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Analog Devices Global patents

Recent patent applications related to Analog Devices Global. Analog Devices Global is listed as an Agent/Assignee. Note: Analog Devices Global may have other listings under different names/spellings. We're not affiliated with Analog Devices Global, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "A" | Analog Devices Global-related inventors

Operational amplifier

The amplifier circuit includes a pair of differential input stages coupled to an output stage where both a selected input stage and an unselected input stage are active with one of either a differential input signal or a reference voltage. A switching network couples a first input differential signal to a first differential input stage and a reference voltage to a second differential input stage when an amplifier input signal is less than a threshold voltage. ... Analog Devices Global

Devices and methods for smart sensor application

An apparatus comprises a load resistance connectable in series with the electronic sensor to form a series resistance of the load resistance and the internal impedance of the electronic sensor; an excitation circuit configured to apply a predetermined voltage to a circuit element; and a measurement circuit configured to: initiate applying the predetermined voltage to the series resistance and determining the series resistance; initiate applying the predetermined voltage to the load resistance and determining the load resistance; and calculate the internal impedance of the sensor using the determined series resistance and the load resistance, and provide the calculated internal impedance to a user or process.. . ... Analog Devices Global

Optical charging system with integrated sensor and power receiver

Embodiments of the disclosure can provide an optical charging system with an integrated sensor and power receiver. An electronic device (e.g., a wearable) can include an optical sensor for performing photometric measurements. ... Analog Devices Global

Light detector calibrating a time-of-flight optical system

This disclosure pertains to a system and method for calibrating a time-of-flight imaging system. The system includes a housing that houses light emitter, a light steering device, and a photosensitive element. ... Analog Devices Global

High-voltage unity-gain buffer

Described are various techniques that can minimize the use of high-voltage devices in a unity-gain buffer that can be used in a high voltage application, while providing a circuit that generates an output that is an accurately buffered version of the input.. . ... Analog Devices Global

Voltage variable attenuator, an integrated circuit and a method of attenuation

The present disclosure provides a voltage variable attenuator (vva) with a controllable matching network. The output of the attenuation portion of the vva is couple to a matching network. ... Analog Devices Global

Isolated dc-dc converter with an h-bridge circuit

Isolated dc-dc converters and methods for operating the same are described herein. Dc-dc converters include a driver that drives a primary winding of a transformer to transmit power to a secondary winding of the transformer across an isolation barrier. ... Analog Devices Global

Method of providing enhanced range accuracy

A system and method can be provided for introducing a varying time delay between a sequence of electrical pulses in a laser range finding system. A laser beam can be modulated with the sequence of electrical pulses. ... Analog Devices Global

Spatial digital pre-distortion

Power amplifier circuits can behave in a non-linear manner particularly when operated to produce output signal swings approaching an amplifier saturation region. A pre-distortion signal can be applied to a signal to be transmitted to compensate for such power amplifier non-linearity. ... Analog Devices Global

Pre-charging circuitry for multiplexer

A pre-charge circuit is provided for pre-charging the input node of a capacitive component to which the multiplexer output is fed to a charge level that is close to or approximates the signal output level of the multiplexer when its output is next switched. In order to reduce the level shifting burden on the amplifier in the pre-charge circuit, each pre-charge circuit input channel has a respective capacitor that is able to be switched in and out of series with the respective multiplexer channels, such that the respective capacitors track the signal levels on the multiplexer channels. ... Analog Devices Global

Charge injection compensation circuit

A charge injection compensation circuit compensates for charge injection by a field-effect transistor (fet) switch regardless of a supply voltage. The charge injection compensation circuit includes a main switch that injects charge into an electronic circuit when switched off, and a charge storage device that stores the injected charge until it can be dissipated to a dissipating node. ... Analog Devices Global

Planar processing of suspended microelectromechanical systems (mems) devices

Suspended microelectromechanical systems (mems) devices including a stack of one or more materials over a cavity in a substrate are described. The suspended mems device may be formed by forming the stack, which may include one or more electrode layers and an active layer, over the substrate and removing part of the substrate underneath the stack to form the cavity. ... Analog Devices Global

Wake-up wireless sensor nodes

A wireless sensor node is described. The wireless sensor node may include a wake-up circuitry configured to awaken the sensor when a request is received. ... Analog Devices Global

Magnetic isolators for increased voltage operations and related methods

A magnetic isolator is described. The magnetic isolator may comprise a top conductive coil, a bottom conductive coil, and a dielectric layer separating the top conductive coil from the bottom conductive coil. ... Analog Devices Global

05/10/18 / #20180128648

Multi-dimensional measurement using magnetic sensors and related systems, methods, and integrated circuits

This disclosure describes, among other things, embodiments of devices, systems, and methods for using 3-dimensional (3d) magnetic sensors to detect the position of a magnetic target. By using 3d magnetic sensors, a two dimensional array of such magnetic sensors can be used to determine a 3d position of a magnetic target.. ... Analog Devices Global

05/03/18 / #20180123583

Low-area, low-power, power-on reset circuit

This application discusses techniques for providing a power-on reset (por) circuit. The techniques take advantage of the small size of active devices, consume very little current and can use a native nmos transistor to provide a stable reference over temperature and voltage variations.. ... Analog Devices Global

04/05/18 / #20180097522

Fast settling sawtooth ramp generation in a phase-locked loop

Aspects of this disclosure relate to reducing settling time of a sawtooth ramp signal in a phase-locked loop. Information from a loop filter of the phase-locked loop can be stored and used within the loop filter so as to improve the settling time of the sawtooth ramp signal. ... Analog Devices Global

04/05/18 / #20180095119

On-chip measurement for phase-locked loop

A chip includes a phase-locked loop (pll) and a test controller. The pll includes an oscillator and a phase detector. ... Analog Devices Global

03/29/18 / #20180088859

Adaptive self-configuring sensor node

An adaptive self-configuring sensor node is disclosed herein. The node is associated with one or more sensor, and can include a microcontroller unit (mcu), sensors and a wired/wireless communication module (e.g., transceiver) to communicate the data collected by the sensors. ... Analog Devices Global

03/29/18 / #20180088155

Electrical overstress detection device

The disclosed technology generally relates to electrical overstress protection devices, and more particularly to electrical overstress monitoring devices for detecting electrical overstress events in semiconductor devices. In one aspect, a device configured to monitor electrical overstress (eos) events includes a pair of spaced conductive structures configured to electrically arc in response to an eos event, wherein the spaced conductive structures are formed of a material and have a shape such that arcing causes a detectable change in shape of the spaced conductive structures, and wherein the device is configured such that the change in shape of the spaced conductive structures is detectable to serve as an eos monitor.. ... Analog Devices Global

03/22/18 / #20180083645

Method and apparatus to reduce effect of dielectric absorption in sar adc

A successive approximation register analog to digital converter (sar adc) is provided in which impact of dielectric absorption is reduced with a correction circuit configured to adjust a present digital code value signal based at least in part upon a previous digital code value signal, an acquisition time and temperature.. . ... Analog Devices Global

03/22/18 / #20180083439

Protection schemes for mems switch devices

Micro-electromechanical switch (mems) devices can be fabricated using integrated circuit fabrication techniques and materials. Such switch devices can provide cycle life and insertion loss performance suiting for use in a broad range of applications including, for example, automated test equipment (ate), switching for measurement instrumentation (such as a spectrum analyzer, network analyzer, or communication test system), and uses in communication systems, such as for signal processing. ... Analog Devices Global

03/15/18 / #20180076782

Apparatus and methods for a difference amplifier

Apparatus and methods for a difference amplifier are provided. In certain examples, the difference amplifier can provide high common mode rejection without differential signal attenuation. ... Analog Devices Global

03/15/18 / #20180076780

Fast settling capacitive gain amplifier circuit

A capacitive gain amplifier circuit amplifies an input signal by a pair of differential amplifier circuits couples in series. The first differential amplifier circuit is reset during an autozero phase while disconnected from the second differential amplifier circuit, and the first and second differential amplifier circuits are connected together in series during a chop phase. ... Analog Devices Global

03/15/18 / #20180076779

Fast settling capacitive gain amplifier circuit

A capacitive gain amplifier circuit includes two sets of miller capacitors and two output stage differential amplifier circuits. A first set of miller capacitors is used to compensate the first output stage differential amplifier circuit during a first phase that resets the first output stage differential amplifier circuit. ... Analog Devices Global

03/01/18 / #20180062675

Radio frequency transmitter noise cancellation

Transmitter noise cancellation may be applied on a channel by channel basis to active channels of an incoming radio frequency signal received at a receiver. A noise cancellation filter may be provided for each active channel in a predetermined signal band. ... Analog Devices Global

03/01/18 / #20180062607

Switchable transformer-based balun

A transformer-based balun circuit s disclosed herein. The balun can be implemented using a spiral transformer, where primary and secondary transformer windings can be inductively coupled and can be implemented on the same metal layer (or different metal layers, e.g. ... Analog Devices Global

03/01/18 / #20180062260

Antenna array calibration systems and methods

Aspects of this disclosure relate to an array calibration system and method using probes disposed between antenna elements. In certain embodiments, the calibration is performed by measuring near-field relative phase and amplitude measurements of the antenna elements and using such relative measurements to adjust the amplitude and phase of the transceivers connected to the antenna elements. ... Analog Devices Global

03/01/18 / #20180062071

Compact integrated device packages

An integrated device package sized and shaped to fit in a small space, such as within a body lumen or cavity of a human patient, is disclosed. The integrated device package includes a package substrate and integrated device dies. ... Analog Devices Global

03/01/18 / #20180061569

Methods of manufacture of an inductive component and an inductive component

The disclosure relates to the manufacture of inductive components, in particular transformers, using a combination of microfabrication techniques and discrete component placement. By using a prefabricated core, the core may be made much thicker than one that is deposited using microfabrication techniques. ... Analog Devices Global

03/01/18 / #20180059707

Proportional to absolute temperature reference circuit and a voltage reference circuit

The present disclosure relates to a ptat voltage reference circuit and a temperature independent voltage reference circuit in which the effect of transistor base currents on the circuit output is compensated for. This is achieved by a pair of compensation resistors. ... Analog Devices Global

03/01/18 / #20180059044

Electrochemical sensor, and a method of forming an electrochemical sensor

An electrochemical sensor is provided which may be formed using micromachining techniques commonly used in the manufacture of integrated circuits. This is achieved by forming microcapillaries in a silicon substrate and forming an opening in an insulating layer to allow environmental gases to reach through to the top side of the substrate. ... Analog Devices Global

02/08/18 / #20180041200

Galvanically isolated data isolator with improved common mode transient rejection

A transformer based digital isolator is provided that has improved immunity to common mode interference. The improved immunity is provided by placing the transformer in association with an h-bridge drive circuit, and taking additional effort to tailor the on state resistance of the transistors to control a common mode voltage at the transformer.. ... Analog Devices Global

02/08/18 / #20180040941

Radio frequency isolator

Radio frequency (rf) isolators are described, coupling circuit domains operating at different voltages. The rf isolator may include a transmitter which emits a directional signal toward a receiver. ... Analog Devices Global

02/08/18 / #20180035910

Systems and methods of monitoring electrodermal activity (eda) using an ac signal and discrete fourier transform (dft) analysis

Systems and methods of monitoring electrodermal activity (eda) in human subjects suitable for use in wearable electronic devices. An eda monitoring system can include first and second dry electrodes, an alternating current (ac) excitation signal source, a trans-impedance amplifier, an analog-to-digital (a-to-d) converter, a discrete fourier transform (dft) processor, and a microprocessor. ... Analog Devices Global

02/01/18 / #20180034279

Power regulation system for energy harvesters

According to some aspects, a power regulation system for energy harvesters that lacks a battery is provided. In some embodiments, the power regulation system may receive power from multiple energy harvesters that generate energy from different sources, such as wind currents and ambient light. ... Analog Devices Global

02/01/18 / #20180033565

Mems switch

Several features are disclosed that improve the operating performance of mems switches such that they exhibit improved in-service life and better control over switching on and off.. . ... Analog Devices Global

12/21/17 / #20170366876

Current sensing in two-dimensional area sensors

Aspects of the embodiments are directed an analog front end circuit (afe circuit), the afe circuit including a beamforming circuit configured to receive as an input a plurality of receiver inputs, the receiver inputs coupled to a sensor element. The beamforming circuit can include a plurality of receiver sub-circuits, each sub-circuit including a digital-to-analog converter, a low noise amplifier, and an i/q mixer circuit element; an adder circuit element at an output of the i/q mixer circuit element; and a multiplexer coupled to an output of the adder circuit. ... Analog Devices Global

12/21/17 / #20170363664

Apparatus for and method of providing measurements of uncertainty in respect of a transfer function

An apparatus is provided that can estimate a transfer function, for example of current measurement systems, voltage measurement systems and power measurement systems, and also provide an estimate of certainty about the transfer function. This enables customers to have confidence that they are not being overcharged for electricity.. ... Analog Devices Global

12/14/17 / #20170359079

Digital to analog converter including logical assistance

Digital to analog converters (dac) are used to convert digital signals to analog values. The digital system providing data to the analog converter may be highly tasked. ... Analog Devices Global

12/14/17 / #20170359077

Buffer, and digital to analog converter in combination with a buffer

A buffer is provided where a part of the buffer is implemented in switched capacitor or other analog discrete time processing circuitry and a dynamic response characteristic, such as an effective gain or charge transfer coefficient between the input stage and an output stage is digitally controllable. This means that the buffer can be driven as if it was a system controlled by, for example a three (3) term controller, giving rise to greater, digital flexibility in tailoring the buffer's transient response.. ... Analog Devices Global

12/14/17 / #20170359041

Buffer with increased headroom

Provided herein are amplifiers, such as buffers, with increased headroom. An amplifier stage includes a follower transistor and current source configured to receive a power supply voltage comprising an alternating current component and a direct current component. ... Analog Devices Global

12/14/17 / #20170356934

Current sensor and a method of manufacturing a current sensor

The present disclosure provides an improved rogowski-type current sensor. In order to allow the sensing coil and the compensation wire to overlap, the sensor is produced using two boards. ... Analog Devices Global

12/07/17 / #20170351284

Fast regulator architecture having transistor helper

Apparatus and methods for assisting a voltage regulator. In an example, a voltage regulator can include an error amplifier configured to compare a reference voltage with a representation of an output voltage of the voltage regulator, an output transistor coupled to a supply voltage and configured to receive an output of the error amplifier and to provide the output voltage, and an auxiliary-current circuit including a helper transistor having a terminal coupled to the output voltage, the helper transistor configured to turn on when the output voltage drops due to current demand from the load and to provide charge current to the load in addition to current provided by the output transistor.. ... Analog Devices Global

11/30/17 / #20170346276

Chip including over-voltage and surge protection

An integrated circuit is provided in which a surge protector, protecting against modest over-voltage events which may contain a lot of energy, and an electrostatic discharge (esd) protector, protecting against high voltage events that may contain only a little energy, are provided within the integrated circuit package. The two types of protectors may protect against different types of electrical events.. ... Analog Devices Global

11/23/17 / #20170338842

Mixed-mode digital predistortion

Various examples are directed to systems and methods for digital predistortion (dpd). A linear digital predistortion (dpd) circuit may be programmed to generate a pre-distorted signal linear component based at least in part on a complex baseband signal. ... Analog Devices Global

11/23/17 / #20170338841

Wideband digital predistortion

Various examples are directed to systems and methods for wideband digital predistortion. A digital pre-distortion circuit may be programmed to receive a complex baseband signal and generate a pre-distorted signal. ... Analog Devices Global

11/16/17 / #20170331489

Integrated circuit with on chip variation reduction

Many electronic circuits rely on the ratio of one component to other components being well defined. Current flow in component can warm the component causing its electrical properties to change, for example the resistance of a resistor may increase due to self-heating as a result of current flow. ... Analog Devices Global

11/09/17 / #20170324251

Physical isolation between mac and phy ethernet connections

An apparatus is provided comprising: a first power domain that includes a first component that operates at a first voltage level; a second power domain that includes a media access controller (mac) that operates at a second voltage level; and a third power domain that includes a physical media access (phy) device that operates at a third voltage level; wherein the first voltage level is higher than the second voltage level; and wherein the second voltage level is unreferenced; further including: a first reinforced electrical isolation circuit disposed on a first circuit path that includes at least one signal lane that extends between the first power domain and the second power domain; and a second reinforced electrical isolation circuit disposed on a second circuit path that includes at least one signal lane that extends between the mac device and the phy device.. . ... Analog Devices Global

11/09/17 / #20170323879

Bus driver / line driver

A bus driver is provided that can withstand over voltages being applied to its output terminal without the protection circuit detracting from the voltage swing that can be provided by the driver. The circuit arrangement also allows transistors having good on state resistance and large tolerance of drain-to-source voltages to be used.. ... Analog Devices Global

10/26/17 / #20170309038

Detecting a presence of a target in a room

Apparatus for detecting a presence of a target in a room is disclosed. The apparatus includes a motion-sensitive passive infrared (pir) sensor, an imaging sensor, and a control unit. ... Analog Devices Global

10/12/17 / #20170295503

Network connectivity for constrained wireless sensor nodes

Wireless sensor nodes for enabling network connectivity in a wireless sensor network system are disclosed herein. An exemplary method includes receiving a lightweight machine-to-machine (lwm2m) network packet from a network node over a network; using a media access control (mac) layer to route the lwm2m network packet to a sensor node when a destination internet protocol (ip) address specified in the lwm2m network packet matches a virtual ip address; and using a network layer to route the lwm2m network packet to the sensor node when the destination ip address does not match a virtual ip address.. ... Analog Devices Global

10/05/17 / #20170288650

Tank circuit and frequency hopping for isolators

Embodiments of the present disclosure may provide a circuit comprising a tank circuit. The tank circuit may include an inductor having a pair of terminals, a first pair of transistors, and a first pair of capacitors. ... Analog Devices Global

09/28/17 / #20170279444

Combined isolator and power switch

A combined isolator and power switch is disclosed. Such devices are useful in isolating low voltage components such as control compilers from motors or generators working at high voltages. ... Analog Devices Global

09/28/17 / #20170276740

Magnetic field detector

Apparatus and methods provide sensing of quadrants, angles, or distance using magnetoresistive elements. A quadrant or angle sensor can have magnetoresistive elements split into multiple angles to generate an output with reduced harmonics. ... Analog Devices Global

09/28/17 / #20170276514

Offset compensation for magnetic field detector

Apparatus and methods provide sensing of quadrants, angles, or distance using magnetoresistive elements. A quadrant or angle sensor can have magnetoresistive elements split into multiple angles to generate an output with reduced harmonics. ... Analog Devices Global

09/21/17 / #20170269623

Reducing voltage regulator transistor operating temperatures

Methods and apparatus to reduce localized transistor operating temperature increases in fully integrated voltage regulator circuits are provided. Transistor self-heating effects are reduced by dispersing heat more evenly over the integrated circuit die, via use of nested voltage regulator circuits and/or use of more than one transistor in a voltage regulator circuit pass device. ... Analog Devices Global

09/21/17 / #20170265794

Blood oxygenation sensor with led current modulation

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-dissipation current pulses to at least one of the first and second current-powered light sources during second time intervals.. . ... Analog Devices Global

09/14/17 / #20170264422

System and method for reducing false preamble detection in a communication receiver

An apparatus comprising: a signal detection circuit determine a count reached by a counter between successive detected edge signals and to provide an indication of whether successive detected edge signals are separated from each other by at least a prescribed time interval; a clock circuit that produces clock signal pulses in response to a provided indication of an occurrence of a succession of detected edge signals each separated from a previous edge signal of the succession by at least the prescribed time interval; phase matching circuitry configured to align the produced clock signal pulses with detected edge signals; and a pattern matching circuit that that samples a sequence of detected edge signals aligned with the produced clock signal pulses to detect a data packet.. . ... Analog Devices Global

09/14/17 / #20170261345

Multiturn sensor arrangement and readout

A system includes a multiturn counter that can store a magnetic state associated with a number of accumulated turns of a magnetic field. The multiturn counter includes a plurality of magnetoresistive elements electrically coupled in series with each other. ... Analog Devices Global

09/07/17 / #20170257086

Resistor controlled timer circuit with gain ranging

A timer circuit is provided comprising: a resistor; a programmable gain circuit coupled to amplify the reference level based upon a resistor and a selected gain; a detection circuit coupled to identify the amplified reference level based upon a resistor; a selection circuit configured to select the gain based at least in part upon the identified amplified reference level based upon a resistor; a comparator circuit configured to transition between providing a signal having a first value and providing a signal having a second value based at least in part upon comparisons of a reactive circuit element excitation level with the amplified reference level based upon a resistor and with a second reference level; and reactive circuit element excitation circuit configured to reverse excitation of the reactive circuit element in response to the comparator circuit transitioning between providing the signal having the first value and providing the signal having the second value.. . ... Analog Devices Global

09/07/17 / #20170257031

Inductor current based mode control for buck-boost converters

Apparatus and methods for controlling voltage converter are provided, in an example, a switched-mode dc-dc voltage converter can include an inductor, at least four switches coupled to the inductor and configured to direct current through the inductor to provide a desired output voltage at an output voltage terminal of the voltage converter using an input voltage supply and a ground reference of the converter, and a controller circuit, configured to receive an indication of inductor current through the inductor and to use the slope of the inductor current to control a change between two operating modes of a group of operating modes that include a boost operating mode, a buck operating mode, and a buck-boost operating mode.. . ... Analog Devices Global

09/07/17 / #20170256954

Current limit control in hot swap controllers

In an example, a device for controlling an electronic switch between a power supply and a load includes a first device pin configured to be in communication with the electronic switch, a sensing circuit configured to be connected to an input voltage and to measure a current to the load, a control circuit configured to be in communication with the sensing circuit and the electronic switch, the control circuit configured to use a current limit signal to control operation of the electronic switch, and a current limit circuit configured to be in communication with the control circuit, the current limit circuit configured to generate the current limit signal representing a current limit and automatically adjust the current limit signal in response to a change in at least one of the input voltage and an output voltage.. . ... Analog Devices Global

09/07/17 / #20170255221

Voltage reference circuit

The present disclosure relates to a method and apparatus for generating a voltage reference. More particularly the present disclosure relates to a methodology and circuitry configured to provide an output signal that combines a proportional to absolute temperature component with a complimentary to absolute temperature component to generate a stable output which is not temperature dependent.. ... Analog Devices Global

08/31/17 / #20170250682

Compensation of baseline wander

A circuit for compensation of baseline voltage wander operating at an input of an isolator is disclosed. The circuit can compensate electronically the frequency response of an isolation circuit (e.g., a transformer) by increasing the pass band in the low frequency region in order to minimize the baseline wander caused by low inductance windings. ... Analog Devices Global

08/31/17 / #20170249820

Occupancy sensor

System and techniques for an occupancy sensor are described herein. Images from a camera can be received. ... Analog Devices Global

08/24/17 / #20170244388

Apparatus and methods for high linearity voltage variable attenuators

Provided herein are apparatus and methods for high linearity voltage variable attenuators (vvas). In certain configurations, a high linearity vva includes multiple shunt arms or circuits that operate in parallel with one another between a signal node and a first dc voltage, such as ground. ... Analog Devices Global

08/24/17 / #20170241939

Susceptance measurement for identifying biochemical sensors

Subject matter herein can include identifying a biochemical test strip assembly electrically, such as using the same test circuitry as can be used to perform an electrochemical measurement, without requiring use of optical techniques. The identification can include using information about a measured susceptance of an identification feature included as a portion of the test strip assembly. ... Analog Devices Global

08/17/17 / #20170237268

Analog/digital converter with charge rebalanced integrator

A charge rebalancing integration circuit can help keep an output node of a front-end integration circuit within a specified range, e.g., without requiring resetting of the integration capacitor. The process of monitoring and rebalancing the integration circuit can operate on a much shorter time base than the integration time period, which can allow for multiple charge balancing charge transfer events during the integration time period, and sampling of the integration capacitor once per integration time period, such as at the end of that integration time period. ... Analog Devices Global

08/17/17 / #20170235692

Data communication interface for processing data in low power systems

Improvements over existing data collection interfaces disclosed herein include, among other things, additional logic blocks (and associated timers, state machines, and registers) to off-load data collection and data processing prior to waking a microprocessor from a sleep mode. For example, an improved data collection interface collects a predetermined number of sensor values from a sensor while maintaining active a single communication session with the sensor over a pin of the interface. ... Analog Devices Global

08/10/17 / #20170225942

Active opening mems switch device

Microelectromechanical systems (mems) switches are described. The mems switches can be actively opened and closed. ... Analog Devices Global

07/20/17 / #20170207907

Circuits, systems, and methods for synchronization of sampling and sample rate setting

Techniques for synchronization between multiple sampling circuits using a single pin interface to control an output data rate are described. The frequency or rate of a signal on this pin can be automatically determined and used to accomplish the required output data rate. ... Analog Devices Global

07/20/17 / #20170207802

Highly integrated radio frequency transceiver

For small cells, transceivers demand high performance while maintaining system efficiency. The present disclosure describes a highly integrated cellular transceiver that offers such features by providing one or more digital functions on-chip, onto the same die in the cellular transceiver. ... Analog Devices Global

07/20/17 / #20170207801

Blocker detection based automatic gain control

Modular gain control based on blocker signal detection is disclosed herein. In a multi-stage gain control scheme for a receiver, the input stage gain or the pre-mixing stage gain can be controlled for effective blocker rejection based on detecting a blocker signal at a mixer, and the output stage gain or the post-mixing stage gain can be controlled to restore and maintain an appropriate output level after pre-mixing gain reduction performed for blocker rejection. ... Analog Devices Global

07/13/17 / #20170201091

Power node communication for device detection and control

Apparatus and techniques described herein can include a load circuit comprising a direct current (dc) input terminal, and a source circuit comprising a direct current (dc) output terminal coupled to the dc input terminal of the load circuit. The source circuit can include a source control circuit configured to provide a current-limited dc output voltage and monitor the current-limited dc output voltage to detect an authentication signal provided at the dc output terminal by the load circuit, the load circuit configured to modulate the voltage at the dc output terminal using a pull-down circuit. ... Analog Devices Global

07/06/17 / #20170194911

Low-voltage low-power variable gain amplifier

In high speed communication applications, e.g., optical communication, a variable gain amplifier is used for input signal amplitude normalization or for linear equalization. Traditionally a bipolar gilbert multiplier circuit is used. ... Analog Devices Global

07/06/17 / #20170194001

Microphone circuit assembly and system with speech recognition

The present invention relates in one aspect to a microphone circuit assembly for an external application processor such as a programmable digital signal processor. The microphone circuit assembly comprises a microphone preamplifier and analog-to-digital converter generate microphone signal samples at a first predetermined rate. ... Analog Devices Global

06/22/17 / #20170179975

Dither injection for continuous-time mash adcs

For continuous-time multi-stage noise shaping analog to digital converters (ct mash adcs), quantization noise cancellation often requires estimation of transfer functions, e.g., a noise transfer function of the front end modulator. To estimate the noise transfer function, a dither signal can be injected in the front end modulator. ... Analog Devices Global

06/22/17 / #20170179971

Frequency-domain adc flash calibration

A flash analog-to-digital converter (adc) includes comparators that convert an analog input signal to a digital output signal. Offsets of these comparators introduce noise and can hurt the performance of the adc. ... Analog Devices Global

06/22/17 / #20170179970

Flash analog-to-digital converter calibration

An analog-to-digital converter (adc) is a device that can include a reference shuffler and a loop filter. An adc can achieve better performance with incremental adjustment of a pointer of the reference shuffler, changing coefficients of the loop filter, and storing calibration codes of the adc in a non-volatile memory. ... Analog Devices Global

06/22/17 / #20170179969

Adaptive digital quantization noise cancellation filters for mash adcs

For continuous-time multi-stage noise shaping analog-to-digital converters (ct mash adcs), quantization noise cancellation often requires accurate estimation of transfer functions, e.g., a noise transfer function of the front end modulator and a signal transfer function of the back end modulator. To provide quantization noise cancellation, digital quantization noise cancellation filters adaptively tracks transfer function variations due to integrator gain errors, flash-to-dac timing errors, as well as the inter-stage gain and timing errors. ... Analog Devices Global

06/22/17 / #20170179968

Protection circuits for tunable resistor at continuous-time adc input

Continuous-time analog-to-digital converters (adcs) such as continuous-time delta-sigma adcs and continuous-time pipeline adcs, has input resistor structure at the input. The input resistor structure is typically tunable, and the tunability is usually provided by metal-oxide semiconductor field effect transistor (mosfet) switches. ... Analog Devices Global

06/22/17 / #20170178781

Devices, systems and methods including magnetic structures

A magnetic device may include a magnetic structure, a device structure, and an associated circuit. The magnetic structure may include a patterned layer of material having a predetermined magnetic property. ... Analog Devices Global

06/22/17 / #20170176507

Active antenna system and methods of determining intermodulation distortion performance

An active antenna test system comprising an active antenna unit comprising: a test signal generator arranged to generate at least a first test signal and at least one second test signal; a plurality of transmitter modules operably coupled to the test signal generator wherein the plurality of transmitter modules are arranged to simultaneously process the first test signal and at least one second test signal to produce at least one radio frequency test signal therefrom; and at least one receiver module arranged to process one or more signals falling in at least one spectral band determined to be susceptible to intermodulation distortion products caused by the at least one radio frequency test signal being generated from the first test signal and at least one second test signal; and an intermodulation determination module operably coupled to the at least one receiver module and arranged to determine a first received intermodulation performance. A first transmitter module of the plurality of transmitter modules is operably uncoupled from the test signal generator and at least a first test signal and at least one second test signal re-applied to the remaining transmitter modules, such that the intermodulation determination module determines a second received intermodulation performance in order to determine an intermodulation distortion contribution of the first transmitter module therefrom.. ... Analog Devices Global

06/15/17 / #20170169929

Inductive component for use in an integrated circuit, a transformer and an inductor formed as part of an integrated circuit

Inductive components, such as transformers, can be improved by the inclusion of a magnetic core. However, the benefit of having a core is lost if the core enters magnetic saturation. ... Analog Devices Global

06/01/17 / #20170155414

Low noise transconductance amplifiers

Provided herein are apparatus and methods for transconductance amplifiers, such as split cascode low-noise transconductance amplifiers (lntas). In an embodiment, an lnta includes split current paths each coupled to a different mixer by way of a different alternating current (ac) coupling capacitor. ... Analog Devices Global

06/01/17 / #20170155362

Local oscillator paths

Provided herein are oscillator paths between an oscillator and mixers. In an embodiment, the oscillator paths include a first path between an oscillator and a first mixer and a second path between the oscillator and the second mixer, in which the first path is enabled in a first state (e.g., a low band state) and the second path is enabled in a second state (e.g., a high band state). ... Analog Devices Global

06/01/17 / #20170154715

Electromagnetic flow sensor interface including sensor drive circuit

An interface circuit to an electromagnetic flow sensor is described. In an example, it can provide a dc coupled signal path from the electromagnetic flow sensor to an analog-to-digital converter (adc) circuit. ... Analog Devices Global

05/18/17 / #20170141736

Broadband envelope tracking

An envelope tracking scheme can be used, such as to modulate a supply node of a power amplifier circuit to improve efficiency. For example, a magnitude or amplitude envelope of a signal to be modulated can be scaled and used to drive a node, such as a drain, of the power amplifier circuit. ... Analog Devices Global

05/11/17 / #20170134019

Fet - bipolar transistor combination, and a switch comprising such a fet - bipolar transistor combination

A transistor switch device is provided that exhibits relatively good voltage capability and relatively easy drive requirements to turn the device on and off. This can reduce transient drive current flows that may perturb other components.. ... Analog Devices Global

05/11/17 / #20170133841

Overvoltage protection device, and a galvanic isolator in combination with an overvoltage protection device

Components can be damaged if they are exposed to excess voltages. A device is disclosed herein which can be placed in series with a component and a node that may be exposed to high voltages. ... Analog Devices Global

05/11/17 / #20170133363

Fet - bipolar transistor combination

A transistor switch device is provided that exhibits relatively good voltage capability and relatively easy drive requirements to turn the device on and off. This can reduce transient drive current flows that may perturb other components.. ... Analog Devices Global

05/11/17 / #20170133041

Low-complexity voice activity detection

Many processes for audio signal processing can benefit from voice activity detection, which aims to detect the presence of speech as opposed to silence or noise. The present disclosure describes, among other things, leveraging energy-based features of voice and insights on first and second formant frequencies of vowels to provide a low-complexity and low-power voice activity detector. ... Analog Devices Global

05/11/17 / #20170131368

Thin film resistive device for use in an integrated circuit, an integrated circuit including a thin film resistive device

Thin film resistive sensors typically include a number of resistive components. These components should be well matched in order for the sensor to provide accurate readings. ... Analog Devices Global

05/04/17 / #20170126222

Hot swap circuit management techniques for power line disturbances and faults

A device for controlling an electronic switch between a power supply and a load includes a sensing circuit to measure a current to the load and a control circuit to control operation of the electronic switch if the current exceeds a current limit. The control circuit includes a normal current circuit to output a first switch control current to the electronic switch and a boost current circuit to output a second switch control current to the electronic switch, the first switch control current being higher than the second switch control current.. ... Analog Devices Global

04/27/17 / #20170117602

Isolator and method of forming an isolator

An isolator device and a corresponding method of forming the isolator device to include first and second electrodes, a layer of first dielectric material between the first and second electrodes, and at least one region of second dielectric material between the layer of first dielectric material and at least one of the first and second electrodes. The second dielectric material has a higher relative permittivity than the first dielectric material.. ... Analog Devices Global

04/27/17 / #20170117084

Dielectric stack, an isolator device and method of forming an isolator device

An isolator device is provided comprising a body of first dielectric material between the first and second conductors, such as primary and secondary coils of a micro-transformer. A region of second dielectric material is provided between the body of first dielectric material and at least one of the first and second electrodes, wherein the second dielectric material has a higher relative permittivity than the first dielectric material. ... Analog Devices Global

04/13/17 / #20170104502

Digital predistortion and uptilt and cable communication

Otherwise incompatible digital predistortion and uptilt can be used together, such as in a cable television or other cable communications system having a frequency-dependent signal loss at high frequencies. The predistortion can be used to compensate for a nonlinear gain compression of a power amplifier at higher frequencies. ... Analog Devices Global

04/13/17 / #20170102418

Method and system for continuous off chip capacitor detection for linear regulators

Various embodiments efficiently detect the presence of an external capacitor electrically coupled to the output of a voltage regulator by perturbing the voltage output of the voltage regulator while the regulator is in operation and supplying, or ready to supply, regulated voltage to a load, and detecting the reaction of the regulator's output.. . ... Analog Devices Global

03/30/17 / #20170093375

Small area and low power iir filter structure

Embodiments of the present disclosure provide a digital filter module for use in receivers, particularly suitable for use in a narrow-band electromagnetic receiver. Design of the module is based on a recognition that providing to the module samples of a signal received by a receiver and sampled at a sampling frequency equal to four times the intermediate frequency of the receiver, eliminating zeros in the filter, and implementing the filter module as a resource-shared second-order filter structure that includes two sections advantageously enables saving some hardware components, particularly some multipliers and adders, in implementing a versatile digital filter module that can function either as two real filters or one complex filter. ... Analog Devices Global

03/30/17 / #20170089966

Capacitance measurement

Embodiments of the present invention may provide a method of measuring an unknown capacitance of a device. The method may comprise the steps of driving a test signal to a circuit system that includes a current divider formed by the device with unknown capacitance and a reference capacitor; mirroring a current developed in the reference capacitor to a second circuit system that includes a measurement impedance; measuring a voltage within the second circuit system; and deriving a capacitance of the unknown capacitance based on the measured voltage with reference to a capacitance of the reference capacitor and the measurement impedance.. ... Analog Devices Global

03/23/17 / #20170085263

Active device divider circuit with adjustable iq

An active voltage divider circuit is provided comprising: a first node; a second node; a third node; multiple fet load devices coupled in series between the first node and the second node; multiple first switches, each associated with a different fet load device and configured to selectably couple a respective associated bypass circuit between source and drain of its associated fet load device; and second switch circuitry configured to selectably couple a drain of a fet load device, from among the multiple fet load devices, to the third node.. . ... Analog Devices Global

03/16/17 / #20170074656

Dual mode gyroscope

A baw gyroscope is configured to operate with two pairs of orthogonal modes instead of a single pair in order to mitigate the impact of changes in gaps (e.g., introduced from external stresses such as thermal gradients, external shocks, mechanical stress/torque, etc.). Specifically, the baw gyroscope resonator is configured to be simultaneously driven to resonate with a two disparate resonant modes (referred to herein as the “fundamental” mode and the “compound” mode), with the same set of drive electrodes used to drive both resonant modes (i.e., all of the drive electrodes are used to drive the two drive modes). ... Analog Devices Global

03/09/17 / #20170067962

Remote evaluation tool

Remote evaluation, e.g., web-based evaluation, lowers the evaluation barrier by allowing an engineer to gain experience with an integrated circuit (ic) using a client (e.g. A web browser) on a remote computer (e.g., a machine remote from the ic being evaluated but local to the engineer) to activate a test set-up that is maintained at a location that is far away from the engineer.. ... Analog Devices Global

02/16/17 / #20170047149

Programmable impedance

The present application relates generally to programmable impedances and employs an auxiliary impedance in parallel to a primary programmable impedance to augment the performance of the primary programmable impedance at lower impedance values.. . ... Analog Devices Global

02/09/17 / #20170041552

Method of controlling a motor driven system, apparatus for controlling a motor driven system and a motor driven system controlled in accordance with the disclosed method

Actuators are used to move a variety of objects to desired positions. It is generally desirable that they can do this quickly without exhibiting overshoot or ringing. ... Analog Devices Global

02/09/17 / #20170040959

Apparatus and method for precharging a load

An output stage of a buffer or an amplifier connected to a switched capacitive load can operate in two phases to perform precharging and fine settling. The precharging and fine settling phases can be synchronized to the switching phases of the switched capacitive load connected to the amplifier. ... Analog Devices Global

01/26/17 / #20170025996

Computationally efficient arc detector with coherent sampling

Switching interference is a primary artifact which affects the accuracy of arc detectors. To address switching interference, conventional arc detectors employ computationally intensive techniques which are often designed specifically for a target application. ... Analog Devices Global

01/26/17 / #20170025594

Thermoelectric devices

An embodiment of a thermoelectric device may include a plurality of thermoelectric cells disposed between first and second planes. Each of the thermoelectric cells may include a thermoelectric element formed from a thermoelectric material of a single semiconductor type, the thermoelectric element including a first end, a second end, and a portion extending from the first end to the second end, the portion extending from the first end to the second end including at least two surfaces that face each other; and at least one conductive element electrically connected to and extending away from the second end of the thermoelectric element toward the first end of the thermoelectric element of another thermoelectric cell. ... Analog Devices Global

01/26/17 / #20170025497

Localized strain relief for an integrated circuit

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. ... Analog Devices Global

01/26/17 / #20170023506

Control circuit for use with a four terminal sensor, and measurement system including such a control circuit

A control circuit for use with a four terminal sensor, the sensor having first and second drive terminals and first and second measurement terminals, the control circuit arranged to drive at least one of the first and second drive terminals with an excitation signal, to sense a voltage difference between the first and second measurement terminals, and control the excitation signal such that the voltage difference between the first and second measurement terminals is within a target range of voltages, and wherein the control circuit includes n poles in its transfer characteristic and n−1 zeros in its transfer characteristic such that when a loop gain falls to unity the phase shift around a closed loop is not substantially 2π radians or a multiple thereof, where n is greater than 1.. . ... Analog Devices Global

01/12/17 / #20170012631

Phase-locked loop having a multi-band oscillator and method for calibrating same

A phase-locked loop (pll) comprising a multi-band oscillator and a memory configured to store control input for the oscillator. The pll is operable in a calibration mode in which the pll is configured to acquire a frequency controlled word (fcw) for the pll corresponding to a frequency generated by the oscillator in response to a first control input threshold on a first band of the oscillator; generate a frequency corresponding to said fcw on a second band of the oscillator adjacent to said first band; identify a second control input causing the oscillator to generate said frequency corresponding to said fcw and store said second control input in memory.. ... Analog Devices Global

01/12/17 / #20170011261

Video processing for human occupancy detection

Many conventional video processing algorithms attempting to detect human presence in a video stream often generate false positives on non-human movements such as plants moving in the wind, rotating fan, etc. To reduce false positives, a technique exploiting temporal correlation of non-human movements can accurately detect human occupancy while reject non-human movements. ... Analog Devices Global

01/05/17 / #20170003704

Low power bias current generator and voltage reference

A bias current generators that may be implemented in low power environments is described. The current generator can be implemented without using resistors and may be used to generate reference currents and voltages. ... Analog Devices Global

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