Patents Assigned to Analog Devices
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Publication number: 20130175861Abstract: Embodiments of the present invention provide a system and method for controlling a power down functionality for a component while limiting the number of inputs to the component. Embodiments may include a single input that may serve the dual purpose of providing both an input analog signal and a power down control. According to an embodiment, the power down threshold may be set as the defined minimum operating input voltage such that any input signals below the operating range may be interpreted as a power down command. Alternate signal ranges may be defined as indicating a power down command. According to an embodiment, an input signal having an improperly high voltage may additionally be interpreted as a power down or other predefined command such that any input signals outside of the predefined operating range may be interpreted as a power down command.Type: ApplicationFiled: January 6, 2012Publication date: July 11, 2013Applicant: ANALOG DEVICES, INC.Inventor: John WYNNE
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Publication number: 20130175669Abstract: 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: ApplicationFiled: March 6, 2013Publication date: July 11, 2013Applicant: Analog Devices, Inc.Inventors: Lejun HU, Srivatsan Parthasarathy, Michael COLN, Javier SALCEDO
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Publication number: 20130168839Abstract: Apparatuses are disclosed, such as those involving integrated circuit packaging. In one embodiment, a chip package includes: an encapsulation having a top surface and a bottom surface facing away from the top surface. The package further includes a leadframe including a plurality of leads. Each of the leads includes an exposed portion exposed through one of edges of the bottom surface of the encapsulation. The exposed portion has a length. At least one of exposed portions positioned along one of the edges of the bottom surface of the encapsulation has a length different from other exposed portions along the edge. The package can also include a dummy pad exposed through a corner of the bottom surface. The configuration can enhance solder joint reliability of the package when the package is attached to a printed circuit board.Type: ApplicationFiled: March 1, 2013Publication date: July 4, 2013Applicant: ANALOG DEVICES, INC.Inventor: ANALOG DEVICES, INC.
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Publication number: 20130168675Abstract: Detecting and/or mitigating the presence of particle contaminants in a MEMS device involves including MEMS structures that in normal operation are robust against the presence of particles but which can be made sensitive to that presence during a test mode prior to use, e.g.Type: ApplicationFiled: February 25, 2013Publication date: July 4, 2013Applicant: Analog Devices, Inc.Inventor: Analog Devices, Inc.
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Publication number: 20130167642Abstract: An inertial sensor includes driving piezoelectric transducers for enabling an oscillation of a resonator, sensing piezoelectric transducers for enabling a detection of a movement of the inertial sensor, and piezoelectric compensating elements substantially equidistantly among the driving and the sensing piezoelectric transducers, wherein the compensating elements and the resonator form corresponding capacitors having capacitive gaps, and wherein, during the oscillation of the resonator, changes in electrostatic charges stored in the capacitors are measured with the compensating elements and are modified so as to modify the oscillation of the resonator.Type: ApplicationFiled: February 25, 2013Publication date: July 4, 2013Applicant: ANALOG DEVICES, INC.Inventor: Analog Devices, Inc.
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Publication number: 20130169260Abstract: 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: ApplicationFiled: February 25, 2013Publication date: July 4, 2013Applicant: Analog Devices, Inc.Inventor: Sandro Herrera
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Publication number: 20130167639Abstract: An inertial sensor includes driving piezoelectric transducers for enabling an oscillation of a resonator, sensing piezoelectric transducers for enabling a detection of a movement of the inertial sensor, and piezoelectric compensating elements substantially equidistantly among the driving and the sensing piezoelectric transducers, wherein the compensating elements and the resonator form corresponding capacitors having capacitive gaps, and wherein, during the oscillation of the resonator, changes in electrostatic charges stored in the capacitors are measured with the compensating elements and are modified so as to modify the oscillation of the resonator.Type: ApplicationFiled: February 25, 2013Publication date: July 4, 2013Applicant: ANALOG DEVICES, INC.Inventor: Anolog Devices, Inc.
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Patent number: 8476684Abstract: Transistors having improved breakdown voltages and methods of forming the same are provided herein. In one embodiment, a method of forming a transistor comprises the steps of: forming a drain and a source by doping a semiconductor with a first dopant type to form a first type of semiconductor, the drain and source being separated from one another, wherein the drain comprises a first drain region of a first dopant concentration adjacent a second drain region, such that at least a portion of the second drain region is positioned between the first drain region and the source, and further comprising forming an intermediate region by doping the semiconductor so as to form a second type of semiconductor intermediate the drain and source, the intermediate region spaced apart from the second drain region.Type: GrantFiled: September 29, 2010Date of Patent: July 2, 2013Assignee: Analog Devices, Inc.Inventors: Edward John Coyne, Paul Malachy Daly, Jagar Singh, Seamus Whiston, Patrick Martin McGuinness, William Allan Lane
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Patent number: 8477983Abstract: A microphone system implements multiple microphones on a single base. To that end, the microphone system has a base, and a plurality of substantially independently movable diaphragms secured to the base. Each of the plurality of diaphragms forms a variable capacitance with the base and thus, each diaphragm effectively forms a generally independent, separate microphone with the base.Type: GrantFiled: August 23, 2006Date of Patent: July 2, 2013Assignee: Analog Devices, Inc.Inventors: Jason W. Weigold, Kieran P. Harney
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Patent number: 8476922Abstract: A system and method for implementing a differential signaling driver with a common-mode voltage not equal to one half the power supply voltage using voltage-mode techniques. Embodiments of the present invention maintain balanced impedance at the signal output. In an embodiment, a driver may have multiple operating modes for each potential supply voltage or common-mode voltage. In an embodiment, each potential mode may involve configuring the driver by activating or deactivating switches or resistors in the driver and each potential mode may have different resistor values.Type: GrantFiled: May 27, 2011Date of Patent: July 2, 2013Assignee: Analog Devices, Inc.Inventors: Mark Sayuk, Ronald Kapusta
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Patent number: 8476591Abstract: A radiation sensor device including an integrated circuit chip including a radiation sensor on a surface of the integrated chip, one or more electrical connections configured to connect between an active surface of the integrated circuit chip and a lead frame, a cap attached to said integrated circuit chip spaced from and covering said radiation sensor, the cap having a transparent portion defining a primary lens transparent to the radiation to be sensed, a secondary lens disposed in a recess proximate and spaced from said primary lens transparent to the radiation to be sensed, and an air gap between said primary lens and said secondary lens.Type: GrantFiled: December 4, 2008Date of Patent: July 2, 2013Assignee: Analog Devices, Inc.Inventors: Oliver Kierse, Eamon Hynes
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Patent number: 8477856Abstract: The invention is directed to a multi-bit digital signal isolation system including a plurality of micro-transformers, each having a primary winding and a secondary winding, a transmitter circuit receiving a multi-bit signal and transmitting an encoded logic signal across the plurality of micro-transformers corresponding to the multi-bit signal, the primary winding of each micro-transformer receiving a signal corresponding to one of at least three possible states, and a receiver circuit receiving the encoded logic signal from the secondary windings of the plurality of transformers, decoding the encoded logic signal and reconstructing the received multi-bit signal based upon the decoded signal.Type: GrantFiled: March 31, 2009Date of Patent: July 2, 2013Assignee: Analog Devices, Inc.Inventor: Eric Gaalaas
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Patent number: 8477053Abstract: A resolution detector may be used in conjunction with an ADC to identify unresolved bits in a raw digital output of the ADC. Bits that have been properly resolved by the ADC may be distinguished from those that have not been successfully resolved, because of time limitations or other reasons. Each bit that has not been successfully resolved may be classified and referred to as an unresolved bit. If there are any unresolved bits detected in a sampling cycle, dither may then be incorporated in the raw digital output to compensate for the unresolved bits in that cycle. The dither may be added to the raw digital output of the ADC to eliminate any missing codes in the processed digital output codes or the dither may be substituted for the unresolved bits in raw digital output to generate the processed digital output.Type: GrantFiled: November 18, 2011Date of Patent: July 2, 2013Assignee: Analog Devices, Inc.Inventors: Ronald Kapusta, Doris Lin, Yervant Dermenjian
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Publication number: 20130162259Abstract: A system and method for developing highly accurate measurements by calibrating monitoring units with the known accurate measurements of an adjacent monitoring unit, thereby limiting the number of accurate references needed to accurately read a component stack. In a voltage stack having multiple packs with multiple cells per pack, a voltage reference with a known accuracy may be associated with a single pack. A monitoring unit may measure the overall voltage of the first pack and the combined voltage potential of the first pack and an adjacent pack. A second monitoring unit, having a different reference voltage, may then measure the overall voltage of the second pack. The two measurements of the second pack voltage may be compared and a correction factor may be calculated that may be used to correct subsequent measurements from the second pack.Type: ApplicationFiled: December 21, 2011Publication date: June 27, 2013Applicant: ANALOG DEVICES, INC.Inventor: John WYNNE
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Publication number: 20130162354Abstract: A slew rate booster, switchably enabled selector, or other arrangement may be included in a cascode amplifier to keep the current buffer/common gate transistor and the input/common source transistor saturated as the voltage at the source of the current buffer transistor drops during a transient input voltage spike at the gate of the input transistor. In some instances a higher potential may be supplied to a gate of the current buffer transistor during an initial phase of the settling period than during a second phase of the settling period when a lower potential may be applied. Other techniques may be used in different embodiments. Devices and methods are provided.Type: ApplicationFiled: September 4, 2012Publication date: June 27, 2013Applicant: ANALOG DEVICES, INC.Inventors: Haiyang Zhu, Ronald A. Kapusta
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Publication number: 20130166259Abstract: A method for linearizing a non-linear system element includes acquiring data representing inputs and corresponding outputs of the non-linear system element. A model parameter estimation procedure is applied to the acquired data to determine model parameters of a model characterizing input-output characteristics of the non-linear element. An input signal representing a desired output signal of the non-linear element is accepted and processed to form a modified input signal according to the determined model parameters. The processing includes, for each of a series of successive samples of the input signal, applying an iterative procedure to determining a sample of the modified input signal according to a predicted output of the model of the non-linear element. The modified input signal is provided for application to the input of the non-linear element.Type: ApplicationFiled: November 16, 2012Publication date: June 27, 2013Applicant: Analog Devices, Inc.Inventor: Analog Devices, Inc.
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Patent number: 8471741Abstract: A method and a corresponding device for reducing inter-channel coupling in a circuit having a plurality of channels includes injecting a randomly determined amount of dither into a first channel of a circuit having a plurality of channels, and after injecting the dither, obtaining an output signal of a second channel in the plurality of channels. A correlation value indicating a degree of correlation between the injected dither and the output signal is determined, and an amount of charge applied to the second channel due to cross-coupling with the first channel is reduced. The amount of the reduction is calculated as a function of the correlation value.Type: GrantFiled: January 12, 2012Date of Patent: June 25, 2013Assignee: Analog Devices, Inc.Inventors: Ahmed Mohamed Abdelatty Ali, Huseyin Dinc
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Patent number: 8471740Abstract: A method and device involve a circuit having a switched capacitor network that is switchably connected to an input signal. A randomly determined amount of dither is injected into a circuit having a switched capacitor network that is switchably connected to an input signal. After injecting the dither, at least one correlation value is determined. The correlation value(s) indicates a degree of correlation between the injected dither and an output of the circuit. Distortion caused by an amount of charge kicked back into the circuit when the switched capacitor network is reconnected to the input signal may then be reduced. The reduction is calculated as a function of the correlation value(s).Type: GrantFiled: December 8, 2011Date of Patent: June 25, 2013Assignee: Analog Devices, Inc.Inventors: Huseyin Dinc, Ahmed Mohamed Abdelatty Ali, Paritosh Bhoraskar
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Patent number: 8472270Abstract: An apparatus and method of testing one-time-programmable memory limits current through a one-time-programmable memory to less than a threshold amplitude, where the memory has a fuse configured to blow upon receipt of a signal having the threshold amplitude. The method also uses blow signal assertion circuitry to attempt to assert a blow signal to the fuse. When not defective, blow signal assertion circuitry is configured to permit the low amplitude signal to flow through the fuse when the fuse is not blown and the blow signal is asserted. The method then produces an output signal having a success value if the limited current flows through the fuse, and a failure value if the current does not flow through the fuse.Type: GrantFiled: July 22, 2011Date of Patent: June 25, 2013Assignee: Analog Devices, Inc.Inventors: Howard R. Samuels, Thomas W. Kelly
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Publication number: 20130155396Abstract: An optical detector may include an aperture, at least two photodetectors, and a measuring arrangement to quantify light detected at the photodetectors after passing through the aperture without the need for a lens. The aperture may be positioned between a light source and the two photodetectors to allow light from a light source to pass through the aperture to the photodetectors. The photodetectors may include PIN junction photodiodes and may be electrically isolated from each other, positioned next to each other in a side-by-side configuration, and then aligned with the aperture so that a proportion of the quantified light detected at the photodetectors changes as an angle of light from the light source incident to the aperture changes. Optical detectors and methods are provided.Type: ApplicationFiled: December 19, 2011Publication date: June 20, 2013Applicant: ANALOG DEVICES, INC.Inventor: Shrenik Deliwala
