中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

7 records (took 0.016 seconds)

    CONSTANT-CURRENT CIRCUIT AND SENSOR DEVICE HAVING THIS
    1.
    发明申请
    CONSTANT-CURRENT CIRCUIT AND SENSOR DEVICE HAVING THIS 审中-公开
    恒流电路和传感器装置

    公开(公告)号：US20160195890A1

    公开(公告)日：2016-07-07

    申请号：US14976946

    申请日：2015-12-21

    Applicant: ALPS ELECTRIC CO., LTD.

    Inventor： Akira Asao ,  Kiyoshi Sasai

    IPC: G05F3/26 ,  G01R17/00

    CPC classification number: G05F3/267

    Abstract: A first transistor and a second transistor form a current mirror circuit. A second current flowing in the second transistor is kept constant by a current control circuit. Therefore, a first current, to be output to a load, in the first transistor is kept at a constant value responsive to the second current in the second transistor. Since a drain voltage in the second transistor is controlled so as to become equal to a drain voltage in the first transistor, even if a voltage at an output terminal changes in response to a change in the impedance of the load, a ratio between the first current and the second current becomes substantially equal to a size ratio K between the first transistor and the second transistor. That is, the first current and second current precisely operate as a current mirror circuit.

    Abstract translation: 第一晶体管和第二晶体管形成电流镜电路。 流过第二晶体管的第二电流由电流控制电路保持恒定。 因此，响应于第二晶体管中的第二电流，要输出到第一晶体管中的负载的第一电流被保持在恒定值。 由于第二晶体管中的漏极电压被控制成等于第一晶体管中的漏极电压，所以即使输出端子上的电压响应于负载的阻抗的变化而改变，第一 电流和第二电流变得基本上等于第一晶体管和第二晶体管之间的尺寸比K。 也就是说，第一电流和第二电流精确地作为电流镜电路工作。

    Voltage selection circuit and semiconductor integrated circuit device having the same
    3.
    发明授权
    Voltage selection circuit and semiconductor integrated circuit device having the same 有权
    电压选择电路和具有该电压选择电路的半导体集成电路器件

    公开(公告)号：US09374074B2

    公开(公告)日：2016-06-21

    申请号：US14634464

    申请日：2015-02-27

    Applicant: ALPS ELECTRIC CO., LTD.

    Inventor： Junichi Saito ,  Akira Asao ,  Tomoyuki Sawataishi

    IPC: H03K5/1532

    CPC classification number: H03K5/1532

    Abstract: The highest voltage of a power supply voltage, a ground potential, and a signal voltage is output as a selection voltage from a terminal on the output side. In this case, terminals on the input side and the terminal on the output side are connected to each other through MOS transistors in the ON state. Therefore, it is possible to suppress a voltage drop due to a parasitic diode of each MOS transistor.

    Abstract translation: 从输出侧的端子输出电源电压，接地电位和信号电压的最高电压作为选择电压。 在这种情况下，输入侧的端子和输出侧的端子通过处于导通状态的MOS晶体管彼此连接。 因此，可以抑制由于每个MOS晶体管的寄生二极管引起的电压降。

    AMPLIFIER CIRCUIT
    5.
    发明申请
    AMPLIFIER CIRCUIT 有权
    放大器电路

    公开(公告)号：US20160190998A1

    公开(公告)日：2016-06-30

    申请号：US15065066

    申请日：2016-03-09

    Applicant: ALPS ELECTRIC CO., LTD.

    Inventor： Kiyoshi Sasai ,  Akira Asao

    IPC: H03F1/26 ,  H03F3/393 ,  H03F3/45

    CPC classification number: H03F1/26 ,  H03F3/393 ,  H03F3/45197 ,  H03F3/4565 ,  H03F3/45668 ,  H03F2200/171 ,  H03F2200/261 ,  H03F2200/381 ,  H03F2200/411 ,  H03F2200/555 ,  H03F2203/45116 ,  H03F2203/45188 ,  H03F2203/45358 ,  H03F2203/45652 ,  H03F2203/45674 ,  H03F2203/45682

    Abstract: A differential signal is input to a pair of gates of a differential pair, a differential signal generated by a load circuit connected to drains of the differential pair is amplified by a differential amplifier stage, and the amplified differential signal is fed back to a pair of sources of the differential pair via a feedback circuit. It is possible to maintain a high input impedance in the pair of gates of the differential pair while not being influenced by a gain of negative feedback of an amplifier circuit, and it is possible to perform amplification in an input stage by using a pair of a first transistor and a second transistor of the differential pair. Therefore, compared with the related art, it is possible to decrease the number of transistors in the input stage and to reduce a flicker noise.

    Abstract translation: 差分信号被输入到差分对的一对门，由连接到差分对的漏极的负载电路产生的差分信号由差分放大级放大，放大的差分信号被反馈到一对 通过反馈电路的差分对的源极。 可以在不受放大器电路的负反馈的增益的影响的同时在差分对的一对栅极中保持高的输入阻抗，并且可以通过使用一对 第一晶体管和第二晶体管。 因此，与现有技术相比，可以减少输入级中的晶体管数量并减少闪烁噪声。

    Protection circuit
    6.
    发明授权
    Protection circuit 有权
    保护电路

    公开(公告)号：US09001481B2

    公开(公告)日：2015-04-07

    申请号：US13906066

    申请日：2013-05-30

    Applicant: Alps Electric Co., Ltd.

    Inventor： Tomoyuki Sawataishi ,  Akihisa Iikura ,  Kimihiro Nakao ,  Akira Asao

    IPC: H02H3/38 ,  H02H3/00 ,  H03K19/003

    CPC classification number: H02H3/003 ,  H03K19/00315

    Abstract: A protection circuit includes a power supply terminal, a ground terminal, a control unit connected to the power supply terminal and the ground terminal, and a supply unit connected to the power supply terminal and the ground terminal, for preventing application of voltage in a reverse direction to a circuit unit having a predetermined function. In this case, the control unit generates a control potential, which controls the control unit and the supply unit in accordance with a potential supplied from the power supply terminal and a potential supplied from the ground terminal. The supply unit is configured to be capable of supplying current to a circuit unit connected to a subsequent stage on the basis of a potential supplied from the power supply terminal, a potential supplied from the ground terminal, and the control potential generated by the control unit.

    Abstract translation: 保护电路包括电源端子，接地端子，连接到电源端子和接地端子的控制单元以及连接到电源端子和接地端子的供电单元，用于防止逆向施加电压 方向到具有预定功能的电路单元。 在这种情况下，控制单元产生控制电位，其根据从电源端子提供的电位和从接地端子提供的电位来控制控制单元和供电单元。 供电单元被配置为能够基于从电源端子提供的电位，从接地端子提供的电位和由控制单元产生的控制电位向连接到后级的电路单元提供电流 。

    PROTECTION CIRCUIT
    7.
    发明申请
    PROTECTION CIRCUIT 有权
    保护电路

    公开(公告)号：US20140002936A1

    公开(公告)日：2014-01-02

    申请号：US13906066

    申请日：2013-05-30

    Applicant: ALPS ELECTRIC CO., LTD.

    Inventor： Tomoyuki Sawataishi ,  Akihisa likura ,  Kimihiro Nakao ,  Akira Asao

    IPC: H02H3/00

    CPC classification number: H02H3/003 ,  H03K19/00315

    Abstract: A protection circuit includes a power supply terminal, a ground terminal, a control unit connected to the power supply terminal and the ground terminal, and a supply unit connected to the power supply terminal and the ground terminal, for preventing application of voltage in a reverse direction to a circuit unit having a predetermined function. In this case, the control unit generates a control potential, which controls the control unit and the supply unit in accordance with a potential supplied from the power supply terminal and a potential supplied from the ground terminal. The supply unit is configured to be capable of supplying current to a circuit unit connected to a subsequent stage on the basis of a potential supplied from the power supply terminal, a potential supplied from the ground terminal, and the control potential generated by the control unit.

    Abstract translation: 保护电路包括电源端子，接地端子，连接到电源端子和接地端子的控制单元以及连接到电源端子和接地端子的供电单元，用于防止逆向施加电压 方向到具有预定功能的电路单元。 在这种情况下，控制单元产生控制电位，其根据从电源端子提供的电位和从接地端子提供的电位来控制控制单元和供电单元。 供电单元被配置为能够基于从电源端子提供的电位，从接地端子提供的电位和由控制单元产生的控制电位向连接到后级的电路单元提供电流 。

Patent Agency Ranking