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    Integrated circuit apparatus and method of compensating a current
    3.
    发明授权
    Integrated circuit apparatus and method of compensating a current 有权
    集成电路装置及补偿电流的方法

    公开(公告)号：US07511565B2

    公开(公告)日：2009-03-31

    申请号：US11455376

    申请日：2006-06-19

    Applicant: Fesseha Tessera Seifu ,  Marco Fornasari ,  Samir Aboulhouda

    Inventor： Fesseha Tessera Seifu ,  Marco Fornasari ,  Samir Aboulhouda

    IPC: G05F1/10 ,  H03F3/45

    CPC classification number: H03F1/301 ,  H03F3/45085 ,  H03F3/45179 ,  H03F3/45484 ,  H03F2203/45286 ,  H03F2203/45482 ,  H03F2203/45484

    Abstract: An integrated circuit comprises a gain stage circuit coupled to a compensation circuit. Both the gain stage circuit and the compensation circuit respectively comprise a first current source and a second current source that are subject to the same process variations. A negative feedback circuit is used to generate a corrective current in relation to the second current source, indicative of a current that needs to flow through a load in addition to a current flowing through the second current source in order for a variable voltage to be substantially equal to a reference voltage used to drive the first and second current sources. A compensating current corresponding to the corrective current generated for the second current source is applied to the first current source to compensate for process variation in the gain stage circuit in respect to the first current source.

    Abstract translation: 集成电路包括耦合到补偿电路的增益级电路。 增益级电路和补偿电路都分别包括受到相同工艺变化的第一电流源和第二电流源。 使用负反馈电路来产生相对于第二电流源的校正电流，其指示除了流过第二电流源的电流之外还需要流过负载的电流，以使可变电压基本上 等于用于驱动第一和第二电流源的参考电压。 与第二电流源产生的校正电流相对应的补偿电流被施加到第一电流源，以补偿增益级电路相对于第一电流源的工艺变化。

    Differential-mode current feedback amplifiers
    5.
    发明授权
    Differential-mode current feedback amplifiers 有权
    差分电流反馈放大器

    公开(公告)号：US07132860B2

    公开(公告)日：2006-11-07

    申请号：US11082752

    申请日：2005-03-17

    Applicant: Jeffrey S. Lehto

    Inventor： Jeffrey S. Lehto

    IPC: H03F3/45

    CPC classification number: H03F3/45484 ,  H03F3/4508 ,  H03F3/45475 ,  H03F2200/36 ,  H03F2200/91 ,  H03F2203/45076 ,  H03F2203/45116 ,  H03F2203/45138 ,  H03F2203/45248 ,  H03F2203/45366 ,  H03F2203/45528 ,  H03F2203/45641 ,  H03F2203/45642

    Abstract: Amplifier circuits that generate CM currents are provided. Amplifier circuits that generator DM currents are also provided. Fully differential current feedback amplifier circuits with separate CM and DM inputs are also provided. Such amplifier circuits combine the benefits of CFA designs, such as high slew rate and bandwidth, with independent control of DM and CM signals. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures and the claims.

    Abstract translation: 提供产生CM电流的放大器电路。 还提供发生器DM电流的放大器电路。 还提供了具有单独CM和DM输入的全差分电流反馈放大器电路。 这种放大器电路结合了CFA设计的优点，如高转换速率和带宽，可独立控制DM和CM信号。 本说明书不是对本发明的完整描述或限制本发明的范围。 本发明的其他特征，方面和目的可以从对说明书，附图和权利要求的评论中获得。

    Apparatus and method for compensating operating current in an amplifier when supply voltage varies
    7.
    发明授权
    Apparatus and method for compensating operating current in an amplifier when supply voltage varies 有权
    当电源电压变化时，补偿放大器工作电流的装置和方法

    公开(公告)号：US07012467B2

    公开(公告)日：2006-03-14

    申请号：US10796954

    申请日：2004-03-10

    Applicant: Mark W. Morgan ,  Yanli Fan

    Inventor： Mark W. Morgan ,  Yanli Fan

    IPC: H03F3/45

    CPC classification number: H03F3/45085 ,  H03F3/45484

    Abstract: An apparatus for compensating operating current in an amplifier device when supply voltage to the amplifier device decreases below a predetermined value at an input voltage supply locus includes: (a) A first control circuit coupled with the input voltage supply locus. The first control circuit generates an output signal at an output locus when the supply voltage decreases below the predetermined value. (b) A second control circuit coupled with the output locus and coupled with the amplifier device. The second control circuit effects the compensating in response to the output signal.

    Abstract translation: 一种用于在放大器装置的电源电压降低到输入电压供应轨迹下的预定值时补偿放大器装置中的工作电流的装置包括：（a）与输入电压供应轨迹相连的第一控制电路。 当电源电压降低到预定值以下时，第一控制电路在输出轨迹处产生输出信号。 （b）与输出轨迹耦合并与放大器装置耦合的第二控制电路。 第二控制电路响应于输出信号而进行补偿。

    Push-pull output driver and operational amplifier using same
    8.
    发明授权
    Push-pull output driver and operational amplifier using same 有权

    公开(公告)号：US12101068B2

    公开(公告)日：2024-09-24

    申请号：US17349586

    申请日：2021-06-16

    Applicant: MACRONIX INTERNATIONAL CO., LTD.

    Inventor： Yih-Shan Yang

    IPC: H03F3/45 ,  H03K3/26 ,  H03K3/356

    CPC classification number: H03F3/45632 ,  H03F3/45174 ,  H03F3/45273 ,  H03F3/45484 ,  H03K3/26 ,  H03K3/356034

    Abstract: A voltage driver circuit for an output stage of an operational amplifier, or other circuits, includes a level shifter and an output driver including a source follower and a common source amplifier in a push-pull configuration. The level shifter generates a node voltage as a function of an input voltage on the input node. The output driver including a first transistor having a control terminal receiving the node voltage, and connected between a supply voltage and an output node, and a second transistor having a control terminal receiving the input voltage from the input node, and connected between the output node and a reference voltage, wherein the first and second transistors have a common conductivity type.

    Variable gain amplifier with temperature compensated gain
    9.
    发明授权
    Variable gain amplifier with temperature compensated gain 有权

    公开(公告)号：US12028025B2

    公开(公告)日：2024-07-02

    申请号：US17397833

    申请日：2021-08-09

    Applicant: MACOM Technology Solutions Holdings, Inc.

    Inventor： John R. Francis

    IPC: H03F3/45 ,  H03F1/30 ,  H03G3/30

    CPC classification number: H03F1/30 ,  H03F3/45475 ,  H03G3/30 ,  H03F3/45484 ,  H03F2200/447 ,  H03G2201/103

    Abstract: An amplifier with temperature compensation where the amplifier has transistors configured to amplify a received signal to create an amplified signal. The amplifier gain changes over temperature. A gain control circuit, connected to the amplifier, that adjusts the amplifier gain responsive to a gain control signal. A temperature compensation circuit includes numerous elements. A constant current source that generates a constant current which is used to create a constant voltage. A temperature dependent current source that generates a temperature dependent current which is used to create a temperature dependent voltage, such that the temperature dependent current source has an inverse temperature dependance as compared to the amplifier. An operational amplifier compares the constant voltage to the temperature dependent voltage and generates an offset signal which varies over temperature. A gated buffer is configured to receive the offset signal and responsive thereto, selectively modify the gain control signal.

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