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    Dynamic current source for amplifier integrator stages
    2.
    发明授权
    Dynamic current source for amplifier integrator stages 有权
    放大器积分器级的动态电流源

    公开(公告)号：US09473075B2

    公开(公告)日：2016-10-18

    申请号：US14341364

    申请日：2014-07-25

    Applicant: ANALOG DEVICES, INC.

    Inventor： Sandro Herrera

    IPC: H03F3/26 ,  H03F1/30 ,  H03F3/30 ,  H03F3/345

    CPC classification number: H03F1/307 ,  H03F3/301 ,  H03F3/3069 ,  H03F3/345 ,  H03F2200/264 ,  H03F2203/30015 ,  H03F2203/30036 ,  H03F2203/30061 ,  H03F2203/30063

    Abstract: An amplifier system may include a current source, an impedance element responsive to a current change, and a feedback controller generating a control signal based on impedance element response. Current source may supply current to a pair of output elements, one of which being controlled by an integrator, and a portion of the integrator. Impedance element may have terminals coupled to inputs of the output elements and may be configured to experience a change in voltage based on a change in current supplied to its input. Feedback controller may have a pair of inputs coupled to the terminals of impedance element and an output to control the current source based on a detected change in voltage across the impedance element. Current source may be varied based on the control signal to maintain a constant current supplied to the input of the impedance elements.

    Abstract translation: 放大器系统可以包括电流源，响应于电流变化的阻抗元件以及基于阻抗元件响应产生控制信号的反馈控制器。 电流源可以向一对输出元件提供电流，其中一个输出元件由积分器和积分器的一部分控制。 阻抗元件可以具有耦合到输出元件的输入的端子，并且可以被配置为基于提供给其输入的电流的变化而经历电压的变化。 反馈控制器可以具有耦合到阻抗元件的端子的一对输入和基于检测到的阻抗元件两端的电压变化来控制电流源的输出。 电流源可以基于控制信号而变化，以保持提供给阻抗元件的输入端的恒定电流。

    Operational amplifier
    4.
    发明授权
    Operational amplifier 失效
    运算放大器

    公开(公告)号：US6163217A

    公开(公告)日：2000-12-19

    申请号：US292935

    申请日：1999-04-16

    Applicant: Kunihiro Matsubara ,  Hidenobu Ito ,  Shinichi Nakagawa

    Inventor： Kunihiro Matsubara ,  Hidenobu Ito ,  Shinichi Nakagawa

    IPC: H03F1/32 ,  H03F1/34 ,  H03F3/30 ,  H03F3/45

    CPC classification number: H03F3/3023 ,  H03F3/45183 ,  H03F2203/30021 ,  H03F2203/30036 ,  H03F2203/45508 ,  H03F2203/45658

    Abstract: A current charged into or discharged from a phase-compensating capacitor C1 in an output circuit is controlled by a level shift circuit so that the current is kept constant for input signals inputted to the input terminals IN+ and IN- of a differential amplifier circuit, and also a current charged into or discharged from a phase-compensating capacitor C2 is controlled by the current correcting circuit so that the current become equal to a constant current controlled by the level shift circuit, namely to a current charged into or discharged from the phase-compensating capacitor C1. Therefore, even if a quickly rising or falling signal is inputted into the differential amplifier circuit, the MOS transistor MP11 or MN11 is not set in an offset state, which prevents generation of an overshoot or an undershot in the output terminal.

    Abstract translation: 通过电平移位电路来控制在输出电路中充入或从相位补偿电容器C1放电的电流，使得电流对于输入到差分放大器电路的输入端IN +和IN-的输入信号保持恒定，以及 另外，由电流校正电路控制充电到相位补偿电容器C2的放电电流，也可以由电平移位电路控制的电流变为等于从相位补偿电容器C2充放电的电流， 补偿电容器C1。 因此，即使快速上升或下降信号被输入到差分放大器电路中，MOS晶体管MP11或MN11也不被设置在偏移状态，这防止了在输出端子中产生过冲或欠压。

    High output swing operational amplifier using low voltage devices
    5.
    发明授权
    High output swing operational amplifier using low voltage devices 失效
    高输出摆幅运算放大器采用低压器件

    公开(公告)号：US6018267A

    公开(公告)日：2000-01-25

    申请号：US37233

    申请日：1998-03-10

    Applicant: Hieu Van Tran ,  Anthony Dunne

    Inventor： Hieu Van Tran ,  Anthony Dunne

    IPC: H03F3/30 ,  H03F3/45

    CPC classification number: H03F3/3023 ,  H03F3/45192 ,  H03F2200/153 ,  H03F2203/30009 ,  H03F2203/30015 ,  H03F2203/30033 ,  H03F2203/30036 ,  H03F2203/30084 ,  H03F2203/30117 ,  H03F2203/45396 ,  H03F2203/45398 ,  H03F2203/45508 ,  H03F2203/45626

    Abstract: A power efficient high output swing operational ("HOOP") amplifier for integrated circuit analog signal processing is described. The operational amplifier includes a differential input stage and an output stage. The differential input stage is powered by a regular power supply while the output stage is powered by a voltage multiplier which results in a high voltage output swing without sinking significant power from the voltage multiplier. The high output voltage (e.g., 23 volts) is achieved using low voltage MOS devices. An output isolation technique is utilized to prevent possible latchup and contention. The operational amplifier also features a bias boot scheme to achieve a faster settling time from power up. In addition, the present invention provides realization of frequency compensation with highest possible breakdown and reduced noise coupling. A bias arrangement between input and output stages of the operational amplifier is used to further help reduce the power drawn from the voltage multiplier and decrease the settling time.

    Abstract translation: 描述了用于集成电路模拟信号处理的功率有效的高输出摆幅操作（“HOOP”）放大器。 运算放大器包括差分输入级和输出级。 差分输入级由常规电源供电，而输出级由电压倍增器供电，导致高电压输出摆幅，而不会从电压倍增器吸收大量功率。 使用低电压MOS器件实现高输出电压（例如，23伏特）。 使用输出隔离技术来防止可能的闭锁和争用。 运算放大器还具有偏置引导方案，以实现从上电更快的建立时间。 此外，本发明提供了具有最高可能击穿和降低的噪声耦合的频率补偿的实现。 使用运算放大器的输入和输出级之间的偏置布置来进一步帮助降低从电压倍增器引出的功率并降低建立时间。

    CMOS Operational amplifier with reduced power dissipation
    6.
    发明授权
    CMOS Operational amplifier with reduced power dissipation 失效
    CMOS运算放大器，功耗降低

    公开(公告)号：US4284957A

    公开(公告)日：1981-08-18

    申请号：US80153

    申请日：1979-09-28

    Applicant: Yusuf A. Haque

    Inventor： Yusuf A. Haque

    IPC: H03F3/16 ,  H03F3/18 ,  H03F3/26 ,  H03F3/30 ,  H03F3/45

    CPC classification number: H03F3/45179 ,  H03F3/3001 ,  H03F3/3008 ,  H03F3/3025 ,  H03F3/45183 ,  H03F2203/30018 ,  H03F2203/30033 ,  H03F2203/30036 ,  H03F2203/45188 ,  H03F2203/45224 ,  H03F2203/45508 ,  H03F2203/45674 ,  H03F2203/45692

    Abstract: An operational amplifier of MOSFET elements is disclosed which provides for a variable drive for an output stage that results in lower power dissipation and increased gain factor over comparable circuits using constant bias drive for the output stage. A bias section comprised of complementary MOS elements is connected to a single MOSFET that furnishes constant current to the signal input section of a differential amplifier section. The output of this differential amplifier is furnished by one path directly to one complementary MOSFET element of a high impedance output stage and by another path to a level shift section which provides an output to a second complementary MOSFET element of the output stage. Thus, the circuit functions under class A-B operation at low power dissipation and provides high open loop gain. Additional embodiments of the invention utilize three MOSFET elements in the level shift section or an additional output stage having an NPN transistor in combination with an N-channel MOSFET.

    Abstract translation: 公开了MOSFET元件的运算放大器，其为输出级提供可变驱动，其导致较低的功率耗散，并且在使用用于输出级的恒定偏置驱动的可比较电路上增加增益系数。 由互补MOS元​​件构成的偏置部分连接到向差分放大器部分的信号输入部分提供恒定电流的单个MOSFET。 该差分放大器的输出由一个路径直接提供给高阻抗输出级的一个互补MOSFET元件，并通过另一路径提供给电平移位部分，该电平移位部分向输出级的第二互补MOSFET元件提供输出。 因此，电路在低功耗下工作在A-B类以下，提供高开环增益。 本发明的另外的实施例利用电平移位部分中的三个MOSFET元件或者具有与N沟道MOSFET组合的NPN晶体管的附加输出级。

    DYNAMIC CURRENT SOURCE FOR AMPLIFIER INTEGRATOR STAGES
    8.
    发明申请
    DYNAMIC CURRENT SOURCE FOR AMPLIFIER INTEGRATOR STAGES 有权
    放大器积分器阶段的动态电流源

    公开(公告)号：US20160028355A1

    公开(公告)日：2016-01-28

    申请号：US14341364

    申请日：2014-07-25

    Applicant: Sandro HERRERA

    Inventor： Sandro HERRERA

    IPC: H03F3/45

    CPC classification number: H03F1/307 ,  H03F3/301 ,  H03F3/3069 ,  H03F3/345 ,  H03F2200/264 ,  H03F2203/30015 ,  H03F2203/30036 ,  H03F2203/30061 ,  H03F2203/30063

    Abstract: An amplifier system may include a current source, an impedance element responsive to a current change, and a feedback controller generating a control signal based on impedance element response. Current source may supply current to a pair of output elements, one of which being controlled by an integrator, and a portion of the integrator. Impedance element may have terminals coupled to inputs of the output elements and may be configured to experience a change in voltage based on a change in current supplied to its input. Feedback controller may have a pair of inputs coupled to the terminals of impedance element and an output to control the current source based on a detected change in voltage across the impedance element. Current source may be varied based on the control signal to maintain a constant current supplied to the input of the impedance elements.

    Abstract translation: 放大器系统可以包括电流源，响应于电流变化的阻抗元件以及基于阻抗元件响应产生控制信号的反馈控制器。 电流源可以向一对输出元件提供电流，其中一个输出元件由积分器和积分器的一部分控制。 阻抗元件可以具有耦合到输出元件的输入的端子，并且可以被配置为基于提供给其输入的电流的变化而经历电压的变化。 反馈控制器可以具有耦合到阻抗元件的端子的一对输入和基于检测到的阻抗元件两端的电压变化来控制电流源的输出。 电流源可以基于控制信号而变化，以保持提供给阻抗元件的输入端的恒定电流。

    Self-Biasing Radio Frequency Circuitry
    9.
    发明申请
    Self-Biasing Radio Frequency Circuitry 审中-公开
    自偏置射频电路

    公开(公告)号：US20140132349A1

    公开(公告)日：2014-05-15

    申请号：US14134223

    申请日：2013-12-19

    Applicant: MARVELL WORLD TRADE LTD.

    Inventor： Jinho Park ,  Yuan Lu ,  Li Lin

    IPC: H03F3/30

    CPC classification number: H03F3/3016 ,  H03F1/0272 ,  H03F1/083 ,  H03F3/195 ,  H03F3/3028 ,  H03F2200/294 ,  H03F2203/30021 ,  H03F2203/30027 ,  H03F2203/30031 ,  H03F2203/30033 ,  H03F2203/30036 ,  H03F2203/30084 ,  H03F2203/30117

    Abstract: The present disclosure describes self-biasing radio frequency circuitry. In some aspects a radio frequency (RF) signal is amplified via a circuit having a first transistor configured to source current to an output of the circuit and a second transistor configured to sink current from the output of the circuit, and another signal is provided, without active circuitry, from the output of the circuit to a gate of the first transistor effective to bias a voltage at the output of the circuit. By so doing, the output of the circuit can be biased without active circuitry which can reduce design complexity of and substrate area consumed by the circuit.

    Abstract translation: 本公开描述了自偏置射频电路。 在一些方面中，射频（RF）信号经由具有第一晶体管的电路被放大，该第一晶体管被配置为将电流源电流到电路的输出，以及第二晶体管，被配置为从电路的输出吸收电流，并且提供另一个信号， 没有有源电路，从电路的输出到第一晶体管的栅极有效地偏置电路输出处的电压。 通过这样做，电路的输出可以被偏置而没有有源电路，这可以降低电路消耗的设计复杂度和衬底面积。

    Operational amplifier
    10.
    发明授权
    Operational amplifier 失效
    运算放大器

    公开(公告)号：US06922105B2

    公开(公告)日：2005-07-26

    申请号：US10632849

    申请日：2003-08-04

    Applicant: Hiroshi Imai ,  Mitsuru Aoki ,  Hiroyuki Ban

    Inventor： Hiroshi Imai ,  Mitsuru Aoki ,  Hiroyuki Ban

    IPC: H03F1/52 ,  H03F3/30 ,  H03F3/45 ,  H03F3/26

    CPC classification number: H03F3/3071 ,  H03F3/45183 ,  H03F2203/30036 ,  H03F2203/30051 ,  H03F2203/45324 ,  H03F2203/45352 ,  H03F2203/45632 ,  H03F2203/45708

    Abstract: In an operational amplifier, a differential amplifying circuit is configured to amplify an input voltage inputted from the input terminal. An outputting transistor is connected to the output terminal. A driving transistor is connected to the differential amplifying circuit and the outputting transistor. The driving transistor turns on according to a control signal supplied from the differential amplifying circuit to the driving circuit. The driving transistor is also configured to drive the outputting transistor according to the control signal. A control signal reducing circuit, when a voltage is applied on the driving transistor through the outputting transistor, is configured to reduce the control signal within a range that the driving transistor is kept to on state. The voltage applied on the driving transistor exceeds a predetermined threshold voltage.

    Abstract translation: 在运算放大器中，差分放大电路被配置为放大从输入端输入的输入电压。 输出晶体管连接到输出端子。 驱动晶体管连接到差分放大电路和输出晶体管。 驱动晶体管根据从差分放大电路向驱动电路提供的控制信号导通。 驱动晶体管也被配置为根据控制信号来驱动输出晶体管。 当通过输出晶体管对驱动晶体管施加电压时，控制信号降低电路被配置为在驱动晶体管保持导通状态的范围内减少控制信号。 施加在驱动晶体管上的电压超过预定阈值电压。

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