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161 条记录 (耗时 0.03 秒)

    High-speed data sampler for optical interconnect
    111.
    发明申请
    High-speed data sampler for optical interconnect 有权
    用于光互连的高速数据采样器

    公开(公告)号：US20050069070A1

    公开(公告)日：2005-03-31

    申请号：US10673218

    申请日：2003-09-30

    申请人： Fabrice Paillet ,  Tanay Karnik ,  Jianping Xu

    发明人： Fabrice Paillet ,  Tanay Karnik ,  Jianping Xu

    IPC分类号： H03L7/081 ,  H04L7/00

    CPC分类号： H04L7/0079 ,  H03L7/0812 ,  H04L7/0008

    摘要： A system and method for sampling a data stream generates a number of clock signals having equally spaced phases and then samples a data stream using the clock signals. The clock phases are preferably based on a predetermined fraction of a data rate frequency of the data stream, and sampling is performed based on predetermined combinations of the clock signals. While the system and method is suitable for sampling data transmitted for a wide variety of data rates, the system and method is especially well-suited to sampling at data transmitted at high rates, for example, equal to or greater than 20 Gb/s.

    摘要翻译： 用于对数据流进行采样的系统和方法产生具有相等间隔相位的多个时钟信号，然后使用时钟信号对数据流进行采样。 时钟相位优选地基于数据流的数据速率频率的预定分数，并且基于时钟信号的预定组合来执行采样。 虽然系统和方法适合于为各种数据速率传输的数据采样，但是该系统和方法特别适合于以高速率传输的数据进行采样，例如等于或大于20Gb / s。

    Differential, double feedback CMOS transimpedance amplifier with noise tolerance
    112.
    发明授权
    Differential, double feedback CMOS transimpedance amplifier with noise tolerance 失效
    差分双反馈CMOS跨阻抗放大器，具有噪声容限

    公开(公告)号：US06737924B1

    公开(公告)日：2004-05-18

    申请号：US10317709

    申请日：2002-12-11

    申请人： Fabrice Paillet ,  Tanay Karnik

    发明人： Fabrice Paillet ,  Tanay Karnik

    IPC分类号： H03F308

    CPC分类号： H03F1/083 ,  H03F1/342 ,  H03F3/082 ,  H03F3/265

    摘要： A transimpedance amplifier having a first input port to connect to a signal source having an output impedance, and a second input port loaded by an impedance matched to the output impedance of the signal source, the amplifier comprising three stage pairs. The first stage pair comprises two inverting amplifiers, each employing negative feedback. The second stage pair comprises two inverting amplifiers with cross-coupled negative feedback. The third stage pair is similar in structure to the first stage pair. The inverter amplifiers in the third stage pair provide the differential voltage.

    摘要翻译： 一种跨阻放大器，具有连接到具有输出阻抗的信号源的第一输入端口和由与信号源的输出阻抗匹配的阻抗加载的第二输入端口，该放大器包括三个级对。 第一级对包括两个反相放大器，每个反相放大器采用负反馈。 第二级对包括具有交叉耦合负反馈的两个反相放大器。 第三级对在结构上与第一级对相似。 第三级对中的反相放大器提供差分电压。

    Method and apparatus for optical signaling
    113.
    发明授权
    Method and apparatus for optical signaling 有权
    光信令的方法和装置

    公开(公告)号：US08406634B2

    公开(公告)日：2013-03-26

    申请号：US13183178

    申请日：2011-07-14

    申请人： Jianping Xu ,  Fabrice Paillet ,  Tanay Karnik ,  Donald S. Gardner

    发明人： Jianping Xu ,  Fabrice Paillet ,  Tanay Karnik ,  Donald S. Gardner

    IPC分类号： H04B10/18

    CPC分类号： H03F1/083 ,  H03F1/342 ,  H03F3/082 ,  H03F3/265

    摘要： A method and apparatus for optical signaling. In one embodiment, a laser driver converts a digital voltage sequence to a current signal having a bias mode adjustable by a bias control and a modulation mode adjustable by a modulation control. A laser generates an optical signal responsive to the current signal of the laser driver. In one embodiment, a photo-detector receives an optical signal and generates a single ended current signal. A transimpedance amplifier circuit converts the single ended current signal to a differential voltage signal. A clock recovery circuit generates an aligned clock signal and a sampler circuit uses the aligned clock signal to retrieve a digital voltage sequence.

    摘要翻译： 一种用于光信令的方法和装置。 在一个实施例中，激光驱动器将数字电压序列转换为具有可通过偏置控制调节的偏置模式的电流信号和通过调制控制可调节的调制模式。 激光器响应于激光驱动器的当前信号产生光信号。 在一个实施例中，光电检测器接收光信号并产生单端电流信号。 跨阻放大器电路将单端电流信号转换为差分电压信号。 时钟恢复电路产生对准的时钟信号，并且采样器电路使用对准的时钟信号来取回数字电压序列。

    Delay interpolation in a ring oscillator delay stage
    114.
    发明授权
    Delay interpolation in a ring oscillator delay stage 有权

    公开(公告)号：US07088191B2

    公开(公告)日：2006-08-08

    申请号：US10953023

    申请日：2004-09-29

    申请人： Fabrice Paillet ,  David Rennie ,  Tanay Karnik ,  Jianping Xu

    发明人： Fabrice Paillet ,  David Rennie ,  Tanay Karnik ,  Jianping Xu

    IPC分类号： H03K3/03 ,  H03L7/00

    CPC分类号： H03K3/0322

    摘要： According to some embodiments, a circuit includes a delay stage of a ring oscillator. The delay stage may include a first differential pair, a second differential pair, and a third differential pair. The first differential pair may be coupled to a first current-steering circuit, receive a differential input signal, and output a first differential signal. The second differential pair may receive the differential input signal and output a second differential signal, and the third differential pair may be coupled to a second current-steering circuit, receive the second differential signal from the second differential pair, and output the first differential signal. An amount of delay between the differential input signal and the first differential signal is based on relative amounts of current steered by the first current-steering circuit and the second current-steering circuit.

    Optical offset signal cancellation for optical receiver
    115.
    发明申请
    Optical offset signal cancellation for optical receiver 有权
    光接收机的光偏移信号消除

    公开(公告)号：US20050232637A1

    公开(公告)日：2005-10-20

    申请号：US11026632

    申请日：2004-12-30

    申请人： Fabrice Paillet ,  Tanay Karnik ,  Jianping Xu ,  Donald Gardner

    发明人： Fabrice Paillet ,  Tanay Karnik ,  Jianping Xu ,  Donald Gardner

    IPC分类号： H04B10/00 ,  H04B10/158

    CPC分类号： H04B10/66

    摘要： A laser driver for high speed interconnections may convert a digital signal to a current train of a bias mode to represent logical zero and of a modulation mode to represent logical one. An optical signal thus produced may include an optical offset. An optical receiver may include a photo-detector to receive the optical signal and generate a current signal, which includes a corresponding current offset. A first amplifier stage converts the current signal to a voltage signal and a second amplifier stage generates a digital output from the voltage signal. One or more low-pass filters may be used to filter the digital output and generate a filtered offset signal for a differential amplifier to generate an offset cancellation signal. The offset cancellation signal may be provided to offset cancellation circuitry to remove the current offset from the current signal generated by the photo-detector.

    摘要翻译： 用于高速互连的激光驱动器可以将数字信号转换为偏置模式的当前列，以表示逻辑零和调制模式以表示逻辑1。 如此产生的光信号可以包括光偏移。 光接收器可以包括光检测器，用于接收光信号并产生电流信号，其包括对应的电流偏移。 第一放大器级将电流信号转换成电压信号，第二放大器级从电压信号产生数字输出。 可以使用一个或多个低通滤波器来对数字输出进行滤波，并产生用于差分放大器的滤波偏移信号以产生偏移消除信号。 可以将偏移消除信号提供给偏移消除电路，以从光电检测器产生的电流信号中去除电流偏移。

    Voltage dependent capacitor configuration for higher soft error rate tolerance
    118.
    发明授权
    Voltage dependent capacitor configuration for higher soft error rate tolerance 有权
    电压相关电容器配置，用于更高的软错误率容差

    公开(公告)号：US06552887B1

    公开(公告)日：2003-04-22

    申请号：US09608457

    申请日：2000-06-29

    申请人： Tanay Karnik ,  Rajendran Nair ,  Vivek K. De

    发明人： Tanay Karnik ,  Rajendran Nair ,  Vivek K. De

    IPC分类号： G11C1140

    CPC分类号： G11C5/005 ,  G11C11/401 ,  H01L27/0808

    摘要： A voltage dependent capacitor to provide soft error rate tolerance in an integrated circuit is disclosed. In one embodiment, a parallel n-p voltage dependent capacitor is used to protect a node from noise. In another embodiment, an nFET-in-nWell voltage dependent capacitor is used to provide a soft error rate tolerant capacitor with reduced area.

    摘要翻译： 公开了一种用于在集成电路中提供软错误率容限的电压相关电容器。 在一个实施例中，使用并联n-p电压依赖电容器来保护节点免受噪声。 在另一个实施例中，使用nFET-nWell电压相关电容器来提供具有减小的面积的软误差容限电容器。

    Decoupling capacitors for thin gate oxides
    119.
    发明授权
    Decoupling capacitors for thin gate oxides 有权
    薄栅氧化物去耦电容器

    公开(公告)号：US06828638B2

    公开(公告)日：2004-12-07

    申请号：US09469406

    申请日：1999-12-22

    申请人： Ali Keshavarzi ,  Vivek K. De ,  Tanay Karnik ,  Rajendran Nair

    发明人： Ali Keshavarzi ,  Vivek K. De ,  Tanay Karnik ,  Rajendran Nair

    IPC分类号： H01L2976

    CPC分类号： H01L27/0805 ,  H01L29/94 ,  H01L2924/0002 ,  H01L2924/00

    摘要： In some embodiments, the invention involves a die having a first conductor carrying a power supply voltage and a second conductor carrying a ground voltage. A semiconductor capacitor operating in depletion mode is coupled between the first and second conductors to provide decoupling capacitance between the first and second conductors, the semiconductor capacitor having a gate voltage. Various configurations may be used including: n+ gate poly and n+ source/drain regions in an n-body; p+ gate poly and n+ source/drain regions in an n-body; p+ gate poly and p+ source/drain regions in an n-body; p+ gate poly and p+ source/drain regions in a p-body; n+ gate poly and p+ source/drain regions in a p-body; n+ gate poly and n+ source/drain regions in a p-body. The power supply voltage may have a larger absolute value than does a flatband voltage.

    摘要翻译： 在一些实施例中，本发明涉及具有承载电源电压的第一导体和承载接地电压的第二导体的管芯。 以耗尽模式工作的半导体电容器耦合在第一和第二导体之间，以在第一和第二导体之间提供去耦电容，半导体电容器具有栅极电压。 可以使用各种构造，包括：n体中的n +栅极多晶硅和n +源极/漏极区域; p +栅极多晶硅和n +源极/漏极区域; p +栅极poly和p +源极/漏极区域在n体中; p体中的p +栅极多晶硅和p +源极/漏极区域; p体中的n +栅极多晶硅和p +源极/漏极区域; p体中的n +栅极多晶硅和n +源极/漏极区域。 电源电压可能比平带电压具有更大的绝对值。