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    APPARATUS AND METHODS FOR AMPLIFIER INPUT-OVERVOLTAGE PROTECTION WITH LOW LEAKAGE CURRENT
    2.
    发明申请
    APPARATUS AND METHODS FOR AMPLIFIER INPUT-OVERVOLTAGE PROTECTION WITH LOW LEAKAGE CURRENT 有权

    公开(公告)号：US20210384870A1

    公开(公告)日：2021-12-09

    申请号：US16946090

    申请日：2020-06-05

    Applicant: Analog Devices, Inc.

    Inventor： Arthur J. Kalb ,  Yoshinori Kusuda

    IPC: H03F1/52 ,  H02H3/20 ,  H02M1/32

    Abstract: Apparatus and methods for amplifier input-overvoltage protection with low leakage current are provided herein. In certain embodiments, amplifier input circuitry for an amplifier includes a pair of input terminals, a pair of input transistors each having a control input (for instance, a transistor gate), a pair of protection transistors each connected between one of the input terminals and the control input of a corresponding one of the input transistors, and a bidirectional clamp connected between the control inputs of the input transistors. Implementing the amplifier input circuitry in this manner provides a number of advantages including, but not limited to, robust protection against input overvoltage and low input-leakage current.

    Apparatus and methods for chopper amplifiers
    4.
    发明授权
    Apparatus and methods for chopper amplifiers 有权
    斩波放大器的装置和方法

    公开(公告)号：US09356568B2

    公开(公告)日：2016-05-31

    申请号：US14334569

    申请日：2014-07-17

    Applicant: Analog Devices, Inc.

    Inventor： Jie Zhou ,  Arthur J. Kalb ,  Mark D. Reisiger

    IPC: H03F3/393 ,  H03F3/45

    CPC classification number: H03F3/393 ,  H03F3/45192 ,  H03F3/45775 ,  H03F2200/271 ,  H03F2203/45048

    Abstract: Apparatus and methods for chopper amplifiers are provided herein. In certain configurations, a chopper amplifier includes at least one differential transistor bank including a selection circuit and a plurality of transistors. The selection circuit can select a first portion of the transistors for operation in a first transistor group and a second portion of the transistors for operation in a second transistor group. During calibration, the chopper amplifier's input offset can be observed for different transistor configurations of the differential transistor banks. Although the transistors of a particular bank can be designed to have about the same drive-strength and/or geometry, the chopper amplifier can have a different input offset in different transistor configurations due to manufacturing mismatch between transistors, such as process variation. The chopper amplifier can be programmed to operate with the selected transistor configurations of the differential transistor banks to provide the amplifier with low input offset.

    Abstract translation: 本文提供了斩波放大器的装置和方法。 在某些配置中，斩波放大器包括至少一个包括选择电路和多个晶体管的差分晶体管组。 选择电路可以选择用于在第一晶体管组中操作的晶体管的第一部分和用于在第二晶体管组中操作的晶体管的第二部分。 在校准期间，可以对差分晶体管组的不同晶体管配置观察到斩波放大器的输入偏移。 尽管特定存储体的晶体管可被设计成具有大致相同的驱动强度和/或几何形状，但是由于晶体管之间的制造失配（例如工艺变化），斩波放大器可以在不同的晶体管配置中具有不同的输入偏移。 斩波放大器可以编程为与差分晶体管组的选定晶体管配置一起工作，为放大器提供低输入偏移。

    FILTER DESIGN TOOL
    5.
    发明申请
    FILTER DESIGN TOOL 有权
    过滤器设计工具

    公开(公告)号：US20140137069A1

    公开(公告)日：2014-05-15

    申请号：US13711038

    申请日：2012-12-11

    Applicant: ANALOG DEVICES, INC.

    Inventor： Matthew N. Duff ,  Arthur J. Kalb

    IPC: G06F17/50

    CPC classification number: G06F17/5063 ,  H03H11/1221 ,  H03H11/1265 ,  H03H11/1286

    Abstract: A method according to an embodiment of a filter design tool is provided and includes receiving filter parameters for an analog filter through a user interface, where the filter parameters include an optimization parameter related to an application requirement of the analog filter, optimizing the filter for the optimization parameter, calculating a design output based on the optimized filter, and displaying the design output on the user interface. The method can further include receiving viewing parameters that specify the design output to be displayed. In various embodiments, the user interface includes an input area, a viewing area and a window area in one or more pages, where the input area is contiguous to the viewing area in at least one page. The filter parameters can be entered in the input area and the design output is calculated and displayed in the contiguous viewing area substantially immediately.

    Abstract translation: 提供了根据滤波器设计工具的实施例的方法，并且包括通过用户接口接收用于模拟滤波器的滤波器参数，其中滤波器参数包括与模拟滤波器的应用需求相关的优化参数， 优化参数，基于优化过滤器计算设计输出，并在用户界面上显示设计输出。 该方法还可以包括接收指定要显示的设计输出的观看参数。 在各种实施例中，用户界面包括输入区域，观看区域和一个或多个页面中的窗口区域，其中输入区域与至少一个页面中的观看区域相邻。 过滤器参数可以输入到输入区域，并且设计输出被计算并基本上立即显示在连续的观察区域中。

    Apparatus and methods for amplifier input-overvoltage protection with low leakage current
    6.
    发明授权
    Apparatus and methods for amplifier input-overvoltage protection with low leakage current 有权

    公开(公告)号：US12132452B2

    公开(公告)日：2024-10-29

    申请号：US16946090

    申请日：2020-06-05

    Applicant: Analog Devices, Inc.

    Inventor： Arthur J. Kalb ,  Yoshinori Kusuda

    IPC: H03F1/52 ,  H02H3/20 ,  H02M1/32

    CPC classification number: H03F1/52 ,  H02H3/20 ,  H02M1/32 ,  H03F2200/441

    Abstract: Apparatus and methods for amplifier input-overvoltage protection with low leakage current are provided herein. In certain embodiments, amplifier input circuitry for an amplifier includes a pair of input terminals, a pair of input transistors each having a control input (for instance, a transistor gate), a pair of protection transistors each connected between one of the input terminals and the control input of a corresponding one of the input transistors, and a bidirectional clamp connected between the control inputs of the input transistors. Implementing the amplifier input circuitry in this manner provides a number of advantages including, but not limited to, robust protection against input overvoltage and low input-leakage current.

    Multiplexed sigma-delta analog-to-digital converter
    7.
    发明授权
    Multiplexed sigma-delta analog-to-digital converter 有权

    公开(公告)号：US10355709B1

    公开(公告)日：2019-07-16

    申请号：US16111440

    申请日：2018-08-24

    Applicant: Analog Devices, Inc.

    Inventor： Yogesh Jayaraman Sharma ,  Arthur J. Kalb

    IPC: H03M3/00

    Abstract: A sigma-delta ADC circuit with an analog loop filter circuit can be multiplexed between different inputs by flushing the memory of the analog loop filter integrators and the digital decimation filter and filling it with new data for the current input. However, filling the memory can be slow with respect to the sampling frequency because the information about past history has to be built up before meaningful output data can be generated. Thus, the multiplexing rate between channels using a sigma-delta ADC circuit can be slowed by such memory flushing. A multiplexed sigma-delta ADC circuit is described that can overcome these problems so as to be able to support cycle-by-cycle sampling of multiple channels. These techniques can provide a fast sigma-delta analog-to-digital converter (ADC) circuit that is small in area and that can multiplex over a number of channels dynamically.

    Electrical networks and methods of forming the same
    9.
    发明授权
    Electrical networks and methods of forming the same 有权
    电网及其形成方法

    公开(公告)号：US08884646B2

    公开(公告)日：2014-11-11

    申请号：US14084050

    申请日：2013-11-19

    Applicant: Analog Devices, Inc.

    Inventor： Arthur J. Kalb ,  Evaldo M. Miranda

    IPC: H03K19/003

    CPC classification number: H03K17/56 ,  H03H7/40 ,  H03H11/28

    Abstract: Electrical networks are formed to produce an approximation of at least one desired performance characteristic, based on the recognition that fabrication variations introduce slight differences in electronic sub-networks which were intended to be identical. These fabrication differences are turned to an advantage by providing a pool of sub-networks, and then selectively connecting particular combinations of these sub-networks to implement networks that approximate the desired performance characteristics. The sub-networks are of like kind (e.g., resistors) and have a like measure.

    Abstract translation: 基于认识到制造变化引入旨在相同的电子子网络的轻微差异，形成电网络以产生至少一个期望的性能特征的近似。 通过提供一个子网络池，然后选择性地连接这些子网络的特定组合来实现近似所期望的性能特征的网络，这些制造差异变得有利。 子网络类似（例如，电阻器）并且具有相似的测量。

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