公开(公告)号：US20100117703A1

公开(公告)日：2010-05-13

申请号：US12269984

申请日：2008-11-13

申请人： Zhipeng Zhu ,  Axel Thomsen

发明人： Zhipeng Zhu ,  Axel Thomsen

IPC分类号： H03K3/00 ,  G05F1/10

CPC分类号： H03K5/082 ,  H03K19/00361

摘要： Techniques reduce the effects of power supply noise on a signal provided by a single-ended complementary metal-oxide semiconductor (i.e., CMOS) input buffer circuit capable of receiving an input signal having one of a variety of acceptable formats, while generating the signal to have substantially the same duty cycle as the input signal. The techniques include one or more of AC coupling, hysteresis, and voltage biasing applied to the input buffer circuit.

摘要翻译： 技术降低电源噪声对单端互补金属氧化物半导体（即CMOS）输入缓冲电路提供的信号的影响，该电路能够接收具有多种可接受格式之一的输入信号，同时产生信号 具有与输入信号基本相同的占空比。 这些技术包括施加到输入缓冲器电路的AC耦合，迟滞和电压偏置中的一个或多个。

公开(公告)号：US07498656B2

公开(公告)日：2009-03-03

申请号：US10813886

申请日：2004-03-31

申请人： Ligang Zhang ,  David Pietruszynski ,  Axel Thomsen ,  Kevin G. Smith

发明人： Ligang Zhang ,  David Pietruszynski ,  Axel Thomsen ,  Kevin G. Smith

IPC分类号： H01F27/28

CPC分类号： H01L23/552 ,  H01F2017/008 ,  H01L23/645 ,  H01L2224/16225 ,  H01L2924/00014 ,  H01L2924/01079 ,  H01L2924/15311 ,  H01L2924/3025 ,  H01L2224/0401

摘要： An improved electromagnetic shielding structure has been discovered. In one embodiment of the invention, an apparatus includes an inductor and an electrically conductive enclosure that electromagnetically shields the inductor. The electrically conductive enclosure has an aperture at least as large as the inductor. The aperture is substantially centered around a projected surface of the inductor. The apparatus may include one or more electrically conductive links extending across the aperture and electrically coupled to the electrically conductive enclosure. The electrically conductive links reduce an effect of electromagnetic signals external to the electrically conductive enclosure on the inductor.

摘要翻译： 已经发现了改进的电磁屏蔽结构。 在本发明的一个实施例中，一种装置包括电感器和电磁屏蔽电感器的导电外壳。 导电外壳具有至少与电感器一样大的孔径。 孔径基本上以电感器的投影表面为中心。 该装置可以包括一个或多个延伸穿过孔并且电耦合到导电外壳的导电链路。 导电链路降低电感器上导电外壳外部的电磁信号的影响。

公开(公告)号：US07352207B2

公开(公告)日：2008-04-01

申请号：US11239944

申请日：2005-09-30

申请人： Akhil K. Garlapati ,  Axel Thomsen

发明人： Akhil K. Garlapati ,  Axel Thomsen

IPC分类号： H03K19/094 ,  H03K19/0175 ,  H01L5/00

CPC分类号： H03F3/45188 ,  H03F3/3061 ,  H03F3/45654 ,  H03F3/45708

摘要： A complementary metal-oxide semiconductor output driver provides a differential output signal having a particular differential voltage swing and a particular common mode voltage to a differential output node for various types of load circuits coupled to the differential output node. The load circuit may have any impedance within a particular impedance range. A current source provides a current with a variable current component that adjusts the differential voltage swing of the differential output signal. A common mode feedback circuit adjusts the common mode voltage of the differential output signal by sourcing current to the differential output node or sinking current from the differential output node. At least a portion of a current flowing into a load circuit coupled to the differential node is provided by the current source, thereby reusing current from the current source.

摘要翻译： 互补金属氧化物半导体输出驱动器为耦合到差分输出节点的各种类型的负载电路提供具有特定差分电压摆幅和特定共模电压的差分输出信号到差分输出节点。 负载电路可以在特定阻抗范围内具有任何阻抗。 电流源为电流提供调节差分输出信号的差分电压摆幅的可变电流分量。 共模反馈电路通过向差分输出节点提供电流或从差分输出节点吸收电流来调整差分输出信号的共模电压。 流过耦合到差分节点的负载电路的电流的至少一部分由电流源提供，从而重新使用来自电流源的电流。

公开(公告)号：US07162506B1

公开(公告)日：2007-01-09

申请号：US11057450

申请日：2005-02-14

申请人： Axel Thomsen ,  Jerome E Johnston ,  Edwin Angel ,  Aryesh Amar

发明人： Axel Thomsen ,  Jerome E Johnston ,  Edwin Angel ,  Aryesh Amar

IPC分类号： G06F17/10

CPC分类号： H03H17/0294 ,  H03M3/392 ,  H03M3/462

摘要： In a signal processing integrated circuit having an analog to digital converter and a digital filter having a plurality of taps separated in time, when starting a conversion after a reset or a change of input channel, the filter will have an incomplete set of input data as the delayed inputs to an output calculation are all zero from the reset operation. After reset, during the time that data are filling up the filter pipeline, the calculation of an output value will give a result that holds information about the input, but does not present the data with the same scaling and frequency content as the fully settled filter. The integrated circuit selectively provides two modes, on that provides only fully settled data from the filter or and another that provides all data from the filter, including unsettled data. Knowledge about the filter coefficients can be utilized by a user or user process to extract information about the input from the unsettled data.

摘要翻译： 在具有模拟数字转换器的信号处理集成电路和具有时间分离的多个抽头的数字滤波器的情况下，当在复位或输入通道改变之后开始转换时，滤波器将具有不完整的输入数据集 输出计算的延迟输入从复位操作全部为零。 在复位之后，在数据填满过滤器管线的时间期间，输出值的计算将给出保存有关输入信息的结果，但不显示具有与完全设置的过滤器相同的缩放和频率内容的数据 。 集成电路有选择地提供两种模式，其中仅提供来自滤波器的完全确定的数据，或者提供来自滤波器的所有数据的另一种模式，包括不稳定的数据。 关于滤波器系数的知识可以由用户或用户进程利用来从未解决的数据中提取关于输入的信息。

公开(公告)号：US07141883B2

公开(公告)日：2006-11-28

申请号：US10463961

申请日：2003-06-18

申请人： Derrick C. Wei ,  Ying Shi ,  Kevin G. Smith ,  Steven P. Proffitt ,  Axel Thomsen ,  David M. Pietruszynski ,  Ligang Zhang

发明人： Derrick C. Wei ,  Ying Shi ,  Kevin G. Smith ,  Steven P. Proffitt ,  Axel Thomsen ,  David M. Pietruszynski ,  Ligang Zhang

IPC分类号： H01L23/48 ,  H01L23/552

CPC分类号： H01L23/552 ,  H01F2017/008 ,  H01L23/645 ,  H01L2224/16225 ,  H01L2924/00014 ,  H01L2924/01079 ,  H01L2924/15311 ,  H01L2924/3025 ,  H01L2224/0401

摘要： An electromagnetically-shielded high-Q inductor may be fabricated within a multi-layer package substrate (MLS). The inductor is preferably constructed as a loop structure on a layer of the MLS, and a shielding structure is formed around the inductor to substantially enclose the inductor in a Faraday cage-like enclosure. The shielding structure includes a top plate formed above the inductor on another layer of the MLS, and a bottom plate formed on yet another layer of the MLS or on a layer of an integrated circuit die which is below and attached to the MLS, preferably using solder bumps. Shielding structure sidewalls may be formed by a ring of stacked vias or via channels. The inductor is preferably connected to stacked vias which provide a connection to the underlying integrated circuit die by way of additional solder bumps and cut-outs through the bottom plate of the shielding structure.

摘要翻译： 可以在多层封装衬底（MLS）内制造电磁屏蔽的高Q电感器。 电感器优选地构造为MLS层上的环路结构，并且围绕电感器形成屏蔽结构，以将电感器基本上包围在法拉第笼状壳体中。 屏蔽结构包括在MLS的另一层上形成在电感器上方的顶板，以及形成在MLS的另一层上的底板或集成电路管芯的下面并连接到MLS上的层，优选地使用 焊锡凸块 屏蔽结构侧壁可以由堆叠的通孔环或通孔形成。 电感器优选地连接到堆叠的通孔，其通过附加的焊料凸块和穿过屏蔽结构的底板的切口提供到下面的集成电路管芯的连接。

公开(公告)号：US20060119437A1

公开(公告)日：2006-06-08

申请号：US11270957

申请日：2005-11-10

申请人： Axel Thomsen ,  Yunteng Huang ,  Jerrell Hein ,  Derrick Wei

发明人： Axel Thomsen ,  Yunteng Huang ,  Jerrell Hein ,  Derrick Wei

IPC分类号： H03L7/00

CPC分类号： H03L7/0898 ,  H03L1/022 ,  H03L1/026 ,  H03L7/095 ,  H03L7/0992 ,  H03L7/197 ,  H03L7/1976 ,  H03L7/23 ,  H03L7/235 ,  H03L2207/50 ,  H04J3/0688

摘要： A voltage controlled clock synthesizer includes a phase-locked loop (PLL) circuit that receives a timing reference signal, a controllable oscillator circuit, such as a VCO, providing an oscillator output signal, and a feedback divider circuit coupled to the oscillator output signal. The frequency of the oscillator output signal is determined in part according to a stored value used to generate a first digital control signal that determines a divide ratio of the feedback divider circuit. A control voltage present on a voltage control input adjusts the frequency of the oscillator output signal around a frequency determined by the stored value. The control voltage is converted to second digital signal and is utilized in determining the first digital control signal in combination with the stored value.

摘要翻译： 电压控制时钟合成器包括接收定时参考信号的锁相环（PLL）电路，提供振荡器输出信号的可控振荡器电路，例如VCO，以及耦合到振荡器输出信号的反馈分频器电路。 振荡器输出信号的频率部分地根据用于产生确定反馈分频器电路的分频比的第一数字控制信号的存储值来确定。 存在于电压控制输入端的控制电压根据由存储的值确定的频率调整振荡器输出信号的频率。 控制电压被转换为第二数字信号，并用于与所存储的值组合确定第一数字控制信号。

公开(公告)号：US07047148B1

公开(公告)日：2006-05-16

申请号：US09695703

申请日：2000-10-25

申请人： Axel Thomsen

发明人： Axel Thomsen

IPC分类号： H03F1/26 ,  G01R31/00

CPC分类号： G01R29/26 ,  G01R31/316

摘要： The time required to measure 1/f noise for a device, such as an integrated circuit, can be shortened by applying offset to a chopper stabilized circuit and then using offset removal as a surrogate measure for 1/f noise performance.

摘要翻译： 通过对斩波稳定电路施加偏移，然后使用偏移消除作为1 / f噪声性能的替代测量，可以缩短测量设备（例如集成电路）1 / f噪声所需的时间。

公开(公告)号：US20060033546A1

公开(公告)日：2006-02-16

申请号：US11239943

申请日：2005-09-30

申请人： Yunteng Huang ,  Ligang Zhang ,  Axel Thomsen

发明人： Yunteng Huang ,  Ligang Zhang ,  Axel Thomsen

IPC分类号： G06F1/04

CPC分类号： G06F7/68 ,  H03L7/183 ,  H03L7/23

摘要： A PLL function may be implemented as a dual-loop structure having a first PLL circuit which generates an intermediate signal from the reference signal, and a second PLL circuit which generates an output signal from the intermediate signal. The intermediate signal frequency is preferably chosen at a value in which potential interference signals do not have much energy. The first loop preferably has low bandwidth to provide good input jitter attenuation, while second loop preferably has higher bandwidth to reduce phase noise of the output signal. The circuit preferably provides for a choice of several different intermediate frequencies to allow use where different intermediate frequencies may exist in each system. Moreover, in a system having two such dual-loop PLL circuits, each can be configured with a different intermediate frequency, so that interference from one to the other is reduced.

摘要翻译： PLL功能可以实现为具有从参考信号产生中间信号的第一PLL电路的双回路结构，以及从中间信号产生输出信号的第二PLL电路。 中间信号频率优选地被选择为其中潜在的干扰信号没有太多能量的值。 第一环路优选具有低带宽以提供良好的输入抖动衰减，而第二环路优选地具有较高带宽以减少输出信号的相位噪声。 该电路优选地提供几种不同中频的选择，以允许在每个系统中可能存在不同中频的应用。 此外，在具有两个这样的双回路PLL电路的系统中，每个都可以配置有不同的中频，从而减少了从一个到另一个的干扰。

公开(公告)号：US20060012439A1

公开(公告)日：2006-01-19

申请号：US11168012

申请日：2005-06-28

申请人： Axel Thomsen ,  Ronald Spencer

发明人： Axel Thomsen ,  Ronald Spencer

IPC分类号： H03L7/00

CPC分类号： H03L7/0895 ,  H03D13/004 ,  H03L7/1976

摘要： A phase detector detects a phase difference between a first and second signal received by a phase detector. A charge is supplied by a charge pump circuit that corresponds to the phase difference using a phase difference to charge conversion that is substantially linear and nonzero in a phase error region that includes a phase error transition region around a phase error of zero having both negative and positive phase error values. Dual determinations, q1 and q2, offset from each other are made, of an appropriate charge for a given phase error between the first and second signals. The charge pump supplies as the total charge pump output a charge value representing a combination of q1 and q2, thereby providing a phase error to charge conversion that is substantially linear in the phase error transition region around zero. A first and second output of the phase detector circuit respectively supplying UP and DOWN signals to the charge pump circuit are delayed and supplied as additional outputs of the phase detector circuit and used in generating the dual charge determinations q1 and q2.

摘要翻译： 相位检测器检测由相位检测器接收的第一和第二信号之间的相位差。 由相位差对应的电荷泵电路提供电荷，所述电荷泵电路使用在相位误差区域中基本为线性且非零的相位差的电荷转换，所述相位误差区域包括零​​相位误差为零的相位误差跃迁区域， 正相误差值。 对于第一和第二信号之间给定的相位误差，进行相互偏移的双重确定q1和q2。 电荷泵作为总电荷泵输出表示q1和q2的组合的电荷值，从而在零相位误差过渡区域内提供基本为线性的电荷转换的相位误差。 分别向电荷泵电路提供UP和DOWN信号的相位检测器电路的第一和第二输出被延迟并作为相位检测器电路的附加输出提供，并用于产生双电荷确定q1和q2。

公开(公告)号：US20050212570A1

公开(公告)日：2005-09-29

申请号：US10807852

申请日：2004-03-24

申请人： Lizhong Sun ,  Bruce Signore ,  Axel Thomsen ,  Douglas Pastorello

发明人： Lizhong Sun ,  Bruce Signore ,  Axel Thomsen ,  Douglas Pastorello

IPC分类号： H03K21/08 ,  H03K21/40 ,  H03K23/66

CPC分类号： H03K21/40 ,  H03K21/08 ,  H03K23/667

摘要： A divider is disclosed herein. The divider includes a sequence of divide stages programmably coupled to provide a variety of divide ratios. The divider also includes one or more multiplexers to feedback the output of a divide stage to the input of a divide stage earlier in the sequence of divide stages. The divider may also include duty cycle correction circuitry and self correction logic to correct abnormal logic states. The divide stages can operate in synchronism with each other. Multiplexer functionality, self correction circuitry functionality, and divide stage functionality may be implemented in a combination latch circuit.

摘要翻译： 本文公开了一种分频器。 分频器包括可编程地耦合以提供各种分频比的分频级序列。 分频器还包括一个或多个多路复用器，用于将分频级的输出反馈到除法级序列之前的分频级的输入端。 分频器还可以包括占空比校正电路和用于校正异常逻辑状态的自校正逻辑。 分级阶段可以相互同步运行。 多路复用器功能，自校正电路功能和分频功能可以在组合锁存电路中实现。