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    SYSTEM AND METHOD TO DIRECTLY COUPLE TO ANALOG TO DIGITAL CONVERTER HAVING LOWER VOLTAGE REFERENCE
    44.
    发明公开
    SYSTEM AND METHOD TO DIRECTLY COUPLE TO ANALOG TO DIGITAL CONVERTER HAVING LOWER VOLTAGE REFERENCE 有权
    系统和方法直接耦合模拟数字转换器具有较低的电压基准

    公开(公告)号：EP3229372A1

    公开(公告)日：2017-10-11

    申请号：EP16305396.0

    申请日：2016-04-06

    Applicant: NXP USA, Inc.

    Inventor： PAVAO-MOREIRA, Cristian ,  HALES, Rex Kenton

    IPC: H03G3/30 ,  H03M1/06

    CPC classification number: H03G3/3036 ,  G01S13/0209 ,  H03F3/19 ,  H03F3/45094 ,  H03F3/72 ,  H03F2200/384 ,  H03F2200/411 ,  H03F2200/456 ,  H03F2200/69 ,  H03F2203/45061 ,  H03F2203/45081 ,  H03F2203/45112 ,  H03F2203/7221 ,  H03G3/3052 ,  H03G2201/302 ,  H03G2201/40 ,  H03K19/018585

    Abstract: A device includes a variable gain amplifier, a voltage shifter, a variable gain amplifier half replica module, and an analog to digital converter. The variable gain amplifier includes an input terminal to receive an input signal, an output terminal to provide a first output signal that is biased based on a first common-mode voltage reference. The voltage shifter circuit includes first and second input terminals, and an output terminal to provide, to the analog to digital converter, a third output signal that is biased based on a second common-mode voltage reference. The variable gain amplifier half replica module includes an output terminal coupled to the second input terminal of the voltage shifter circuit, the variable gain amplifier half replica module to control the third output signal of the voltage shifter circuit based on the first common-mode voltage reference and the second common-mode voltage reference.

    Abstract translation: 一种装置包括可变增益放大器，电压移位器，可变增益放大器半复制模块和模数转换器。 可变增益放大器包括用于接收输入信号的输入端子，用于提供基于第一共模电压基准偏置的第一输出信号的输出端子。 电压移位器电路包括第一和第二输入端子以及用于向模数转换器提供基于第二共模电压基准偏置的第三输出信号的输出端子。 可变增益放大器半副本模块包括耦合到电压移位器电路的第二输入端子的输出端子，可变增益放大器半副本模块基于第一共模电压基准来控制电压移位器电路的第三输出信号 和第二共模电压基准。

    Feedforward automatic gain correction
    46.
    发明公开
    Feedforward automatic gain correction 有权
    自动化Vorwärtsverstärkungskorrektur

    公开(公告)号：EP2458733A1

    公开(公告)日：2012-05-30

    申请号：EP10192397.7

    申请日：2010-11-24

    Applicant: NXP B.V.

    Inventor： Pierick, Henk Ten ,  Hulze, Gertjan Groot ,  Keukens, Erik

    IPC: H03G3/30

    CPC classification number: H03G3/3052 ,  H03G3/301 ,  H03G2201/202 ,  H03G2201/302 ,  H03G2201/606

    Abstract: An automatic gain control circuit is provided for an input signal in the form of a dc reference level and a superposed amplitude modulated ac data signal. A feedforward AGC loop has a low pass filter (41) for deriving the level of attenuation from the attenuated dc reference level. A multiplier value (G) is based on the reciprocal of the level of attenuation (α) and this multiplier enables an output signal to be generated comprising a constant multiple (DG) of the input signal.

    Abstract translation: 为直流参考电平和重叠幅度调制交流数据信号形式的输入信号提供自动增益控制电路。 前馈AGC环路具有用于从衰减的直流参考电平导出衰减电平的低通滤波器（41）。 乘数值（G）基于衰减电平（±）的倒数，并且该乘法器使得能够产生包括输入信号的恒定倍数（DG）的输出信号。

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