provide a region of reduced doping compared to a body region of the drain. The region of reduced doping and the body region can be defined by the same mask and doping step, but the mask is shaped to provide a lesser amount and thus less depth of doping for the region of reduced doping.Type: GrantFiled: May 10, 2012Date of Patent: August 20, 2013Assignee: Analog Devices, Inc.Inventors: Paul Malachy Daly, Andrew David Bain, Derek Frederick Bowers, Anne Maria Deignan, Michael Thomas Dunbar, Patrick Martin McGuinness, Bernard Patrick Stenson, William Allan Lane
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Patent number: 8514006Abstract: A method and system that may include a pair of amplifier transistors and an output coupled to a load device. The precharge buffer may be controlled by an activation signal. The precharge buffer may also include a pair of level shifters. Each level shifter may be provided in association with a respective one of the transistors, and each may provide a respective level shift to an input signal at a common signal source based on a reference voltage. Outputs of the level shifters may be coupled to the respective transistors. The precharge buffer may also include a bypass signal path extending from the common signal source to the load device. A signal path may be controlled by another activation signal, and the precharge buffer and the bypass signal may be enabled during mutually exclusive states of the activation signal.Type: GrantFiled: May 25, 2011Date of Patent: August 20, 2013Assignee: Analog Devices, Inc.Inventors: Padraig Cooney, Colin Lyden