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113 条记录 (耗时 0.051 秒)

    Amplifier circuit and a/d converter
    7.
    发明专利
    Amplifier circuit and a/d converter 审中-公开
    放大器电路和A / D转换器

    公开(公告)号：JP2010147992A

    公开(公告)日：2010-07-01

    申请号：JP2008325466

    申请日：2008-12-22

    申请人： Toshiba Corp ,  株式会社東芝

    发明人： NOZAWA MAI ,  FURUTA MASANORI

    IPC分类号： H03F1/22 ,  H03F3/45 ,  H03M1/44

    CPC分类号： H03F1/223 ,  H03F3/45183 ,  H03F3/45192 ,  H03F3/45475 ,  H03F3/45735 ,  H03F2200/249 ,  H03F2200/405 ,  H03F2200/414 ,  H03F2200/78 ,  H03F2203/45292 ,  H03F2203/45302 ,  H03F2203/45356 ,  H03F2203/45396 ,  H03F2203/45424 ,  H03F2203/45446 ,  H03F2203/45536 ,  H03F2203/45544 ,  H03F2203/45551 ,  H03F2203/45616 ,  H03F2203/45726 ,  H03F2203/45728 ,  H03M1/002 ,  H03M1/0682 ,  H03M1/164

    摘要： PROBLEM TO BE SOLVED: To reduce a starting time and suppress an increase of electric power consumption.
    SOLUTION: The amplifier circuit includes a current source 101 which is connected between a power-supply voltage Vdd and an output node Vy and goes on when a switching control signal has a first value or goes off when it has a second value, a grounded voltage control current source 104 for which an amount of current is controlled by an input voltage Vin, a cascode transistor 102 connected between the voltage control current source and the output node, a boost amplifier 103 connected between a gate electrode and a source electrode of the cascode transistor, and a switch SW13 which is connected between an output node of the boost amplifier and a bias voltage Vb and goes on for a predetermined time period along with a change of the value of the switching control signal from the second value to the first value to force the boost amplifier to start up.
    COPYRIGHT: (C)2010,JPO&INPIT

    摘要翻译： 要解决的问题：为了减少启动时间并抑制电力消耗的增加。 解决方案：放大器电路包括连接在电源电压Vdd和输出节点Vy之间的电流源101，当切换控制信号具有第一值或当其具有第二值时，其断开， 接地电压控制电流源104，其电流量由输入电压Vin，连接在电压控制电流源和输出节点之间的共源共栅晶体管102，连接在栅电极和源极之间的升压放大器103 并且连接在升压放大器的输出节点和偏置电压Vb之间的开关SW13，并且随着开关控制信号的值从第二值的变化而变化到预定时间段 第一个值强制升压放大器启动。 版权所有（C）2010，JPO＆INPIT

    Operational amplifier circuit and driving method of the operational amplifier circuit
    9.
    发明专利
    Operational amplifier circuit and driving method of the operational amplifier circuit 有权
    操作放大器电路的运行放大器电路和驱动方法

    公开(公告)号：JP2009201044A

    公开(公告)日：2009-09-03

    申请号：JP2008043169

    申请日：2008-02-25

    申请人： Oki Micro Design Co Ltd ,  Oki Semiconductor Co Ltd ,  Okiセミコンダクタ株式会社 ,  株式会社 沖マイクロデザイン

    发明人： KUROKI RYUTA

    IPC分类号： H03F3/45

    CPC分类号： H03F3/45183 ,  H03F3/45475 ,  H03F3/72 ,  H03F2200/297 ,  H03F2203/45726 ,  H03F2203/45728

    摘要： PROBLEM TO BE SOLVED: To provide an operational amplifier circuit speeding up operations for getting a steady state after canceling power-down state, and also to provide a control method of the operational amplifier circuit in a CMOS operational amplifier circuit.
    SOLUTION: In a power-down state, applying a voltage VDD2 to a node N1 by a SW1 and outputting the voltage VDD2 from an output terminal OUT1, results in a difference in the electrical potentials at both electrodes of a phase compensation capacitor C1, to accumulate electric charges. When the power-down state changes to the steady state, the accumulated electric charges are discharged, and gates of an N-channel MOS transistor TN3 are turned ON, resulting in an instant reduction of an output value of an output terminal OUT2 to get the steady state.
    COPYRIGHT: (C)2009,JPO&INPIT

    摘要翻译： 要解决的问题：提供一种运行放大器电路在取消掉电状态之后加速操作以获得稳定状态，并且还提供CMOS运算放大器电路中的运算放大器电路的控制方法。 解决方案：在掉电状态下，通过SW1向节点N1施加电压VDD2，并从输出端子OUT1输出电压VDD2，导致相位补偿电容器的两个电极的电位差 C1，累积电费。 当掉电状态变为稳定状态时，累积的电荷被放电，并且N沟道MOS晶体管TN3的栅极导通，导致输出端子OUT2的输出值的瞬间减小以获得 稳定状态。 版权所有（C）2009，JPO＆INPIT