公开(公告)号：US09941897B1

公开(公告)日：2018-04-10

申请号：US15692812

申请日：2017-08-31

Applicant: Analog Devices Global

Inventor： Hongxing Li ,  Roberto Sergio Matteo Maurino

IPC: H03M1/66 ,  H03M1/20 ,  H03M1/06 ,  H03M1/46

CPC classification number: H03M1/201 ,  H03M1/0639 ,  H03M1/0673 ,  H03M1/462 ,  H03M1/66 ,  H03M1/68 ,  H03M3/33 ,  H03M3/42 ,  H03M3/50

Abstract: A higher accuracy ADC circuit (e.g., in which the number of bits of the ADC circuit is twelve or greater) may need calibration multiple times during its working life to avoid bit weight errors. Described are techniques to address DAC element ratio errors between DAC element clusters in a DAC circuit in order to maintain the linear performance of analog-to-digital converter (ADC) circuits and digital-to-analog converter (DAC) circuits.

公开(公告)号：US09939464B2

公开(公告)日：2018-04-10

申请号：US15099308

申请日：2016-04-14

Applicant: Analog Devices Global

Inventor： Stephen James Martin Wood ,  Jonathan Ephraim David Hurwitz ,  Seyed Amir Ali Danesh

IPC: G01R27/08 ,  G01R19/00 ,  G01R15/14 ,  G01R1/20 ,  G01R11/25 ,  G01R15/04 ,  G01R21/14 ,  G01R27/02 ,  G01R35/04 ,  G01R23/02 ,  G01R21/00 ,  G01R19/02 ,  G01R27/16 ,  G01R27/26 ,  G01R27/28

CPC classification number: G01R15/146 ,  G01R1/203 ,  G01R11/25 ,  G01R15/04 ,  G01R15/14 ,  G01R19/0084 ,  G01R19/0092 ,  G01R19/02 ,  G01R21/00 ,  G01R21/133 ,  G01R21/14 ,  G01R23/02 ,  G01R27/02 ,  G01R27/16 ,  G01R27/26 ,  G01R27/28 ,  G01R35/04

Abstract: The present invention relates to current measurement apparatus 100. The current measurement apparatus 100 comprises a measurement arrangement 110, 114 which is configured to be disposed in relation to a load 108 which draws a current signal, the measurement arrangement being operative when so disposed to measure the load drawn current signal. The current measurement apparatus 100 also comprises a signal source 112 which is operative to apply a reference input signal to the measurement arrangement 110, 114 whereby an output signal from the measurement arrangement comprises a load output signal corresponding to the load drawn current signal and a reference output signal corresponding to the reference input signal. The current measurement apparatus 100 further comprises processing apparatus 116 which is operative to receive the output signal and to make a determination in dependence on the reference output signal and the load output signal, the determination being in respect of at least one of the load drawn current signal and electrical power consumed by the load.

公开(公告)号：US09927680B2

公开(公告)日：2018-03-27

申请号：US14821395

申请日：2015-08-07

Applicant: ANALOG DEVICES GLOBAL

Inventor： Javier Calpe Maravilla ,  Eoin E. English ,  Rafael Mahiques ,  Jose Carlos Canada ,  Maria Jose Martinez

IPC: G03B3/10

Abstract: 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. Some actuators are required to respond very quickly and examples of these are voice coil drivers used to move lenses in autofocus cameras provided in everyday devices such as smart phones and tablets. A rapid two step controller scheme had already been disclosed by Analog Devices Inc. While the scheme works well, it can only be used reliably if the resonant frequency of the actuator is known to within 2 or 3%. The inventors have discovered that the resonant frequency of an actuator unexpectedly changes as a function of position. This disclosure provides ways of modifying the control scheme to cope with changes in resonant frequency.

公开(公告)号：US09917558B1

公开(公告)日：2018-03-13

申请号：US15264432

申请日：2016-09-13

Applicant: Analog Devices Global

Inventor： Andreas Koch

IPC: H03F3/45

CPC classification number: H03F3/45475 ,  H03F3/45 ,  H03F3/45941 ,  H03F2200/261 ,  H03F2200/481 ,  H03F2203/45101 ,  H03F2203/45138 ,  H03F2203/45424 ,  H03F2203/45426 ,  H03F2203/45586

Abstract: 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. In an example, a difference amplifier circuit can include first and second amplifiers, first and second buffer amplifiers, a first feedback voltage divider coupled between an output of the first buffer amplifier and an output of the second amplifier, and a second feedback voltage divider coupled between an output of the second buffer amplifier and an output of the first amplifier.

公开(公告)号：US09912358B2

公开(公告)日：2018-03-06

申请号：US14874883

申请日：2015-10-05

Applicant: ANALOG DEVICES GLOBAL

Inventor： Patrick Joseph Pratt ,  Peadar Antony Forbes

IPC: H04B1/04 ,  H04B1/10 ,  H04B1/525

CPC classification number: H04B1/0475 ,  H04B1/1018 ,  H04B1/525

Abstract: A method of reducing the noise from a transmitter at an associated receiver is disclosed. Noise contributions in active channels are identified and used to update a shared noise cancellation filter. Excluding signals from inactive channels speeds up the filter convergence to a near optimal solution. Sharing a filter across multiple channels reduces component count and power consumption.

公开(公告)号：US20180062071A1

公开(公告)日：2018-03-01

申请号：US15681904

申请日：2017-08-21

Applicant: Analog Devices Global

Inventor： David Frank Bolognia ,  Christopher W. Hyde ,  Jochen Schmitt ,  Vikram Venkatadri

IPC: H01L43/02 ,  H01L23/538 ,  H01L25/04 ,  H01L23/31 ,  H01L43/08 ,  H01L25/16 ,  G01R33/09 ,  G01R33/00 ,  A61B5/00 ,  A61B5/06

CPC classification number: H01L43/02 ,  A61B5/062 ,  A61B5/063 ,  A61B5/6852 ,  A61B2017/00526 ,  A61B2034/2048 ,  A61B2034/2051 ,  A61B2090/064 ,  A61B2090/397 ,  G01R33/0047 ,  G01R33/091 ,  H01L23/3121 ,  H01L23/5386 ,  H01L23/5387 ,  H01L25/04 ,  H01L25/16 ,  H01L43/08

Abstract: 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. The first and second integrated device dies are angled relative to one another about the longitudinal axis by a fixed non-parallel angle.

公开(公告)号：US20180059707A1

公开(公告)日：2018-03-01

申请号：US15248694

申请日：2016-08-26

Applicant: Analog Devices Global

Inventor： Stefan Marinca

IPC: G05F3/26

CPC classification number: G05F3/267

Abstract: 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. The base current from one of the pair of transistors is used to increase the voltage drop across one of the compensation resistors. The base current from the other of the pair of transistors is used to decrease the voltage drop across another of the compensation resistors, by an equal amount. The compensation resistors are connected in series with the resistor which reflects the difference in base-emitter voltage (ΔVBE). The circuit output is measured across the series connected resistors. As such, the base currents are compensated for at the output.

公开(公告)号：US09893025B2

公开(公告)日：2018-02-13

申请号：US14852380

申请日：2015-09-11

Applicant: Analog Devices Global

Inventor： Yusuf Alperen Atesal ,  Turusan Kolcuoglu

IPC: H01L23/66 ,  H01L23/498 ,  H01L23/64 ,  H01L23/00 ,  H04B1/40

CPC classification number: H01L23/66 ,  H01L23/49838 ,  H01L23/642 ,  H01L23/645 ,  H01L24/48 ,  H01L24/49 ,  H01L2223/6611 ,  H01L2224/05553 ,  H01L2224/48157 ,  H01L2224/49171 ,  H01L2224/49175 ,  H01L2924/00014 ,  H01L2924/10161 ,  H01L2924/1421 ,  H04B1/40 ,  H01L2224/45099 ,  H01L2224/05599 ,  H01L2224/45015 ,  H01L2924/207 ,  H01L2224/85399

Abstract: A high isolation wideband switch is disclosed. In one aspect, the switch includes an integrated circuit package having an integrated circuit die with a first plurality of leads that is positioned on a package substrate that has a second plurality of leads. The first leads of the integrated circuit die are connected to the second the leads of the package substrate via bond wires and a first electrical coupling occurs between the first leads and the integrated circuit die in response to an RF signal applied to the integrated circuit package. The bond wires have a second electrical coupling in response to the RF signal and the bond wires are arranged such that the second electrical coupling is matched to the first electrical coupling within a selected frequency band so as to reduce the overall electrical coupling of the integrated circuit package for RF signals within the selected frequency band.

公开(公告)号：US20180035910A1

公开(公告)日：2018-02-08

申请号：US15230637

申请日：2016-08-08

Applicant: Analog Devices Global

Inventor： José Carlos Conchell Añó

IPC: A61B5/053 ,  A61B5/00

CPC classification number: A61B5/0531 ,  A61B5/0022 ,  A61B5/02055 ,  A61B5/112 ,  A61B5/165 ,  A61B5/681 ,  A61B5/7203 ,  A61B5/7225 ,  A61B5/7257 ,  A61B2560/0242 ,  A61B2562/0209

Abstract: 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. The AC excitation signal source can produce an AC excitation signal having a predetermined excitation frequency, such as about 100 or 120 Hertz (Hz). The analog-to-digital (A-to-D) converter can include a sample-and-hold circuit that operates at a predetermined sampling frequency, such as about four times (4×) the predetermined excitation frequency of 100 or 120 Hz. The DFT processor can generate complex frequency domain representations of digitized, sampled voltage level sequences provided by the A-to-D converter for use in obtaining measures of a user's skin impedance or skin conductance.

公开(公告)号：US20170363664A1

公开(公告)日：2017-12-21

申请号：US15185603

申请日：2016-06-17

Applicant: Analog Devices Global

Inventor： Jonathan Ephraim David Hurwitz ,  Seyed Amir Ali Danesh ,  William Michael James Holland ,  John Stuart

IPC: G01R19/25 ,  G01R35/00 ,  G01R21/133

Abstract: 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.