公开(公告)号：US20180309465A1

公开(公告)日：2018-10-25

申请号：US16024303

申请日：2018-06-29

Applicant: Analog Devices Global

Inventor： Patrick Pratt

IPC: H04B1/04 ,  H03F1/32 ,  H03F3/195

CPC classification number: H04B1/0475 ,  H03F1/3247 ,  H03F1/3294 ,  H03F3/195 ,  H03F2200/451 ,  H03F2201/3227 ,  H03F2201/3233 ,  H04B2001/0425

Abstract: 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. A nonlinear DPD circuit may be programmed to generate a pre-distorted signal nonlinear component based at least in part on the complex baseband signal. A mixer circuit programmed to generate a pre-distorted signal based at least in part on the pre-distorted signal linear component and the pre-distorted signal nonlinear component.

公开(公告)号：US10101414B2

公开(公告)日：2018-10-16

申请号：US15000006

申请日：2016-01-18

Applicant: Analog Devices Global

Inventor： Jan Kubik ,  Seamus P. Whiston ,  Padraig Michael Doran

IPC: G01R33/02 ,  G01R33/09

Abstract: 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. When a sensor is incorporated within an integrated circuit, the resistive components may be formed over, or under, metallic traces that form part of other components. As a result, the thin film resistive components are subjected to different levels of stress. This disclosure provides a structure that is arranged to mitigate the effects of stress.

公开(公告)号：US20180284178A1

公开(公告)日：2018-10-04

申请号：US15937363

申请日：2018-03-27

Applicant: Analog Devices Global

Inventor： Michal Brychta ,  Adrian Sherry

IPC: G01R31/02 ,  G01R31/08

Abstract: A fault detection scheme can include use of a relatively high injection impedance between an input port for analog measurements from a sensor and a stimulus generation circuit controlled in coordination with analog measurement. The stimulus generation circuit can provide a stimulus signal through the injection impedance. A magnitude of the injection impedance can be specified relative to a source impedance associated with a source (e.g., a sensor or other device) coupled to the input port. For example, a magnitude of the injection impedance can be specified to be larger than the source impedance or the injection impedance magnitude can be specified to be a multiple of the source impedance.

公开(公告)号：US20180252750A1

公开(公告)日：2018-09-06

申请号：US15910896

申请日：2018-03-02

Applicant: Analog Devices Global

Inventor： Seyed Amir Ali Danesh ,  Jonathan Ephraim David Hurwitz

IPC: G01R19/00 ,  H02H3/32 ,  H02H3/00 ,  H02H1/00 ,  G01R31/02 ,  G01R19/25 ,  G01R23/02 ,  G01R21/06 ,  G01R19/165 ,  G01R35/00

CPC classification number: G01R19/00 ,  G01R19/16547 ,  G01R19/2506 ,  G01R21/06 ,  G01R23/02 ,  G01R31/025 ,  G01R35/005 ,  H02H1/0015 ,  H02H3/006 ,  H02H3/32

Abstract: The present invention relates to current measurement apparatus. The current measurement apparatus comprises first and second measurement devices with each of the first and second measurement devices being operative to measure current in a respective one of a live conductor and a neutral conductor substantially simultaneously. The current measurement apparatus is operative to make plural different determinations in dependence on the substantially simultaneous current measurements.

公开(公告)号：US20180248527A1

公开(公告)日：2018-08-30

申请号：US15445389

申请日：2017-02-28

Applicant: Analog Devices Global

Inventor： Roderick McLachlan ,  Roberto Sergio Matteo Maurino

IPC: H03F3/45

CPC classification number: H03F1/32 ,  G05F1/561 ,  H03F1/3211 ,  H03F3/45475 ,  H03F2203/45528

Abstract: A converter circuit is provided that includes an amplifier circuit and further includes: a summing current resistor that exhibits nonlinear resistance coupled between a voltage node and a summing current node of the amplifier; a compensation resistor circuit includes resistors that exhibit nonlinear resistance; the compensation resistor circuit produces a compensation current at the summing current node that compensates for nonlinear current flow in the summing current resistor.

公开(公告)号：US10033179B2

公开(公告)日：2018-07-24

申请号：US14743396

申请日：2015-06-18

Applicant: Analog Devices Global Unlimited Company

Inventor： Padraig L. Fitzgerald ,  Eric James Carty

IPC: H02H9/04 ,  H01H59/00 ,  H01H9/54 ,  H01H61/00

Abstract: A method of and apparatus for protecting a MEMS switch is provided. The method and apparatus improve the integrity of MEMS switches by reducing their vulnerability to current flow through them during switching of the MEMS switch between on and off or vice versa. The protection circuit provides for a parallel path, known as a shunt, around the MEMS component. However, components within the shunt circuit can themselves be removed from the shunt when they are not required. This improves the electrical performance of the shunt when the switch is supposed to be in an off state.

公开(公告)号：US20180205319A1

公开(公告)日：2018-07-19

申请号：US15406014

申请日：2017-01-13

Applicant: Analog Devices Global

Inventor： Yue Zhuo ,  Baoxing Chen ,  Xin Yang ,  Tianting Zhao

IPC: H02M3/335

Abstract: Isolated DC-DC converters are described. A DC-DC converter is a device which converts a direct current (DC) signal from one voltage to another. An isolated DC-DC converter performs the conversion across an electrical isolation barrier separating two voltage domains. The signal converted from one voltage to another, and transferred from one voltage domain to another, may be a power signal. Described are isolated DC-DC converters which transfer a power signal from one voltage domain to another via an isolator, and a power feedback signal back across the isolator. The isolator is a transformer in some situations.

公开(公告)号：US20180198417A1

公开(公告)日：2018-07-12

申请号：US15401522

申请日：2017-01-09

Applicant: Analog Devices Global

Inventor： Sharad Vijaykumar ,  Gerard Mora-Puchalt

IPC: H03F1/30 ,  H03F1/26 ,  H03F3/45

CPC classification number: H03F1/301 ,  H03F1/26 ,  H03F3/45273 ,  H03F3/45753 ,  H03F2203/45462

Abstract: 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. The switching circuit also couples the second input differential signal to the second differential input stage and the reference voltage to the first differential input stage when the amplifier input signal is greater than the threshold signal.

公开(公告)号：US20180196101A1

公开(公告)日：2018-07-12

申请号：US15433862

申请日：2017-02-15

Applicant: Analog Devices Global

Inventor： Guangyang Qu ,  Yincai Tony Liu ,  Baotian Hao ,  Hanqing Wang ,  Hengfang Mei ,  Rengui Luo ,  Yimiao Zhao ,  Junbiao Ding

IPC: G01R31/28 ,  G01N27/416 ,  G01N27/12 ,  G01N33/00

CPC classification number: G01R31/2829 ,  G01N27/122 ,  G01N27/4163 ,  G01N33/0057 ,  G01R27/02 ,  G01R27/16 ,  G01R35/005

Abstract: 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.

公开(公告)号：US20180183436A1

公开(公告)日：2018-06-28

申请号：US15388726

申请日：2016-12-22

Applicant: Analog Devices Global

Inventor： Roderick McLachlan ,  Fergus Downey

IPC: H03K17/687

CPC classification number: H03K17/6872 ,  H03F3/45475 ,  H03F3/505 ,  H03F2203/5018

Abstract: 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.