Resonance suppression circuit
    1.
    发明申请
    Resonance suppression circuit 有权
    谐振抑制电路

    公开(公告)号:US20050218972A1

    公开(公告)日:2005-10-06

    申请号:US10813169

    申请日:2004-03-31

    IPC分类号: B23K9/00

    摘要: A resonance suppression circuit is provided to suppress resonance on a power grid of a chip or die. The resonance suppression circuit may include a band-pass filter portion, a comparator portion, an amplification portion and a current dissipation portion. The band-pass filter portion may include an inverter coupled between two signal lines of the power grid. The comparator portion may sense voltage fluctuations at approximately the resonance frequency and trigger the current dissipation portion to turn ON and thereby change the frequency spectrum of the load current on the power grid to suppress the power grid resonance.

    摘要翻译: 提供谐振抑制电路以抑制芯片或管芯的电网上的共振。 谐振抑制电路可以包括带通滤波器部分,比较器部分,放大部分和电流消耗部分。 带通滤波器部分可以包括耦合在电网的两个信号线之间的反相器。 比较器部分可以感测大致谐振频率处的电压波动,并且触发电流耗散部分导通,从而改变电网上的负载电流的频谱以抑制电网谐振。

    High-speed data sampler for optical interconnect
    2.
    发明授权
    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:US07386080B2

    公开(公告)日:2008-06-10

    申请号:US10673218

    申请日:2003-09-30

    IPC分类号: H04L7/00

    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。

    Symmetric and non-stacked XOR circuit

    公开(公告)号:US07088138B2

    公开(公告)日:2006-08-08

    申请号:US10929412

    申请日:2004-08-31

    IPC分类号: H03K19/21

    CPC分类号: H03K19/215

    摘要: A CML XOR logic circuit is provided that includes a pair of pull-up transistors, a pair of current source transistors and a logic switch network coupled between the pull-up transistors and the current source transistors. The logic switch network including a plurality of transistors divided into a first branch, a second branch and a third branch. A tail current flows through the first branch, the second branch or the third branch based on at least two input signals to the plurality of transistors.

    Low-swing level shifter
    4.
    发明申请
    Low-swing level shifter 有权
    低摆幅电平转换器

    公开(公告)号:US20060170481A1

    公开(公告)日:2006-08-03

    申请号:US11047442

    申请日:2005-01-31

    IPC分类号: H03B1/00

    CPC分类号: H03K19/018507

    摘要: In general, in one aspect, the disclosure describes an apparatus for shifting a low swing signal. The apparatus includes a first pair of transistors to receive a first input signal and a second input signal and to generate a first output signal that is a shifted version of the first input signal. The apparatus further includes a second pair of transistors to receive the first input signal and the second input signal and to generate a second output signal that is a shifted version of the second input signal.

    摘要翻译: 通常,在一个方面,本公开描述了一种用于移动低挥杆信号的装置。 该装置包括第一对晶体管,用于接收第一输入信号和第二输入信号,并产生作为第一输入信号的偏移版本的第一输出信号。 该装置还包括第二对晶体管,用于接收第一输入信号和第二输入信号,并产生作为第二输入信号的移位版本的第二输出信号。

    Oscillator delay stage with active inductor
    5.
    发明申请
    Oscillator delay stage with active inductor 失效
    具有有源电感的振荡器延迟级

    公开(公告)号:US20060103479A1

    公开(公告)日:2006-05-18

    申请号:US10991976

    申请日:2004-11-18

    IPC分类号: H03K3/03

    摘要: According to some embodiments, a circuit includes a ring oscillator delay stage. The delay stage may include a first transistor, a second transistor, and an active inductor. A gate of the first transistor may receive a first input signal, a gate of the second transistor may receive a second input signal, a source of the second transistor may be coupled to a source of the first transistor, and the active inductor may be coupled to a drain of the first transistor.

    摘要翻译: 根据一些实施例,电路包括环形振荡器延迟级。 延迟级可以包括第一晶体管,第二晶体管和有源电感器。 第一晶体管的栅极可以接收第一输入信号,第二晶体管的栅极可以接收第二输入信号,第二晶体管的源极可以耦合到第一晶体管的源极,并且有源电感器可以耦合 到第一晶体管的漏极。

    Symmetric and non-stacked XOR circuit
    6.
    发明申请
    Symmetric and non-stacked XOR circuit 有权
    对称和非堆叠XOR电路

    公开(公告)号:US20060044010A1

    公开(公告)日:2006-03-02

    申请号:US10929412

    申请日:2004-08-31

    IPC分类号: H03K19/21

    CPC分类号: H03K19/215

    摘要: A CML XOR logic circuit is provided that includes a pair of pull-up transistors, a pair of current source transistors and a logic switch network coupled between the pull-up transistors and the current source transistors. The logic switch network including a plurality of transistors divided into a first branch, a second branch and a third branch. A tail current flows through the first branch, the second branch or the third branch based on at least two input signals to the plurality of transistors.

    摘要翻译: 提供了一种CML异或逻辑电路,其包括一对上拉晶体管,一对电流源晶体管和耦合在上拉晶体管和电流源晶体管之间的逻辑开关网络。 逻辑开关网络包括分成第一分支,第二分支和第三分支的多个晶体管。 基于至少两个到多个晶体管的输入信号,尾流通过第一分支,第二分支或第三分支。

    Laser driver for high speed short distance links
    7.
    发明申请
    Laser driver for high speed short distance links 有权
    用于高速短距离连接的激光驱动器

    公开(公告)号:US20050226279A1

    公开(公告)日:2005-10-13

    申请号:US10816321

    申请日:2004-03-31

    摘要: One embodiment of a laser driver for high speed interconnections includes a buffered level shifter to shift the input voltage level to an appropriate level. In some embodiments the buffered level shifter may be tuned to provide a desired level shift with impedance matched to the driving load. Another embodiment converts a digital signal to a current train of a bias mode to represent logical zero and of a modulation mode to represent logical one, wherein one or both of the bias mode and modulation mode may be adjusted, for example by a programmable control circuit or by an adaptive control circuit. Some embodiments also provide circuitry for reducing overshoot of the output signal.

    摘要翻译: 用于高速互连的激光驱动器的一个实施例包括用于将输入电压电平转换到适当电平的缓冲电平移位器。 在一些实施例中,缓冲电平移位器可以被调谐以提供具有与驱动负载匹配的阻抗的期望电平移位。 另一个实施例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,其中偏置模式和调制模式中的一个或两个可以例如由可编程控制电路 或通过自适应控制电路。 一些实施例还提供用于减少输出信号的过冲的电路。

    Laser driver for high speed short distance links
    9.
    发明授权
    Laser driver for high speed short distance links 有权
    用于高速短距离连接的激光驱动器

    公开(公告)号:US07505497B2

    公开(公告)日:2009-03-17

    申请号:US10816321

    申请日:2004-03-31

    IPC分类号: H01S3/00

    摘要: One embodiment of a laser driver for high speed interconnections includes a buffered level shifter to shift the input voltage level to an appropriate level. In some embodiments the buffered level shifter may be tuned to provide a desired level shift with impedance matched to the driving load. Another embodiment converts a digital signal to a current train of a bias mode to represent logical zero and of a modulation mode to represent logical one, wherein one or both of the bias mode and modulation mode may be adjusted, for example by a programmable control circuit or by an adaptive control circuit. Some embodiments also provide circuitry for reducing overshoot of the output signal.

    摘要翻译: 用于高速互连的激光驱动器的一个实施例包括用于将输入电压电平转换到适当电平的缓冲电平移位器。 在一些实施例中,缓冲电平移位器可以被调谐以提供具有与驱动负载匹配的阻抗的期望电平移位。 另一个实施例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,其中偏置模式和调制模式中的一个或两个可以例如由可编程控制电路 或通过自适应控制电路。 一些实施例还提供用于减少输出信号的过冲的电路。

    Programmable high-resolution timing jitter injectors high-resolution timing jitter injectors
    10.
    发明授权
    Programmable high-resolution timing jitter injectors high-resolution timing jitter injectors 有权
    可编程高分辨率定时抖动注入器高分辨率定时抖动注入器

    公开(公告)号:US07348821B2

    公开(公告)日:2008-03-25

    申请号:US10946709

    申请日:2004-09-22

    IPC分类号: H03H11/26

    摘要: A device includes a first circuit having rows and columns of delay cells to generate delayed signals based on an input signal. The delayed signals are selectable and have a different delay from one another with respect to the input signal. The device is programmable based on a delay code. Different values of the delay code allow the device to select different delayed signals. The device may select one of the delayed signals from the first circuit for use as a timing signal in a second circuit of the device. The device may also use the delayed signals from the first circuit to evaluate a clock and data recovery circuit. In an embodiment, the circuits may be located on a single die.

    摘要翻译: 一种装置包括具有行和列的延迟单元的第一电路,以基于输入信号产生延迟信号。 延迟信号是可选择的并且相对于输入信号具有彼此不同的延迟。 该设备可以基于延迟码进行编程。 延迟码的不同值允许设备选择不同的延迟信号。 设备可以选择来自第一电路的延迟信号之一用作设备的第二电路中的定时信号。 该装置还可以使用来自第一电路的延迟信号来评估时钟和数据恢复电路。 在一个实施例中,电路可以位于单个管芯上。