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    Semiconductor integrated circuit
    3.
    发明授权
    Semiconductor integrated circuit 有权
    半导体集成电路

    公开(公告)号：US09306541B2

    公开(公告)日：2016-04-05

    申请号：US14110330

    申请日：2012-03-21

    Applicant: Yasuyuki Suzuki

    Inventor： Yasuyuki Suzuki

    IPC: H03K17/16 ,  H03H11/28 ,  H03F3/45 ,  H03F1/38 ,  H03K3/2885 ,  H03K3/289

    CPC classification number: H03H11/28 ,  H03F1/38 ,  H03F3/45085 ,  H03F3/45475 ,  H03F2203/45138 ,  H03F2203/45652 ,  H03K3/2885 ,  H03K3/289

    Abstract: In an integrated circuit having a feedback amplifier circuit composed of the feedback which feedbacks a part of the output signal to the input side in the first stage, a semiconductor integrated circuit of the present invention can suppress the occurrence of the data signal distortion and the gain peaking of the frequency characteristic generated by inter-stage wiring between the first stage and the latter stage.A semiconductor integrated circuit of the present invention includes the first circuit and the second circuit having the first output connected to the first circuit, and the second output that is a signal similar to said first output is outputted from between said first circuit and said second circuit. In addition, a semiconductor integrated circuits of the present invention has the feature that the output impedance pulled out from between said first circuit and said second circuit, the input impedance of the circuit connected to the latter stage of said second circuit and the characteristic impedance of the wiring which connects said second output with a circuit connected to the latter stage of said second circuit are equal to each other.

    Abstract translation: 在具有反馈放大电路的集成电路中，反馈放大电路由在第一级反馈输出信号的一部分输入侧的反馈构成，本发明的半导体集成电路可以抑制数据信号失真和增益的发生 在第一阶段和后一阶段之间由阶段布线产生的频率特性的峰值。 本发明的半导体集成电路包括具有连接到第一电路的第一输出的第一电路和第二电路，并且作为类似于所述第一输出的信号的第二输出从所述第一电路和所述第二电路之间输出 。 此外，本发明的半导体集成电路具有从所述第一电路和所述第二电路之间拉出的输出阻抗，连接到所述第二电路的后级的电路的输入阻抗和所述第二电路的特性阻抗 将所述第二输出与连接到所述第二电路的后级的电路连接的布线彼此相等。

    Comparator with Self-Limiting Positive Feedback
    5.
    发明申请
    Comparator with Self-Limiting Positive Feedback 有权
    具有自限制正反馈的比较器

    公开(公告)号：US20130293306A1

    公开(公告)日：2013-11-07

    申请号：US13933499

    申请日：2013-07-02

    Applicant: Robert Bosch GmbH

    Inventor： Robert Wolf ,  Christoph Lang ,  Xinyu Xing ,  Sam Kavusi

    IPC: H03F1/38

    CPC classification number: H03F1/38 ,  H03K5/08 ,  H03K5/2481

    Abstract: A method and circuit for attenuating positive feedback in a comparator in one embodiment includes an amplifier configured to compare a first input signal with a second input signal and to provide an output based upon the comparison, a non-linear function with a first input operably connected to an output of the amplifier, and a feedback loop operably connected to the output of the non-linear function and to a second input of the non-linear function, the feedback loop including a feedback limiting circuit configured to attenuate a feedback signal to the second input of the non-linear function.

    Abstract translation: 在一个实施例中用于衰减比较器中的正反馈的方法和电路包括：放大器，被配置为将第一输入信号与第二输入信号进行比较，并且基于比较提供输出，非线性函数与第一输入可操作地连接 耦合到放大器的输出端，以及可操作地连接到非线性功能的输出端和非线性功能的第二输入端的反馈回路，反馈回路包括反馈限制电路，该反馈限制电路被配置为将反馈信号衰减到 第二输入的非线性函数。

    COMPARATOR WITH SELF-LIMITING POSITIVE FEEDBACK
    6.
    发明申请
    COMPARATOR WITH SELF-LIMITING POSITIVE FEEDBACK 有权
    具有自限定正反馈的比较器

    公开(公告)号：US20110001515A1

    公开(公告)日：2011-01-06

    申请号：US12497216

    申请日：2009-07-02

    Applicant: Robert Wolf ,  Christoph Lang ,  Xinyu Xing ,  Sam Kavusi

    Inventor： Robert Wolf ,  Christoph Lang ,  Xinyu Xing ,  Sam Kavusi

    IPC: G01R19/00

    CPC classification number: H03F1/38 ,  H03K5/08 ,  H03K5/2481

    Abstract: A method and circuit for attenuating positive feedback in a comparator in one embodiment includes an amplifier configured to compare a first input signal with a second input signal and to provide an output based upon the comparison, a non-linear function with a first input operably connected to an output of the amplifier, and a feedback loop operably connected to the output of the non-linear function and to a second input of the non-linear function, the feedback loop including a feedback limiting circuit configured to attenuate a feedback signal to the second input of the non-linear function.

    Abstract translation: 在一个实施例中用于衰减比较器中的正反馈的方法和电路包括：放大器，被配置为将第一输入信号与第二输入信号进行比较，并且基于比较提供输出，非线性函数与第一输入可操作地连接 耦合到放大器的输出端，以及可操作地连接到非线性功能的输出端和非线性功能的第二输入端的反馈回路，反馈回路包括反馈限制电路，该反馈限制电路被配置为将反馈信号衰减到 第二输入的非线性函数。

    High performance charge detection amplifier for CCD image sensors
    7.
    发明授权
    High performance charge detection amplifier for CCD image sensors 有权
    CCD图像传感器的高性能电荷检测放大器

    公开(公告)号：US07468500B2

    公开(公告)日：2008-12-23

    申请号：US11224812

    申请日：2005-09-13

    Applicant: Jaroslav Hynecek

    Inventor： Jaroslav Hynecek

    IPC: H01L27/00

    CPC classification number: H04N5/335 ,  H01L27/148 ,  H03F1/38 ,  H03F3/08 ,  H03F3/345 ,  H03F3/505 ,  H03F2203/5015

    Abstract: The CCD charge detection amplifier includes a floating diffusion charge detection node biased from a voltage reference node; a reset device coupled between the floating Diffusion charge detection node and the voltage reference node; a first source follower stage having a control node coupled to the charge detection node; and a positive feedback device coupled in series with the source follower stage and having a control node biased from the voltage reference node.

    Abstract translation: CCD电荷检测放大器包括从电压参考节点偏置的浮动扩散电荷检测节点; 耦合在浮动扩散电荷检测节点和电压参考节点之间的复位装置; 具有耦合到所述电荷检测节点的控制节点的第一源极跟随器级; 以及与源极跟随器级串联耦合并且具有从电压参考节点偏置的控制节点的正反馈装置。

    Technique to improve the gain and signal to noise ratio in CMOS switched capacitor amplifiers
    8.
    发明申请
    Technique to improve the gain and signal to noise ratio in CMOS switched capacitor amplifiers 有权
    提高CMOS开关电容放大器的增益和信噪比的技术

    公开(公告)号：US20070182482A1

    公开(公告)日：2007-08-09

    申请号：US11728537

    申请日：2007-03-26

    Applicant: Leonard Forbes ,  David Cuthbert

    Inventor： Leonard Forbes ,  David Cuthbert

    IPC: H03F1/36

    CPC classification number: H03F3/005 ,  H03F1/26 ,  H03F1/38 ,  H03F3/45183 ,  H03F2203/45166 ,  H03F2203/45224 ,  H03F2203/45514 ,  H03F2203/45551 ,  H03F2203/45674 ,  H03F2203/45722

    Abstract: The present invention comprises switched capacitor amplifiers including positive feedback on semiconductor devices, wafers, and systems incorporating same and methods for amplifying signals using positive feedback, while maintaining a stable gain and producing an improved signal-to-noise ratio. One embodiment includes a switched capacitor amplifier comprising a CMOS amplifier, a feed-in switched capacitor, and a feedback switched capacitor. The feed-in switched capacitor couples an input signal to the non-inverting input of the CMOS amplifier. Similarly, the feedback switched capacitor couples the amplifier output to the non-inverting input to create a positive feedback loop. A capacitance of the feedback switched capacitor relative to a capacitance of the feed-in switched capacitor comprises a feedback proportion. This feedback proportion may be configured to maintain a stable gain of the switched capacitor amplifier and increase a signal-to-noise ratio of the switched capacitor amplifier, even with the switched capacitor amplifier in a positive feedback arrangement.

    Abstract translation: 本发明包括开关电容放大器，其包括对半导体器件的正反馈，晶圆及其结合的系统以及使用正反馈放大信号的方法，同时保持稳定的增益并产生改善的信噪比。 一个实施例包括具有CMOS放大器，馈入开关电容器和反馈开关电容器的开关电容放大器。 馈入开关电容将输入信号耦合到CMOS放大器的非反相输入。 类似地，反馈开关电容器将放大器输出耦合到非反相输入端以产生正反馈回路。 反馈开关电容器相对于馈入开关电容器的电容的电容包括反馈比例。 该反馈比例可以被配置为保持开关电容放大器的稳定增益，并且即使开关电容放大器处于正反馈布置中，也可提高开关电容放大器的信噪比。

    Ultra low-frequency response, DC-blocked low-noise amplifier
    9.
    发明申请
    Ultra low-frequency response, DC-blocked low-noise amplifier 有权
    超低频响应，直流阻塞低噪声放大器

    公开(公告)号：US20060197597A1

    公开(公告)日：2006-09-07

    申请号：US11173507

    申请日：2005-07-01

    Applicant: Ravi Ananth

    Inventor： Ravi Ananth

    IPC: H03F3/45

    CPC classification number: H03F3/187 ,  H03F1/26 ,  H03F1/38 ,  H03F3/005 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/45968 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45156 ,  H03F2203/45296 ,  H03F2203/45332 ,  H03F2203/45512 ,  H03F2203/45544 ,  H03F2203/45546 ,  H03F2203/45631 ,  H03F2203/45632 ,  H03F2203/45686

    Abstract: An amplifier circuit is disclosed that allows for practical integrated circuit implementation of a dc-blocked, low-noise differential amplifier capable of amplifying ultra low-frequency signals and amplitudes ranging upwards of a few microvolts. DC-blocking capacitors having a capacitance value close to that of the effective input capacitance of the low-noise amplifier's inputs can be used by incorporating a positive feedback mechanism that tracks any variations in the amplifier gain or integrated circuit's technology process and lowers or cancels the input parasitic capacitances. Advantageously, the parasitic capacitance of transistors, typically field effect transistors, located on an integrated circuit chip are used in the feedback mechanism. This reduces the capacitive voltage division loss of the signal at the input of the amplifier while still allowing for the use of very small values of dc-blocking capacitance. No other active elements other than the amplifier itself are required to attain a low area, integrated circuit implementation of a dc-blocked, yet ultra low-frequency high pass filtered, low-noise amplifier.

    Abstract translation: 公开了一种放大器电路，其允许实现一种直流阻塞的低噪声差分放大器的实际集成电路，该差分放大器能够放大超过几微伏范围的超低频信号和幅度。 具有接近低噪声放大器输入的有效输入电容的电容值的隔直电容器可以通过结合一个正反馈机制来使用，该正反馈机制跟踪放大器增益或集成电路技术过程中的任何变化，并降低或取消 输入寄生电容。 有利地，在反馈机制中使用位于集成电路芯片上的晶体管（通常为场效应晶体管）的寄生电容。 这降低了放大器输入端的信号的电容分压损耗，同时仍然允许使用非常小的直流阻塞电容值。 除了放大器本身之外，不需要其他有源元件来实现直流阻塞但是超低频高通滤波的低噪声放大器的低面积集成电路实现。

    Regulator with variable capacitor for stability compensation
    10.
    发明申请
    Regulator with variable capacitor for stability compensation 有权
    具有可变电容器的稳压器，用于稳定补偿

    公开(公告)号：US20050127885A1

    公开(公告)日：2005-06-16

    申请号：US10738382

    申请日：2003-12-16

    Applicant: Soon-Gil Jung

    Inventor： Soon-Gil Jung

    IPC: G05F1/40 ,  G05F1/565 ,  H03F1/38

    CPC classification number: H03F1/38 ,  G05F1/565

    Abstract: A voltage regulator with a variable compensation capacitor is capable of driving a large variable dynamic current load. The regulator includes an error amplifier and an output stage amplifier. The variable compensation capacitor is disposed between the output terminal of the error amplifier and the output terminal of the output stage amplifier. In one embodiment, a NMOS transistor is disposed between the output terminal of the output stage amplifier and the variable compensation capacitor. The variable compensation capacitor may be, e.g., a PMOS transistor with the source and drain tied together. In one embodiment, a plurality of regulators is included on chip, e.g., such as a programmable device, where the output terminals of each regulator is tied together and used to drive the same load.

    Abstract translation: 具有可变补偿电容器的电压调节器能够驱动大的可变动态电流负载。 调节器包括误差放大器和输出级放大器。 可变补偿电容器设置在误差放大器的输出端和输出级放大器的输出端之间。 在一个实施例中，NMOS晶体管设置在输出级放大器的输出端和可变补偿电容之间。 可变补偿电容器可以是例如将源极和漏极连接在一起的PMOS晶体管。 在一个实施例中，多个调节器包括在芯片上，例如可编程器件，其中每个调节器的输出端子被连接在一起并用于驱动相同的负载。

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