公开(公告)号：US10103744B1

公开(公告)日：2018-10-16

申请号：US15485919

申请日：2017-04-12

Applicant: Analog Devices Global

Inventor： Avinash Gutta ,  Venkata Aruna Srikanth Nittala ,  Abhilasha Kawle

IPC: H03M3/00 ,  H03M1/12

Abstract: A delta sigma modulator circuit comprises a forward circuit path including a first integrator stage and an analog-to-digital converter (ADC) circuit, wherein a transfer function of the forward circuit path includes a signal gain element of m, wherein m is a positive integer; an input path to the first integrator stage, wherein a transfer function of the input path includes a signal gain element of l/m; and a feedback circuit path operatively coupled to an output of the ADC circuit and an inverting input of an op amp of the first integrator stage, wherein the feedback circuit path includes at least a first digital-to-analog converter (DAC) circuit and a transfer function of the feedback circuit path includes a signal gain element of l/m.

公开(公告)号：US20180275280A1

公开(公告)日：2018-09-27

申请号：US15698491

申请日：2017-09-07

Applicant: Analog Devices Global

Inventor： Yalcin Alper EKEN ,  Alp OGUZ

IPC: G01S17/93 ,  H03F1/08 ,  H03F1/32 ,  H04B10/69 ,  H03F1/26 ,  H03F3/45 ,  G01S7/483

CPC classification number: G01S17/93 ,  G01S7/483 ,  G01S7/4861 ,  G01S7/4868 ,  H03F1/08 ,  H03F1/26 ,  H03F1/32 ,  H03F3/08 ,  H03F3/45475 ,  H03F2200/66 ,  H04B10/693

Abstract: A system and method for operating a high dynamic range analog front-end receiver for long range LIDAR with a transimpedance amplifier (TIA) include a clipping circuit to prevent saturation of the TIA. The output of the clipping circuit is connected via a diode or transistor to the input of the TIA and regulated such that the input voltage of the TIA remains close to or is only slightly above the saturation threshold voltage of the TIA. The regulation of the input voltage of the TIA can be improved by connecting a limiting resistor in series with the diode or transistor. A second clipping circuit capable of dissipating higher input currents and thus higher voltages may be connected in parallel with the first clipping circuit. A resistive element may be placed between the first and second clipping circuits to further limit the input current to the TIA.

公开(公告)号：US10069531B2

公开(公告)日：2018-09-04

申请号：US15289614

申请日：2016-10-10

Applicant: Analog Devices Global

Inventor： Andreas Koch ,  Ralph Patrick McCormick

IPC: H04B3/30 ,  H04B1/56 ,  G11C7/06

Abstract: An Ethernet or other communications module can amplify and reinforce a signal received from a non-local source without requiring a transformer or other magnetic component. A semiconductor integrated difference amplifier circuit can be used to amplify and reinforce a differential mode component of the received signal, while also attenuating a common mode component of the received signal. A transmission compensation network can generate a phase-shifted version of a locally transmitted signal being placed on the same communication terminals as the received signal during full duplex communications, for cancellation of such locally transmitted signal at inputs of a local receiver circuit. This can enhance detection of the received signal generated by the non-local source.

公开(公告)号：US20180249143A1

公开(公告)日：2018-08-30

申请号：US15442418

申请日：2017-02-24

Applicant: Analog Devices Global

Inventor： Javier Calpe Maravilla ,  Eoin English ,  Maurizio Zecchini ,  Chao Wang

IPC: H04N13/02 ,  G01S17/89 ,  G01S7/481

Abstract: Aspects of the embodiments are directed to time-of-flight (ToF) imaging systems and method for image processing. The ToF imaging system can include a depth sensor; a light steering device; a photodetector; and an image processor. The ToF imaging system can be configured to acquiring a first image of a scene by the photodetector; identifying one or more regions of interest of the scene from the first image; and capturing a depth map of at least one of the one or more regions of interest.

公开(公告)号：US20180226878A1

公开(公告)日：2018-08-09

申请号：US15443950

申请日：2017-02-27

Applicant: Analog Devices Global

Inventor： Bin Shao ,  Sean Kowalik ,  Alan S. Walsh ,  Danzhu Lu

IPC: H02M1/12

CPC classification number: H02M1/12 ,  G01S7/484 ,  G01S7/4865 ,  H01S5/0428 ,  H02M1/08 ,  H02M1/143 ,  H02M3/158 ,  H02M3/33507 ,  H03M1/808

Abstract: This application discusses techniques for reducing the energy of an output ripple in a voltage converter at a switching frequency of the voltage converter. In certain examples, an amplitude of a reference voltage can be modulated with a time-varying random value or pseudo-random value to provide a reduction in the energy of the output ripple at the switching frequency of the voltage converter.

公开(公告)号：US20180205320A1

公开(公告)日：2018-07-19

申请号：US15408948

申请日：2017-01-18

Applicant: Analog Devices Global

Inventor： Gavin Galloway

IPC: H02M3/335 ,  H02M1/08 ,  H02M1/32 ,  H02M1/36

CPC classification number: H02M3/33523 ,  H02M1/08 ,  H02M1/32 ,  H02M1/36 ,  H02M3/335 ,  H02M3/33507 ,  H02M2001/0009 ,  H02M2001/325

Abstract: A flyback power conversion circuit can be operated by selectively establishing and interrupting a current through a first inductance to store energy. A portion of the energy from a second inductance can be transferred to a storage device to provide an output voltage, where the second inductance is magnetically coupled to the first inductance. Information transmitted across an isolation barrier can be monitored, such as information indicative of the output voltage. The monitoring can include detecting whether information from at least two sources is consistent. An operating mode of the flyback power conversion circuit can be selected, such as response to the detecting whether the information from at least two sources is consistent, or whether valid information is being transmitted across the isolation barrier, or in response to one or more other criteria.

公开(公告)号：US10027338B2

公开(公告)日：2018-07-17

申请号：US15618620

申请日：2017-06-09

Applicant: Analog Devices Global

Inventor： Dennis A. Dempsey ,  Harvey T. Mercado

IPC: H03M1/06 ,  H03M1/08

Abstract: 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.

公开(公告)号：US10008115B2

公开(公告)日：2018-06-26

申请号：US15056645

申请日：2016-02-29

Applicant: Analog Devices Global

Inventor： Raka Singh

IPC: G08G1/14 ,  G08G1/16 ,  G06K9/00 ,  G06K9/46 ,  G06K9/66

CPC classification number: G08G1/141 ,  G06K9/00771 ,  G06K9/00812 ,  G06K9/4604 ,  G06K9/66 ,  G08G1/168

Abstract: System and techniques for a visual vehicle parking occupancy sensor are described herein. A color image, including a parking space, is received from a camera. A cascaded search for vehicle features in a hue-saturation-value (HSV) converted version of the color image is performed to produce search results. A search for macro vehicle features in the color image is also performed to produce an indication of found macro vehicle features when the search results are of a first type. An occupancy indicator is provided based on the search results when the search results are of a second type and based on the indication otherwise.

公开(公告)号：US20180159523A1

公开(公告)日：2018-06-07

申请号：US15370564

申请日：2016-12-06

Applicant: Analog Devices Global

Inventor： Jofrey G. Santillan ,  David Aherne

IPC: H03K17/16

CPC classification number: H03K17/165 ,  H03K2217/0054

Abstract: 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. Upon the main switch being controlled to switch off, a pulse generator circuit controls a charge storage switch to switch on to transfer the charge injected from the main switch to the charge storage device and then switch off. A dissipation circuit dissipates the charge from the charge storage device to a dissipating node.

公开(公告)号：US09948315B2

公开(公告)日：2018-04-17

申请号：US15618392

申请日：2017-06-09

Applicant: Analog Devices Global

Inventor： Dennis A. Dempsey

IPC: H03M1/10

CPC classification number: H03M1/1009 ,  H03M1/0881 ,  H03M1/66

Abstract: 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. A DAC is provided with some in built logic to assist in reducing the load on the devices driving the DAC. The DAC may include a library of functions that it can apply to the input words to modify transitions in the analog output words. The DAC may further include a health checking system for monitoring the digital words being supplied to the DAC and raising a concern, and taking action if required, if the sequence of words is unlikely to be correct or beyond the target operating range.