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129 条记录 (耗时 0.02 秒)

    Fixed gain amplifier circuit
    6.
    发明授权
    Fixed gain amplifier circuit 有权
    固定增益放大电路

    公开(公告)号：US09246458B2

    公开(公告)日：2016-01-26

    申请号：US14296914

    申请日：2014-06-05

    申请人： STMicroelectronics, Inc.

    发明人： Davy Choi

    IPC分类号： H03G1/00 ,  H03F3/45 ,  H03F1/02

    CPC分类号： H03G3/02 ,  H03F1/0205 ,  H03F1/26 ,  H03F3/3022 ,  H03F3/393 ,  H03F3/45 ,  H03F3/45094 ,  H03F3/45179 ,  H03F3/45475 ,  H03F2200/261 ,  H03F2203/45116 ,  H03F2203/45138 ,  H03F2203/45336 ,  H03G1/0035 ,  H03G1/02 ,  H03G3/3036 ,  H03M1/18

    摘要： An instrumentation amplifier includes first and second resistors for gain setting. The operational amplifiers within the instrumentation amplifier include selectively enabled current drive sources coupled to the amplifier output. The first and second resistors have variable resistances. A control circuit is configured to select the variable resistances of the first and second resistors to implement a fixed gain for the instrumentation amplifier and further selectively enable the current drive sources. The control circuit receives an indication of a downstream programmable gain (for example, from a downstream programmable gain amplifier). The variable resistances of the first and second resistors are selected to be scaled inversely with respect to the downstream programmable gain and the current drive sources are enabled proportionately with respect to the downstream programmable gain.

    摘要翻译： 仪表放大器包括用于增益设定的第一和第二电阻器。 仪表放大器内的运算放大器包括耦合到放大器输出的有选择地使能的电流驱动源。 第一和第二电阻具有可变电阻。 控制电路被配置为选择第一和第二电阻器的可变电阻以实现仪器放大器的固定增益，并且进一步选择性地启用当前的驱动源。 控制电路接收下游可编程增益的指示（例如，从下游可编程增益放大器）。 第一和第二电阻器的可变电阻被选择为相对于下游可编程增益反相缩放，并且当前驱动源相对于下游可编程增益成比例地启用。

    Low voltage differential signal driver with reduced power consumption
    7.
    发明授权
    Low voltage differential signal driver with reduced power consumption 有权
    低电压差分信号驱动器，降低功耗

    公开(公告)号：US08638125B2

    公开(公告)日：2014-01-28

    申请号：US13159672

    申请日：2011-06-14

    申请人： Khaldoon Abugharbieh ,  Jitendra Mohan ,  Ivan Duzevik

    发明人： Khaldoon Abugharbieh ,  Jitendra Mohan ,  Ivan Duzevik

    IPC分类号： H03K5/22

    CPC分类号： H03F3/45475 ,  H03F3/45094

    摘要： A low voltage differential signal (LVDS) driver circuit with reduced power consumption. A pre-driver stage, implemented as a differential current mode amplifier, is driven by the differential input signal and provides a corresponding differential drive signal, which drives the output stage, implemented as a differential voltage mode amplifier, which, in turn, provides the differential output signal for the load. Total current consumption equals the load current, which is provided by the output stage, plus a much smaller current used by the pre-driver stage.

    摘要翻译： 低电压差分信号（LVDS）驱动电路，功耗降低。 实现为差分电流模式放大器的预驱动器级由差分输入信号驱动，并提供驱动输出级的相应的差分驱动信号，该差分驱动信号被实现为差分电压模式放大器，其反过来提供 负载的差分输出信号。 总电流消耗等于由输出级提供的负载电流，加上预驱动级使用的电流要小得多。

    OUTPUT DISTORTION CANCELLATION CIRCUIT
    9.
    发明申请
    OUTPUT DISTORTION CANCELLATION CIRCUIT 有权
    输出失真消除电路

    公开(公告)号：US20090256634A1

    公开(公告)日：2009-10-15

    申请号：US12103153

    申请日：2008-04-15

    申请人： Moshe Gerstenhaber ,  James Bundock

    发明人： Moshe Gerstenhaber ,  James Bundock

    IPC分类号： H03F3/45 ,  H03G3/12

    CPC分类号： H03F1/3211 ,  H03F3/3071 ,  H03F3/45085 ,  H03F3/45094 ,  H03F2203/30078 ,  H03F2203/30111 ,  H03F2203/45392 ,  H03F2203/45702 ,  H03F2203/45722

    摘要： An output distortion circuit includes a first transistor arrangement receiving a nonlinear current associated with a nonlinear differential error signal. The first transistor arrangement produces a reflected base current that is applied to one side of a differential input pair. A second transistor arrangement eliminates the nonlinear differential error signal by producing a replicated base current that replicates the reflected base current. The replicated base current is applied to an opposite side of the differential input pair thus the output distortion cancellation circuit creating a deflection of approximately equal magnitude to the reflected base current so as to eliminate the nonlinear differential error signal.

    摘要翻译： 输出失真电路包括接收与非线性差分误差信号相关联的非线性电流的第一晶体管装置。 第一晶体管布置产生施加到差分输入对的一侧的反射基极电流。 第二晶体管布置通过产生复制反射的基极电流的复制的基极电流来消除非线性微分误差信号。 复制的基极电流被施加到差分输入对的相对侧，因此输出失真消除电路产生与反射的基极电流大致相等的偏转，以消除非线性微分误差信号。

    Balanced differential cross-coupled transconductance amplifier for a multiplexor
    10.
    发明授权
    Balanced differential cross-coupled transconductance amplifier for a multiplexor 有权
    用于多路复用器的平衡差分交叉耦合跨导放大器

    公开(公告)号：US07583146B2

    公开(公告)日：2009-09-01

    申请号：US11818739

    申请日：2007-06-15

    申请人： Kimo Y. F. Tam ,  Kenneth A. Lawas

    发明人： Kimo Y. F. Tam ,  Kenneth A. Lawas

    IPC分类号： H03F3/45

    CPC分类号： H03F3/4508 ,  H03F3/45094 ,  H03F3/45484 ,  H03F3/68 ,  H03F2203/45291 ,  H03F2203/45318

    摘要： A balanced, differential, cross-coupled amplifier including an input stage for receiving a differential input and including an input transconductance differential pair and a feedback transconductance differential pair; and an output stage responsive to the input stage for providing a differential output; the differential input being connected to one input of the input transconductance differential pair and one input of the feedback transconductance differential pair, the differential output being fed back to one input of the input transconductance differential pair and one input of the feedback transconductance differential pair for balancing the currents in the transconductance differential pairs over the input range.

    摘要翻译： 一种平衡的差分交叉耦合放大器，包括用于接收差分输入并包括输入跨导差分对和反馈跨导差分对的输入级; 以及响应于输入级的输出级，用于提供差分输出; 差分输入连接到输入跨导差分对的一个输入和反馈跨导差分对的一个输入，差分输出反馈到输入跨导差分对的一个输入和用于平衡的反馈跨导差分对的一个输入 输入范围内的跨导差分对中的电流。