公开(公告)号：US20160294331A1

公开(公告)日：2016-10-06

申请号：US14675087

申请日：2015-03-31

Applicant: Analog Devices, Inc.

Inventor： Evgueni Ivanov

IPC: H03F1/26 ,  H03F3/393 ,  H03F1/02

CPC classification number: H03F1/26 ,  H03F1/0205 ,  H03F3/393 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/45753 ,  H03F3/45977 ,  H03F2200/249 ,  H03F2200/375 ,  H03F2200/78 ,  H03F2203/45212 ,  H03F2203/7212

Abstract: Apparatus and methods for digitally-assisted feedback offset correction are provided herein. In certain configurations, an amplifier includes amplification circuitry for providing amplification to an input signal and chopping circuitry for compensating for an input offset voltage of the amplifier. Additionally, the amplifier further includes a digitally-assisted feedback offset correction circuit, which includes a chopping ripple detection circuit, a feedback-path chopping circuit, a digital correction control circuit, and an offset correction circuit. The chopping ripple detection circuit generates a detected ripple signal based on detecting an output ripple of the amplifier. Additionally, the feedback-path chopping circuit demodulates the detected ripple signal using the amplifier's chopping clock signal. The digital correction control circuit receives the demodulated ripple signal, which the digital correction control circuit uses to control a value of a digital offset control signal that controls an amount of input offset correction provided by the offset correction circuit.

Abstract translation: 本文提供了数字辅助反馈偏移校正的装置和方法。 在某些配置中，放大器包括用于向输入信号提供放大的放大电路和用于补偿放大器的输入偏移电压的斩波电路。 此外，放大器还包括数字辅助反馈偏移校正电路，其包括斩波纹检测电路，反馈路径斩波电路，数字校正控制电路和偏移校正电路。 斩波纹检测电路基于检测放大器的输出纹波产生检测纹波信号。 此外，反馈路径斩波电路使用放大器的斩波时钟信号解调检测到的纹波信号。 数字校正控制电路接收解调的纹波信号，数字校正控制电路用于控制控制由偏移校正电路提供的输入偏移校正量的数字偏移控制信号的值。

公开(公告)号：US11503145B2

公开(公告)日：2022-11-15

申请号：US16305019

申请日：2017-05-25

Applicant: Analog Devices, Inc.

Inventor： J. Brian Harrington ,  David F. Bolognia ,  Alain Valentin Guery ,  Vikram Venkatadri ,  Hari Chauhan ,  Evgueni Ivanov ,  Carlos R. Calvo

IPC: H04M1/21 ,  H04B10/40 ,  H04M1/72403 ,  H04M1/72412

Abstract: According to one example configuration, an apparatus enhances functionality of a mobile communication device. The apparatus includes an encasement in which to retain the mobile communication device and supplemental circuitry. The supplemental circuitry is operable to: i) control an optical transmitter in the supplemental circuitry to irradiate matter under test, ii) monitor attributes of an optical signal reflected off the matter under test and received by the optical receiver; and iii) communicate the attributes of the optical signal from the supplemental circuitry to the mobile communication device over a communication link. The supplemental circuitry optionally includes multiple electrodes to further monitor attributes of the matter under test.

公开(公告)号：US09425780B1

公开(公告)日：2016-08-23

申请号：US14675370

申请日：2015-03-31

Applicant: Analog Devices, Inc.

Inventor： Evgueni Ivanov

IPC: H05K5/00 ,  H03K5/26 ,  G11C27/02

CPC classification number: H03K5/26 ,  G11C27/02 ,  G11C27/024

Abstract: A circuit operating with a switching clock signal and a sampling clock signal can have one or more of its switching and sampling clock signals periodically phase-reversed. The period of phase reversal can be greater than twice the period of the original switching and/or sampling clock signal, and in certain configurations the switching and sampling clock signals can be synchronized. With a selection of phase reversal period (or frequency), aliasing frequency components of the mixed signal from the switching and sampling clock signals can be removed.

Abstract translation: 具有开关时钟信号和采样时钟信号的电路可以使其一个或多个开关和采样时钟信号周期性相位反相。 相位反转的周期可以大于原始开关和/或采样时钟信号周期的两倍，并且在某些配置中，开关和采样时钟信号可以同步。 通过选择相位反转周期（或频率），可以消除来自开关和采样时钟信号的混合信号的混叠频率分量。

公开(公告)号：US09929142B2

公开(公告)日：2018-03-27

申请号：US14638880

申请日：2015-03-04

Applicant: Analog Devices, Inc.

Inventor： Evgueni Ivanov ,  Javier Alejandro Salcedo

IPC: H02H9/04 ,  H01L27/02 ,  H01L29/735 ,  H01L29/06

CPC classification number: H01L27/0262 ,  H01L29/0692 ,  H01L29/735

Abstract: Apparatus and methods for overvoltage switches with active leakage current compensation are provided. In certain configurations, an IC includes an input node and a protection device or overvoltage switch electrically connected to the input node. The protection device includes a first well and a second well. The second well is positioned adjacent to the first well and has a conductivity type opposite that of the first well. Additionally, a first terminal of the protection device is electrically connected to the first well and to the input node of the IC. The protection device further includes a leakage current compensation circuit that is used to control a voltage level of the second well based on a voltage level of the first terminal to inhibit a leakage current of the first terminal of the protection device.

公开(公告)号：US09614481B2

公开(公告)日：2017-04-04

申请号：US14675087

申请日：2015-03-31

Applicant: Analog Devices, Inc.

Inventor： Evgueni Ivanov

IPC: H03F1/26 ,  H03F1/02 ,  H03F3/393

CPC classification number: H03F1/26 ,  H03F1/0205 ,  H03F3/393 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/45753 ,  H03F3/45977 ,  H03F2200/249 ,  H03F2200/375 ,  H03F2200/78 ,  H03F2203/45212 ,  H03F2203/7212

Abstract: Apparatus and methods for digitally-assisted feedback offset correction are provided herein. In certain configurations, an amplifier includes amplification circuitry for providing amplification to an input signal and chopping circuitry for compensating for an input offset voltage of the amplifier. Additionally, the amplifier further includes a digitally-assisted feedback offset correction circuit, which includes a chopping ripple detection circuit, a feedback-path chopping circuit, a digital correction control circuit, and an offset correction circuit. The chopping ripple detection circuit generates a detected ripple signal based on detecting an output ripple of the amplifier. Additionally, the feedback-path chopping circuit demodulates the detected ripple signal using the amplifier's chopping clock signal. The digital correction control circuit receives the demodulated ripple signal, which the digital correction control circuit uses to control a value of a digital offset control signal that controls an amount of input offset correction provided by the offset correction circuit.

公开(公告)号：US20170138789A1

公开(公告)日：2017-05-18

申请号：US15352175

申请日：2016-11-15

Applicant: ANALOG DEVICES, INC.

Inventor： Evgueni Ivanov

IPC: G01J3/02 ,  G02B6/122 ,  G02B6/12 ,  G01J3/45 ,  G01J3/18

CPC classification number: G01J3/0205 ,  G01J3/0216 ,  G01J3/0256 ,  G01J3/0259 ,  G01J3/1895 ,  G01J3/4532 ,  G01J2001/4242 ,  G01J2003/1213 ,  G02B6/124 ,  G02B6/305

Abstract: Embodiments of the present disclosure provide systems and methods for providing integrated waveguide-based spectrometer systems. In one aspect, the system includes an optical spectrometer comprising one or more waveguides configured to support propagation of optical radiation (i.e. light) through the waveguides to a photodetector. The spectrometer further includes an input coupler for each waveguide, the input coupler configured to couple the radiation from free space into the waveguide in absence of fiber-optic coupling of the radiation into the waveguide. Because at least a portion of the light propagated through the waveguides has interacted with a sample to be spectroscopically evaluated, the light detected by the photodetector allows to carry out the spectroscopic evaluation of the sample. At least some components of the spectrometer are provided on a single die using conventional CMOS techniques, yielding a compact and low cost device.

公开(公告)号：US20160261110A1

公开(公告)日：2016-09-08

申请号：US14638880

申请日：2015-03-04

Applicant: Analog Devices, Inc.

Inventor： Evgueni Ivanov ,  Javier Alejandro Salcedo

IPC: H02H9/04 ,  H01L29/73 ,  H01L29/10 ,  H01L29/06 ,  H01L27/02 ,  H01L49/02

CPC classification number: H01L27/0262 ,  H01L29/0692 ,  H01L29/735

Abstract: Apparatus and methods for overvoltage switches with active leakage current compensation are provided. In certain configurations, an IC includes an input node and a protection device or overvoltage switch electrically connected to the input node. The protection device includes a first well and a second well. The second well is positioned adjacent to the first well and has a conductivity type opposite that of the first well. Additionally, a first terminal of the protection device is electrically connected to the first well and to the input node of the IC. The protection device further includes a leakage current compensation circuit that is used to control a voltage level of the second well based on a voltage level of the first terminal to inhibit a leakage current of the first terminal of the protection device.

Abstract translation: 提供了具有有源漏电流补偿的过电压开关的装置和方法。 在某些配置中，IC包括电连接到输入节点的输入节点和保护装置或过电压开关。 保护装置包括第一井和第二井。 第二井位于与第一井相邻并且具有与第一井相反的导电类型。 此外，保护装置的第一端子电连接到第一阱和IC的输入节点。 该保护装置还包括泄漏电流补偿电路，其用于基于第一端子的电压电平来控制第二阱的电压电平，以抑制保护装置的第一端子的漏电流。