オフセット補償を備えた増幅器
    5.
    发明专利
    オフセット補償を備えた増幅器 审中-公开
    具有偏移补偿功能的放大器

    公开(公告)号:JP2015154488A

    公开(公告)日:2015-08-24

    申请号:JP2015016725

    申请日:2015-01-30

    IPC分类号: H03F3/45 H03F3/34

    摘要: 【課題】オフセットを補償する増幅器を提供する。 【解決手段】圧力センサ及び/又は抵抗ブリッジ基本センサなどのセンサが発生する信号内の比較的大きなオフセットを補償する。オフセット補償は、センサ10が発生する信号のオフセットを補償するために、電圧モードデジタル/アナログ変換器(DAC)38などの構成可能な電圧基準が発生するオフセット補正信号を、計装用増幅器30に含まれる増幅器36の入力に与える。 【選択図】図1

    摘要翻译: 要解决的问题:提供用于补偿偏移的放大器。解决方案:放大器被配置为补偿由诸如压力传感器和/或电阻桥式基本传感器的传感器产生的信号中的相对大的偏移。 偏移补偿包括将诸如电压模式数/模转换器(DAC)38的可配置电压基准产生的偏移补偿信号提供给用于仪表的放大器30中包括的放大器36的输入,以便补偿 由传感器10产生的信号。

    Amplification device
    7.
    发明专利
    Amplification device 有权
    放大器件

    公开(公告)号:JP2013078051A

    公开(公告)日:2013-04-25

    申请号:JP2011217748

    申请日:2011-09-30

    IPC分类号: H03F3/08 H03F3/34 H03F3/45

    摘要: PROBLEM TO BE SOLVED: To provide an amplification device that implements a low input voltage and an improved characteristic.SOLUTION: The amplification device includes: first and second transimpedance amplifiers 21 for converting first and second current signals In(+), In(-) input from a pair of light receiving elements, respectively, to output first and second voltage signals Vo(-), Vo(+), respectively; a shunt circuit 24 for shunting each current of the first and second current signals In(+), In(-); an average value detection circuit for generating and outputting an average signal indicating an average voltage value of the first and second voltage signals Vo(-), Vo(+); and a control circuit 23 for controlling each current value of the first and second current signals In(+), In(-) shunted by the shunt circuit 24 on the basis of the average signal Vav and offset voltage values of the first and second voltage signals Vo(-), Vo(+).

    摘要翻译: 要解决的问题:提供一种实现低输入电压和改善特性的放大装置。 解决方案:放大装置包括:第一和第二跨阻放大器21,用于分别转换从一对光接收元件输入的第一和第二电流信号In(+),In( - ),以输出第一和第二电压信号 Vo( - ),Vo(+); 分流电路24,用于分流第一和第二电流信号In(+),In( - )中的每个电流; 平均值检测电路,用于产生和输出指示第一和第二电压信号Vo( - ),Vo(+)的平均电压值的平均信号; 以及控制电路23,用于基于分流电路24分流的第一和第二电流信号In(+),In( - )的电流值,基于平均信号Vav和第一和第二电压的偏移电压值 信号Vo( - ),Vo(+)。 版权所有(C)2013,JPO&INPIT

    Systems and methods to overcome dc offsets in amplifiers used to start resonant micro-electro mechanical systems
    9.
    发明专利
    Systems and methods to overcome dc offsets in amplifiers used to start resonant micro-electro mechanical systems 审中-公开
    用于启动共振微电子机械系统的放大器中的直流偏置的系统和方法

    公开(公告)号:JP2010151797A

    公开(公告)日:2010-07-08

    申请号:JP2009237331

    申请日:2009-10-14

    发明人: SUTTOR MICHAEL

    IPC分类号: G01C19/56 G01P9/04 H03B5/30

    摘要: PROBLEM TO BE SOLVED: To provide a method and system for assisting success in initialization of a resonance micro-electromechanical system (MEMS), especially, a method for overcoming DC offset caused by ESD. SOLUTION: A system 20 includes a resonance sensor 24, a drive device 26, and a charge amplifier and a voltage gain circuit 28. At the time of startup, the charge amplifier and voltage gain circuit receive a signal from the resonance sensor, and generates a clock signal for driving to compensate for the signal about DC offset. By using this, a resonance sensor in an operation mode of stable condition is realized by the system. The circuit includes a plurality of gain switches that are toggle-switched so as to generate glitches in the signal related to the received signal. The glitches compensate for the DC offset. If the signal related to the received signal exceeds a reference signal, a comparator generates a clock signal related to a drive device. COPYRIGHT: (C)2010,JPO&INPIT

    摘要翻译: 要解决的问题:提供一种用于辅助谐振微机电系统(MEMS)的初始化成功的方法和系统,特别是用于克服由ESD引起的DC偏移的方法。 解决方案:系统20包括谐振传感器24,驱动装置26以及电荷放大器和电压增益电路28.在启动时,电荷放大器和电压增益电路从谐振传感器接收信号 并且产生用于驱动的​​时钟信号以补偿关于DC偏移的信号。 通过使用该系统,可以实现稳定状态的运转模式的谐振传感器。 电路包括多个增益开关,其被触发切换以便在与接收信号相关的信号中产生毛刺。 毛刺补偿直流偏移。 如果与接收信号相关的信号超过参考信号,则比较器产生与驱动装置相关的时钟信号。 版权所有(C)2010,JPO&INPIT

    Gain control circuit
    10.
    发明专利
    Gain control circuit 审中-公开
    增益控制电路

    公开(公告)号:JP2008283661A

    公开(公告)日:2008-11-20

    申请号:JP2007213464

    申请日:2007-08-20

    IPC分类号: H03G3/30

    CPC分类号: H03F3/21 H03F2200/375

    摘要: PROBLEM TO BE SOLVED: To provide a gain control circuit that is not affected by DC offset, and can calculate the signal strength with high accuracy and adjust to targeted signal strength quickly and efficiently.
    SOLUTION: The gain control circuit includes: a power/energy calculation circuit 203 accumulating a first square value derived from square values of plural signal values in a time period; a DC offset power/energy calculation circuit 204 calculating a second square value that is a square value of a sum of the signal values in the time period, wherein the second square value is divided by a quantity of the signal values in the time period to generate a target offset value; and a DC offset cancel circuit 205, connected to the power/energy calculation circuit 203 and the DC offset power/energy calculation circuit 204, calculating a difference between the first square value and the target offset value.
    COPYRIGHT: (C)2009,JPO&INPIT

    摘要翻译: 要解决的问题:提供不受直流偏移影响的增益控制电路,可以高精度地计算信号强度并快速有效地调整到目标信号强度。 增益控制电路包括:功率/能量计算电路203,累积从时间段内的多个信号值的平方值导出的第一平方值; DC偏移功率/能量计算电路204,计算作为时间段内的信号值之和的平方值的第二平方值,其中第二平方值除以时间段内的信号值的量,以 生成目标偏移值; 以及连接到电力/能量计算电路203和DC偏移功率/能量计算电路204的DC偏移消除电路205,计算第一平方值和目标偏移值之间的差。 版权所有(C)2009,JPO&INPIT