Band specific interleaving mismatch compensation in RF ADCs

    公开(公告)号:US10250273B2

    公开(公告)日:2019-04-02

    申请号:US15791538

    申请日:2017-10-24

    Abstract: An integrated circuit chip includes an interleaved analog-to-digital converter (ADC) and an interleaving calibration circuit. The interleaved ADC includes a plurality of ADCs that are each configured to sample an analog signal. The interleaved ADC is configured to convert the analog signal into an interleaved analog-to-digital signal (IADC signal) that includes a plurality of spurious signals formed from mismatches between the plurality of ADCs. The interleaving calibration circuit is configured to receive the IADC signal from the interleaved ADC, generate a mismatch profile estimate corresponding to the plurality of spurious signals to generate one or more mismatch profile estimates, determine whether a first mismatch profile estimate is in a frequency band of interest, and, in response to a determination that the first mismatch profile estimate is in the frequency band of interest, generate a set of model parameters based on the first mismatch profile estimate.

    High speed isolated and optical USB

    公开(公告)号:US10014957B2

    公开(公告)日:2018-07-03

    申请号:US15067410

    申请日:2016-03-11

    Abstract: A system and method are disclosed for providing electrically isolated communications between two USB2 devices. Two isolating eUSB2 repeaters are utilized to implement a digital isolation barrier between the two USB2 devices. The isolating eUSB2 repeaters are configured to broker isolated communications between the two USB2 devices using a modified eUSB2 protocol that allows the two isolating eUSB2 repeaters to interoperate across the isolating barrier. The modified eUSB2 protocol allows the two isolating eUSB2 repeaters to broker isolating communications on behalf of the USB2 devices without the use of an accurate clock signal. The modified eUSB2 protocol utilized by the isolating eUSB2 repeaters is configured in particular to support certain end-of-packet translations between USB2 data and the modified eUSB2 protocol, management of certain USB2 bus state transitions and assignment of roles to the two isolating eUSB2 repeaters.

    FREE-FLY CLASS D POWER AMPLIFIER
    4.
    发明申请
    FREE-FLY CLASS D POWER AMPLIFIER 有权
    自由飞行类D功率放大器

    公开(公告)号:US20130234795A1

    公开(公告)日:2013-09-12

    申请号:US13416841

    申请日:2012-03-09

    CPC classification number: H03F3/2173 H03F1/56 H03F2200/387

    Abstract: A method is provided. A first enable signal is asserted so as to enable a first driver, where the first driver has a first output and a first parasitic capacitance. A second enable signal is asserted so as to enable a second driver, where the second driver has a second output and a second parasitic capacitance. The first and second outputs are coupled together by a switching network when the second driver is enabled. Pulses from complementary first and second radio frequency (RF) signals are applied to the first driver, where there is a first set of free-fly intervals between consecutive pulses from the first and second RF signals, and pulses from complementary third and fourth RF signals are applied to the second driver, wherein there is a second set of free-fly interval between consecutive pulses from the third and fourth RF signals.

    Abstract translation: 提供了一种方法。 第一使能信号被确定为使第一驱动器能够使第一驱动器具有第一输出和第一寄生电容。 第二使能信号被确定为使第二驱动器能够启动,其中第二驱动器具有第二输出和第二寄生电容。 当第二驱动器被使能时,第一和第二输出由交换网络耦合在一起。 来自互补第一和第二射频(RF)信号的脉冲被施加到第一驱动器,其中在来自第一和第二RF信号的连续脉冲之间存在第一组自由飞行间隔,以及来自互补的第三和第四RF信号的脉冲 被施加到第二驱动器,其中在来自第三和第四RF信号的连续脉冲之间存在第二组自由间隔。

    Modular socket
    5.
    发明授权
    Modular socket 有权
    模块化插座

    公开(公告)号:US06881100B2

    公开(公告)日:2005-04-19

    申请号:US10270763

    申请日:2002-10-15

    CPC classification number: H01R13/514 H01R9/2408 H01R12/716

    Abstract: A socket for receiving a line of contact pins is formed of modules connected together. The modules have three, four or five pin receiving openings and are joined to one another by dovetail connectors to form an elongated body having the desired number of pin receiving openings. Contacts are provided in the pin receiving openings to electrically connect with the pins. The modules have a ledge on which rests a work surface.

    Abstract translation: 用于接收接触针线的插座由连接在一起的模块形成。 模块具有三个,四个或五个销接收开口,并且通过燕尾连接器彼此连接以形成具有所需数量的销接收开口的细长主体。 触头设置在销接收开口中以与销电连接。 模块有一个突出部,其上安置有工作台面。

    Long preamble and duty cycle based coexistence mechanism for power line communication (PLC) networks

    公开(公告)号:US10396852B2

    公开(公告)日:2019-08-27

    申请号:US15946041

    申请日:2018-04-05

    Abstract: Embodiments of methods and systems for supporting coexistence of multiple technologies in a Power Line Communication (PLC) network are disclosed. A long coexistence preamble sequence may be transmitted by a device that has been forced to back off the PLC channel multiple times. The long coexistence sequence provides a way for the device to request channel access from devices on the channel using other technology. The device may transmit a data packet after transmitting the long coexistence preamble sequence. A network duty cycle time may also be defined as a maximum allowed duration for nodes of the same network to access the channel. When the network duty cycle time occurs, all nodes will back off the channel for a duty cycle extended inter frame space before transmitting again. The long coexistence preamble sequence and the network duty cycle time may be used together.

    Programmable impedance network in an amplifier

    公开(公告)号:US10033341B2

    公开(公告)日:2018-07-24

    申请号:US15464091

    申请日:2017-03-20

    Abstract: The disclosure provides an amplifier. The amplifier includes a first transistor that receives a first input. A second transistor receives a second input. A plurality of impedance networks is coupled between the first transistor and the second transistor. At least one impedance network of the plurality of impedance networks includes a first impedance path and a second impedance path. The first impedance path is activated during single ended operation, and the second impedance path is activated during differential operation.

    Nonvolatile logic array with built-in test drivers
    9.
    发明授权
    Nonvolatile logic array with built-in test drivers 有权
    具有内置测试驱动器的非易失逻辑阵列

    公开(公告)号:US08792288B1

    公开(公告)日:2014-07-29

    申请号:US13753800

    申请日:2013-01-30

    CPC classification number: G11C29/36 G11C7/12 G11C7/20 G11C11/419 G11C2029/1204

    Abstract: A system on chip (SoC) provides a nonvolatile memory array that is configured as n rows by m columns of bit cells. Each of the bit cells is configured to store a bit of data. There are m bit lines each coupled to a corresponding one of the m columns of bit cells. There are m write drivers each coupled to a corresponding one of the m bit lines, wherein the m drivers each comprise a write one circuit and a write zero circuit. The m drivers are operable to write all ones into a row of bit cells in response to a first control signal coupled to the write one circuits and to write all zeros into a row of bit cells in response to a second control signal coupled to the write zero circuits.

    Abstract translation: 片上系统(SoC)提供非易失性存储器阵列,其配置为n行x位的位单元。 每个位单元被配置为存储一位数据。 存在m个位线,每个位线耦合到位单元的m列的相应一个。 存在m个写入驱动器,每个m个驱动器都耦合到m个位线中的对应的一个,其中m个驱动器各自包括写入一个电路和写入零电路。 响应于耦合到写入一个电路的第一控制信号并且响应于耦合到写入的第二控制信号将全零写入位单元行中,m个驱动器可操作以将所有的一个写入一行位单元 零电路。

    FREQUENCY SYNTHESIZER PRESCALER SCRAMBLING
    10.
    发明申请
    FREQUENCY SYNTHESIZER PRESCALER SCRAMBLING 有权
    频率合成器预分频器

    公开(公告)号:US20120235714A1

    公开(公告)日:2012-09-20

    申请号:US13051588

    申请日:2011-03-18

    CPC classification number: H03K21/00 H03K21/023 H03K23/68

    Abstract: Various apparatuses, methods and systems for frequency dividing a clock signal are disclosed herein. For example, some embodiments of the present invention provide an apparatus including a plurality of multiplexers connected in series with the clock signal, each having a plurality of inputs of different phase delays. The apparatus also includes a delta sigma modulator connected to control inputs on the plurality of multiplexers. The delta sigma modulator is adapted to repeatedly select different ones of the pluralities of inputs of different phase delays in the plurality of multiplexers to change a divide ratio between the clock signal and an output of the plurality of multiplexers. The apparatus also includes a multiplexer usage accumulator connected to the delta sigma modulator to track usage of the plurality of multiplexers. The apparatus also includes a scrambler circuit connected between the delta sigma modulator and the control inputs on the plurality of multiplexers, adapted to control settings in the plurality of multiplexers based at least in part on the multiplexer usage accumulator.

    Abstract translation: 这里公开了用于对时钟信号进行分频的各种装置,方法和系统。 例如,本发明的一些实施例提供一种装置,包括与时钟信号串联连接的多个多路复用器,每个具有不同相位延迟的多个输入。 该装置还包括连接到多个多路复用器上的控制输入端的Δ-Σ调制器。 ΔΣ调制器适于重复地选择多个多路复用器中的不同相位延迟的多个输入的不同的输入,以改变时钟信号和多个多路复用器的输出之间的分频比。 该装置还包括连接到Δ-Σ调制器以跟踪多个多路复用器的使用的多路复用器使用累加器。 该装置还包括连接在Δ-Σ调制器与多个多路复用器之间的控制输入端的扰频电路,适于至少部分地基于多路复用器使用累加器来控制多个多路复用器中的设置。

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