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Assignee: Analog Devices, Inc.


Location: Norwood, MA
No. of patents: 1839

1                      
NumberTitleIssue Date
8184723Feedback system and apparatus for video compensation
A system and apparatus for compensating cable losses in a video signal transmission system includes feedback circuits to determine the spectral attenuation of a received signal and to control an equalizer circuit to amplify selected frequencies of the received signa...
05/22/2012
8184201Method and apparatus for automatic audio standard detection in terrestrial broadcast signals employing frequency scanning
A method and apparatus for automatic audio standard detection in terrestrial broadcast signals is disclosed. In one embodiment, a method of detecting automatic audio standard for terrestrial broadcast includes scanning for each known audio frequency standard of inte...
05/22/2012
8183924Output stage with adaptive bias control
An input stage receives a differential input signal at first and second input nodes and provides a differential output current at first and second output nodes. The differential output current includes a component taken from the input nodes through first and second ...
05/22/2012
8179731Storage devices with soft processing
A storage device includes a storage array having a group of storage elements. Each storage element can written to a discrete set of physical states. A read circuit selects one or more storage elements and generates, for each selected storage element, an analog signa...
05/15/2012
8179196High voltage amplification using low breakdown voltage devices
Methods and apparatus for amplifying signals over a wide frequency range to generate high voltage outputs feature a pair of switching modules which are connected in series. Switching modules, e.g., field-effect transistors (FETs), operate based on the voltage differ...
05/15/2012
8174321Apparatus and method for miller compensation for multi-stage amplifier
An amplifier circuit includes a first amplifier stage having a first output node; a second amplifier stage having a second output node; and a compensation block electrically coupled between the first and second output nodes. The compensation block has a compensation...
05/08/2012
8174318Apparatus and method for providing linear transconductance amplification
Apparatus and methods are disclosed, such as those involving a transconductance amplifier. One such apparatus includes a transconductance amplifier comprising an input to receive an input voltage signal, and an output to provide an output current signal at least par...
05/08/2012
8174111Vertical mount package for MEMS sensors
A vertical mount pre-molded type package for use with a MEMS sensor may be formed with a low moisture permeable molding material that surrounds a portion of the leadframes and forms a cavity in which one or multiple dies may be held. The package includes structures ...
05/08/2012
8169193Charge injection discharge circuit
A circuit for dissipating injected parasitic charge includes a circuit stage, a pulse generating circuit and a switch. The circuit stage has an input node and an output node that injects a parasitic charge when switched OFF to the output node. The pulse generating c...
05/01/2012
8169042Integrated microphone
A method of forming a microphone having a variable capacitance first deposits high temperature deposition material on a die. The high temperature material ultimately forms structure that contributes to the variable capacitance. The method then forms circuitry on the...
05/01/2012
8164377Signal dependent compensation with matched detectors
A detector circuit includes a main path having a first detector to generate an output signal in response to an input signal, and a reference path having a second detector matched to the first detector to generate a reference signal in response to the input signal. T...
04/24/2012
8159448Temperature-compensation networks
Temperature-compensation network embodiments are provided to generate compensation signals which may be useful in improving the performance of a variety of important systems. An embodiment includes a limit current mirror configured to provide a limit current, a curr...
04/17/2012
8159206Voltage reference circuit based on 3-transistor bandgap cell
A voltage regulator comprises first and second bipolar transistors operating at different current densities; a resistance is connected between their bases across which ΔVBE appears. A third bipolar transistor is connected such that its base voltage is eq...
04/17/2012
8156264Digital output sensor FIFO buffer with single port memory
A digital output sensor includes a sensor module for providing digital data representative of a sensed parameter, a First-In-First-Out (FIFO) memory having a single port memory, and an output port for transmitting the digital data. The digital data from the sensor m...
04/10/2012
8154433Linearity correction circuit for voltage mode DAC
A force/sense voltage-mode DAC coupled with multiple transconductance amplifiers that generate a correction current injected to a node in one of the DAC cells is discussed. The correction current injected into the DAC cell may reduce nonlinearity produced by biasing...
04/10/2012
8154365MEMS switching device protection
A micro-machined switching system for equalizing an electrical property, such as charge due to parasitic capacitance formed at an input and an output of a micro-machined switching device. The micro-machined switching device may be a MEMS relay or a MEMS switch. In a...
04/10/2012
8154322Apparatus and method for HDMI transmission
Apparatus and methods are disclosed, such as those involving a high frequency transmitter. One such apparatus includes a pre-amplifier configured to receive an input signal via an input node; and a capacitor block electrically coupled between the pre-amplifier and a...
04/10/2012
8151641Mode-matching apparatus and method for micromachined inertial sensors
A mode matching servo for an inertial sensor having a resonator and an accelerometer provides a test signal at a frequency higher than a predetermined inertial sensor response frequency and lower than an accelerometer resonance mode frequency so as to induce acceler...
04/10/2012
8149028Method and device for dividing a frequency signal
A method for dividing a frequency includes the steps of receiving a first signal having a first frequency as a clock input to a first digital counter and outputting a second signal as a clock input to a second digital counter having a higher counting capacity than t...
04/03/2012
8147129Apparatus for testing infrared sensors
An apparatus for use with automatic testing equipment for testing infrared sensors on integrated circuits is provided. The apparatus includes an infrared source, a heat mass, and an electronic frequency modulator. The infrared source is modulated according to a pred...
04/03/2012
8146425MEMS sensor with movable z-axis sensing element
A MEMS sensor includes a substrate and a MEMS structure coupled to the substrate. The MEMS structure has a mass movable with respect to the substrate. The MEMS sensor also includes a reference structure positioned radially outward from the MEMS structure. The refere...
04/03/2012
8143792Light-emitting diode backlighting systems
Lighting system embodiments are provided to energize and calibrate strings of light-emitting diodes. These embodiments are particularly useful for calibration of strings of light-emitting diodes that are arranged to provide backlighting of liquid crystal displays. T...
03/27/2012
8138593Packaged microchip with spacer for mitigating electrical leakage between components
A packaged microchip has a base, at least one spacer coupled to the base, and first and second microchips mounted to the at least one spacer. The at least one spacer is configured to substantially prevent leakage current between the first and second microchips. ...
03/20/2012
8135975Software programmable timing architecture
A first output count is compared with first and second stored count values for generating an output event at a first node if the first Output count corresponds to the first or second stored count values. ...
03/13/2012
8134407Enhancing dual op-amps for differential connections
In an embodiment of the invention, a differential input signal is coupled to a plurality of transconductance blocks. In some embodiments, each of the transconductance blocks divide an input transconductance among a plurality of signal paths to a plurality of outputs...
03/13/2012
8131006MEMS device with surface having a low roughness exponent
A MEMS microphone has a backplate and a movable diaphragm that together form a variable capacitance. The backplate has a backplate surface and, in a corresponding manner, the diaphragm has a diaphragm surface that faces the backplate surface. At least one of the bac...
03/06/2012
8130979Noise mitigating microphone system and method
A microphone system has a base coupled with first and second microphone apparatuses. The first microphone apparatus is capable of producing a first output signal having a noise component, while the second microphone apparatus is capable of producing a second output ...
03/06/2012
8130886Samples of bandlimited signals recovery system and method
A method and system of sample recovery is disclosed. In one embodiment, a method includes selecting initially in an arbitrary manner, a current symbol from a sequence of input samples, comparing a symbol timing estimate associated with the current symbol to a predet...
03/06/2012
8130229Methods and apparatus for image processing at pixel rate
Embodiments of the present invention provide for improved timing control in 2-D image processing to maintain a constant rate of memory fetches and pixel outputs even when the processing operations transition to a new line or frame of pixels. A one-to-one relationshi...
03/06/2012
8130124Method and apparatus for improving the reliability of a serial link using scramblers
Embodiments provide for a method for eliminating pathological sequences in a serial bit stream. Parallel data words having a first bit length are received. The received data words may be analyzed for a pathological sequence. If a pathological sequence is present in ...
03/06/2012
8130037Apparatus and method for reducing current noise
An input bias current cancellation circuit includes reference transistors placed in series and a current summation network. The current summation network can be configured to sum the base currents of the reference transistors to produce a summed current. A current m...
03/06/2012
8130035Post amplifier with selectable gain
A selectable gain amplifier includes two or more selectable gain stages, each gain stage having a first input coupled to receive an input signal, a second input, and an output. The amplifier further includes and two or more feedback paths coupled between the outputs...
03/06/2012
8130029Circuit for switchably connecting an input node and an output node
A switching circuit for switchably connecting an input node and an output node. The switching circuit comprises a switch operable to switchably connect the input node to the output node in response to a switching signal. A sensor is provided for sensing the voltage ...
03/06/2012
8130000Methods and apparatus for battery monitoring
A battery monitoring system is provided to monitor a battery stack having multiple cells connected in series. The monitoring system includes monitor modules to monitor respective subsets of the cells of the battery stack, each monitor module, in response to one or m...
03/06/2012
8129803Micromachined microphone and multisensor and method for producing same
A micromachined microphone is formed from a silicon or silicon-on-insulator (SOI) wafer. A fixed sensing electrode for the microphone is formed from a top silicon layer of the wafer. Various polysilicon microphone structures are formed above a front side of the top ...
03/06/2012
8125285Digitally controlled oscillators
The problems of large oscillator signal frequency change per bit, small runtime tuning bandwidth, and large wiring layout (and therefore large integrated circuit (IC) layout) in digitally-controlled oscillators are addressed by using an array of addressable tuning u...
02/28/2012
8125275Amplifier having input/output cells with discrete gain steps
An amplifier has an input section with one or more input cells and an output section with one or more output cells. Either the input section or the output section includes at least two cells that may be selected to provide discrete gain settings. A loop amplifier is...
02/28/2012
8125262Low power and low noise switched capacitor integrator with flexible input common mode range
An integrator is described that may include a level-shifting capacitor, a feedback capacitor, a pre-amplifier stage and a multi-path amplifier module. The integrator may have inputs for connected an input signal source to the level-shifting capacitor. The level-shif...
02/28/2012
8124436MEMS switch capping and passivation method
A MEMS switch with a platinum-series contact is capped through a process that also passivates the contact by controlling, over time, the amount of oxygen in the environment, pressures and temperatures. Some embodiments passivate a contact in an oxygenated atmosphere...
02/28/2012
8122428Methods and apparatus for automation and facilitating design of register maps
In one aspect, a software application for facilitating design of a register specification is provided. The application comprises an interface adapted to receive input from a user indicating information about at least one register in the register specification, the i...
02/21/2012
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