CMOS current controlled delay element using cascoded complementary
differential amplifiers with replicated bias clamp
    41.
    发明授权
    CMOS current controlled delay element using cascoded complementary differential amplifiers with replicated bias clamp 失效
    CMOS电流控制延迟元件使用具有复制偏置钳位的级联互补差分放大器

    公开(公告)号:US5783953A

    公开(公告)日:1998-07-21

    申请号:US671301

    申请日:1996-07-01

    IPC分类号: H03K5/13 H03L7/099 H03B5/02

    CPC分类号: H03L7/0995 H03K5/133

    摘要: A cascoded cmos differential delay element is described. The delay element provides a controlled delay useful in forming voltage controlled oscillators or other circuits. The delay element provides high gain enabling it to be useful in multistage delay element circuits. The circuit described includes cascoded complementary differential amplifiers and replicated bias clamps.

    摘要翻译: 描述了级联的cmos差分延迟元件。 延迟元件提供用于形成压控振荡器或其他电路的受控延迟。 延迟元件提供高增益,使其能够在多级延迟元件电路中有用。 所描述的电路包括级联互补差分放大器和复制偏置钳位。

    System and method for serial to parallel data conversion using delay line
    42.
    发明授权
    System and method for serial to parallel data conversion using delay line 失效
    使用延迟线串行到并行数据转换的系统和方法

    公开(公告)号:US5777567A

    公开(公告)日:1998-07-07

    申请号:US663583

    申请日:1996-06-14

    IPC分类号: H03M9/00

    CPC分类号: H03M9/00

    摘要: A serial data to parallel data converter is disclosed which has the advantage of accurately converting high frequency serial data to parallel data while using clock signals operating at a relatively low frequency. A low bit error rate is achieved by avoiding the use of multiple high speed clock lines typically found in other converters. The simplified circuit design also has the advantage of requiring minimal semiconductor layout area and reduced power requirements. One embodiment includes a buffer, a first data delay line, coupled to receive serial data from the buffer, and a phase lock loop (PLL), coupled to receive serial data from the buffer. A second data delay line is configured as a voltage controlled oscillator (VCO) within the PLL. The PLL locks onto the incoming serial data signal and provides a control signal back to the first data delay line to ensure it is storing serial data bits as they arrive. After n-bits of data have been transmitted the first data delay line contains a n-bit wide parallel word.

    摘要翻译: 公开了一种串行数据到并行数据转换器,其具有在使用以较低频率工作的时钟信号的情况下将高频串行数据精确地转换为并行数据的优点。 通过避免使用通常在其他转换器中发现的多个高速时钟线来实现低误码率。 简化的电路设计还具有要求最小的半导体布局面积和降低的功率要求的优点。 一个实施例包括耦合以从缓冲器接收串行数据的缓冲器,第一数据延迟线和耦合以从缓冲器接收串行数据的锁相环(PLL)。 第二个数据延迟线被配置为PLL内的压控振荡器(VCO)。 PLL锁定到输入的串行数据信号上,并将控制信号提供回第一个数据延迟线,以确保它们到达时存储串行数据位。 在发送n位数据之后,第一数据延迟线包含n位宽的并行字。

    Programmable asynchronous register initialization circuit
    43.
    发明授权
    Programmable asynchronous register initialization circuit 失效
    可编程异步寄存器初始化电路

    公开(公告)号:US4684826A

    公开(公告)日:1987-08-04

    申请号:US633164

    申请日:1984-07-20

    CPC分类号: H03K3/2865 H03K3/289

    摘要: A circuit constructed in accordance with this invention includes means for asynchronously forcing a flip-flop (70) or a register to a programmable logical state in response to an initialization input signal (I). In one embodiment, a D-type flip-flop (70) is provided having data input terminal (71), a clock input terminal (77), a data output terminal (103), an initialization input terminal (41), and a programming input terminal (11). When an initialization input signal I is received, a predefined output signal is immediately placed on the data output terminal (103). The predefined output signal is defined by the status of a fuse (13), which is opened, if desired, via the programming input terminal (11). When an initialization input signal is not received, the flip-flop (70) operates as a normal D-type flip-flop.

    摘要翻译: 根据本发明构造的电路包括响应于初始化输入信号(& upbar&I)而将触发器(70)或寄存器异步强制到可编程逻辑状态的装置。 在一个实施例中,提供了一种D型触发器(70),具有数据输入端(71),时钟输入端(77),数据输出端(103),初始化输入端(41)和 编程输入端子(11)。 当接收到初始化输入信号&upbar&I时,预定义的输出信号立即被放置在数据输出端子(103)上。 预定义的输出信号由保险丝(13)的状态定义,熔丝(13)如果需要,通过编程输入端(11)打开。 当未接收到初始化输入信号时,触发器(70)作为正常D型触发器工作。

    High conductance circuit for programmable integrated circuit
    44.
    发明授权
    High conductance circuit for programmable integrated circuit 失效
    可编程集成电路的高电导电路

    公开(公告)号:US4609998A

    公开(公告)日:1986-09-02

    申请号:US562506

    申请日:1983-12-15

    IPC分类号: G11C17/08 G11C17/18 G11C17/00

    CPC分类号: G11C17/18

    摘要: A unique programming circuit, suitable for use with programmable read-only memories (PROM), or other circuits utilizing programmable fuses, is provided which overcomes several distinct disadvantages of prior art programming circuits. The programming circuit of this invention includes a Darlington pair of programming transistors which allows only a single programming transistor to be made large in order to carry the large programming current, and only a single high current drive signal need be applied to the single programming transistor, thereby minimizing power consumption and integrated circuit die area.

    摘要翻译: 提供了一种独特的编程电路,适用于可编程只读存储器(PROM)或使用可编程保险丝的其他电路,克服了现有技术编程电路的几个显着缺点。 本发明的编程电路包括达林顿编程晶体管对,其仅允许单个编程晶体管被制造得很大以便承载大的编程电流,并且仅需要将单个高电流驱动信号施加到单个编程晶体管, 从而最大限度地降低功耗和集成电路裸片面积。

    EMI reduction using tunable delay lines
    45.
    发明授权
    EMI reduction using tunable delay lines 有权
    使用可调延迟线降低EMI

    公开(公告)号:US07333527B2

    公开(公告)日:2008-02-19

    申请号:US10306785

    申请日:2002-11-27

    摘要: The clock signal is the dominant source of electromagnetic interference (EMI) for many digital electronic devices. EMI generated by these electronic devices must be suppressed to avoid interference with other electronic devices and to satisfy FCC regulations. The present invention seeks to reduce EMI emissions by phase-modulating the clock signal using tunable delay lines. Phase modulation causes a spreading of the energy spectrum of the clock signal thereby reducing EMI emissions. In addition, the present invention is capable of generating a wide energy spectrum in a short time interval. Furthermore, the present invention can be similarly applied to other signals which exhibit a periodic or timing nature due to a correlation with the clock signal.

    摘要翻译: 时钟信号是许多数字电子设备的电磁干扰(EMI)的主要来源。 必须抑制由这些电子设备产生的EMI,以避免与其他电子设备的干扰,并符合FCC规定。 本发明寻求通过使用可调延迟线对时钟信号进行相位调制来减少EMI发射。 相位调制导致时钟信号的能量谱的扩展,从而减少EMI辐射。 此外,本发明能够在短时间间隔内产生宽的能量谱。 此外,由于与时钟信号的相关性,本发明可以类似地应用于表现出周期性或定时性质的其他信号。

    Method and apparatus for detecting the position of light which is incident to a semiconductor die
    46.
    发明授权
    Method and apparatus for detecting the position of light which is incident to a semiconductor die 有权
    用于检测入射到半导体管芯的光的位置的方法和装置

    公开(公告)号:US07217915B2

    公开(公告)日:2007-05-15

    申请号:US10840865

    申请日:2004-05-07

    IPC分类号: H01L31/00 H01L27/00

    摘要: One embodiment of the present invention provides a system for detecting light which is incident to a first semiconductor die. During operation, the system receives light at a photo-detector on the first semiconductor die, wherein associated circuitry converts the received light into a current. In doing so, the associated circuitry biases a gate voltage of an integrating transistor to be close to a threshold voltage of the integrating transistor, and applies the current from the photo-detector to the gate of the integrating transistor so that the current causes a charge to collect at the gate of the integrating transistor. This charge builds up and causes the integrating transistor to switch, thereby indicating that light has been received by the photo-detector.

    摘要翻译: 本发明的一个实施例提供了一种用于检测入射到第一半导体管芯的光的系统。 在操作期间,系统在第一半导体管芯上的光检测器处接收光,其中相关联的电路将接收的光转换成电流。 在这样做时,相关联的电路将积分晶体管的栅极电压偏置为接近积分晶体管的阈值电压,并将来自光电检测器的电流施加到积分晶体管的栅极,使得电流导致电荷 在积分晶体管的栅极处收集。 该电荷积聚并使积分晶体管切换,从而指示光已经被光电检测器接收。

    Integrated circuit and method of adjusting capacitance of a node of an integrated circuit
    47.
    发明授权
    Integrated circuit and method of adjusting capacitance of a node of an integrated circuit 有权
    集成电路的调节电容的集成电路及方法

    公开(公告)号:US06867629B2

    公开(公告)日:2005-03-15

    申请号:US10247401

    申请日:2002-09-19

    IPC分类号: H01L27/08 H03K19/00 H03H11/26

    CPC分类号: H03K19/00 H01L27/0808

    摘要: The present invention relates to an integrated circuit device and method of adjusting capacitance of a node of an integrated circuit In one embodiment, the device comprises a first digital input, a first parasitic capacitance block, a first output, a second digital input, a second parasitic capacitance block and a second output. The first parasitic capacitance block includes an inverter, a variable capacitance element, and a wire capacitance element. The first parasitic capacitance block has a capacitance that is a function of the first digital input. The first output is responsive to the first parasitic capacitance block, and the second output is responsive to the second parasitic capacitance block. In a particular embodiment, the method includes selecting a logic state of a digital input; applying the digital input to a parasitic capacitance block having an output, the output having a first capacitance when the digital input is in first logic state and a second capacitance when the digital input is in a second logic state; and adjusting a capacitance with respect to a second circuit node within the integrated circuit by applying the output to the second circuit node.

    摘要翻译: 本发明涉及一种调整集成电路节点的电容的集成电路器件和方法。在一个实施例中,器件包括第一数字输入,第一寄生电容块,第一输出,第二数字输入,第二数字输入 寄生电容块和第二输出。 第一寄生电容块包括反相器,可变电容元件和线电容元件。 第一寄生电容块具有作为第一数字输入的函数的电容。 第一输出响应于第一寄生电容块,第二输出响应于第二寄生电容块。 在特定实施例中,该方法包括选择数字输入的逻辑状态; 将数字输入施加到具有输出的寄生电容块,当数字输入处于第一逻辑状态时,输出具有第一电容,当数字输入处于第二逻辑状态时具有第二电容; 以及通过将所述输出施加到所述第二电路节点来调整相对于所述集成电路内的第二电路节点的电容。

    Method and apparatus for probing an integrated circuit through capacitive coupling

    公开(公告)号:US06600325B2

    公开(公告)日:2003-07-29

    申请号:US09778622

    申请日:2001-02-06

    IPC分类号: G01R3108

    摘要: One embodiment of the present invention provides a system for capacitively probing electrical signals within an integrated circuit. This system operates by placing a probe conductor in close proximity to, but not touching, a target conductor within the integrated circuit. In this position, the probe conductor and the target conductor form a capacitor that stores a charge between the probe conductor and the target conductor. Next, the system detects a change in a probe voltage on the probe conductor caused by a change in a target voltage on the target conductor, and then determines a logic value for the target conductor based on the change in the probe voltage. In one embodiment of the present invention, determining the logic value for the target conductor involves, determining a first value if the probe voltage decreases, and determining a second value if the probe voltage increases.

    Signal buffers for printed circuit boards

    公开(公告)号:US06515501B2

    公开(公告)日:2003-02-04

    申请号:US09873093

    申请日:2001-06-01

    IPC分类号: H03K19003

    摘要: An improved signal buffer configuration has been developed for transmitting communication signals across line traces between ICs on a printed circuit board, printed wiring board, multi-chip module, integrated circuit carrier or package, or other interconnect substrate. For example, in some realizations, multiple ICs having mismatched input and output impedances are mounted on an printed circuit board and communicate with each other via line traces. A signal buffer IC is placed in-line with the connecting line trace. The buffer is sized to fit within the pitch spacing of the line trace and contains an input impedance control circuit and an output impedance control circuit. These impedance control circuits are adapted to receive a control signal to set the input and output impedances of the buffer to correspond to the impedances of the connecting line traces. In this manner, the impedances between the ICs connected by this line trace are effectively matched and transmission line errors between them are reduced.

    Resistive arrayed high speed output driver with pre-distortion
    50.
    发明授权
    Resistive arrayed high speed output driver with pre-distortion 有权
    电阻式阵列高速输出驱动器,具有预失真

    公开(公告)号:US06329836B1

    公开(公告)日:2001-12-11

    申请号:US09580312

    申请日:2000-05-26

    IPC分类号: H03K1716

    摘要: A high speed self-terminated output driver includes an array of resistive drivers that are pulse-activated in succession to process a corresponding succession of data bits. The output driver thus synthesizes an output waveform which behaves similar to a single resistive drive element responding to the non-bandlimited input signal. In various embodiment, the output driver provides for digitally programmable output impedance and pre-distortion levels.

    摘要翻译: 高速自终端输出驱动器包括电阻驱动器阵列,其被连续地脉冲激活以处理对应的一系列数据位。 因此,输出驱动器合成响应于非带限输入信号的类似于单个电阻驱动元件的输出波形。 在各种实施例中,输出驱动器提供数字可编程输出阻抗和预失真电平。