公开(公告)号：US09641189B2

公开(公告)日：2017-05-02

申请号：US14747071

申请日：2015-06-23

Applicant: ANALOG DEVICES, INC.

Inventor： Mark D. Maddox ,  Michael Coln ,  Gary R. Carreau ,  Baozhen Chen

IPC: H03M1/12 ,  H03M1/10 ,  H03M1/46

CPC classification number: H03M1/1071 ,  H03M1/1038 ,  H03M1/462 ,  H03M1/468

Abstract: When reservoir capacitors are moved on-chip for individual bit decisions, a successive approximation register analog-to-digital converter (SAR ADC) has an addition source of error which can significantly affect the performance of the SAR ADC. Calibration techniques can be applied to measure and correct for such error in an SAR ADC using decide-and-set switching. Specifically, a calibration technique can expose the effective bit weight of each bit under test using a plurality of special input voltages and storing a calibration word for each bit under test to correct for the error. Such a calibration technique can lessen the need to store a calibration word for each possible output word to correct the additional source of error. Furthermore, another calibration technique can expose the effective bit weight of each bit under test without having to generate the plurality of special input voltages.

公开(公告)号：US09083369B2

公开(公告)日：2015-07-14

申请号：US13891988

申请日：2013-05-10

Applicant: ANALOG DEVICES, INC.

Inventor： Michael Coln ,  Lalinda D. Fernando

IPC: H03M1/12

CPC classification number: H03M1/12 ,  H03M1/121

Abstract: The present disclosure provides for split-path data acquisition chains and associated signal processing methods. An exemplary integrated circuit for providing a split-path data acquisition signal chain includes an input terminal for receiving an analog signal; an output terminal for outputting a digital signal; and at least two frequency circuit paths coupled with the input terminal and the output terminal, wherein the at least two frequency circuit paths are configured to process different frequency components of the analog signal and recombine the processed, different frequency components, thereby providing the digital signal.

Abstract translation: 本公开提供了分离路径数据采集链和相关联的信号处理方法。 用于提供分路数据采集信号链的示例性集成电路包括用于接收模拟信号的输入端; 输出端子，用于输出数字信号; 以及与所述输入端和所述输出端耦合的至少两个频率电路路径，其中所述至少两个频率电路路径被配置为处理所述模拟信号的不同频率分量并重组所处理的不同频率分量，从而提供所述数字信号 。

公开(公告)号：US09413319B2

公开(公告)日：2016-08-09

申请号：US14222877

申请日：2014-03-24

Applicant: Analog Devices, Inc.

Inventor： Lalinda D. Fernando ,  Michael Coln

IPC: H03G3/30 ,  H03M1/10 ,  H03M1/12

CPC classification number: H03G3/30 ,  H03G3/3052 ,  H03M1/1009 ,  H03M1/1028 ,  H03M1/12

Abstract: Apparatus and methods calibrate one or more gain ranges for errors. A system can identify offset error and amplification error that occurs when the system transitions from amplifying an input signal by a first gain factor to amplifying the input signal by a second gain factor. To identify the amplification error, the system can compare the slope of the data signal in a source or reference gain range with the slope of the data signal in the destination gain range. To identify the offset error, the system can compare the amplitude of the data signal in a destination gain range with an expected value in the destination gain range.

Abstract translation: 设备和方法校准一个或多个增益范围的错误。 系统可以识别当系统从第一增益因子放大输入信号转换到第二增益因子来放大输入信号时发生的偏移误差和放大误差。 为了识别放大误差，系统可以将源或参考增益范围内的数据信号的斜率与目标增益范围内数据信号的斜率进行比较。 为了识别偏移误差，系统可以将目的地增益范围内的数据信号的幅度与目标增益范围内的期望值进行比较。

公开(公告)号：US20150270818A1

公开(公告)日：2015-09-24

申请号：US14222877

申请日：2014-03-24

Applicant: Analog Devices, Inc.

Inventor： Lalinda D. Fernando ,  Michael Coln

IPC: H03G3/30

CPC classification number: H03G3/30 ,  H03G3/3052 ,  H03M1/1009 ,  H03M1/1028 ,  H03M1/12

Abstract: Apparatus and methods calibrate one or more gain ranges for errors. A system can identify offset error and amplification error that occurs when the system transitions from amplifying an input signal by a first gain factor to amplifying the input signal by a second gain factor. To identify the amplification error, the system can compare the slope of the data signal in a source or reference gain range with the slope of the data signal in the destination gain range. To identify the offset error, the system can compare the amplitude of the data signal in a destination gain range with an expected value in the destination gain range.

Abstract translation: 设备和方法校准一个或多个增益范围的错误。 系统可以识别当系统从第一增益因子放大输入信号转换到第二增益因子来放大输入信号时发生的偏移误差和放大误差。 为了识别放大误差，系统可以将源或参考增益范围内的数据信号的斜率与目标增益范围内数据信号的斜率进行比较。 为了识别偏移误差，系统可以将目的地增益范围内的数据信号的幅度与目标增益范围内的期望值进行比较。

公开(公告)号：US20140333463A1

公开(公告)日：2014-11-13

申请号：US13891988

申请日：2013-05-10

Applicant: ANALOG DEVICES, INC.

Inventor： Michael Coln ,  Lalinda D. Fernando

IPC: H03M1/12

CPC classification number: H03M1/12 ,  H03M1/121

Abstract: The present disclosure provides for split-path data acquisition chains and associated signal processing methods. An exemplary integrated circuit for providing a split-path data acquisition signal chain includes an input terminal for receiving an analog signal; an output terminal for outputting a digital signal; and at least two frequency circuit paths coupled with the input terminal and the output terminal, wherein the at least two frequency circuit paths are configured to process different frequency components of the analog signal and recombine the processed, different frequency components, thereby providing the digital signal.

Abstract translation: 本公开提供了分离路径数据采集链和相关联的信号处理方法。 用于提供分路数据采集信号链的示例性集成电路包括用于接收模拟信号的输入端; 输出端子，用于输出数字信号; 以及与所述输入端和所述输出端耦合的至少两个频率电路路径，其中所述至少两个频率电路路径被配置为处理所述模拟信号的不同频率分量并重组所处理的不同频率分量，从而提供所述数字信号 。