Dynamic biasing circuit for semiconductor device
    1.
    发明授权
    Dynamic biasing circuit for semiconductor device 失效
    半导体器件的动态偏置电路

    公开(公告)号:US5467050A

    公开(公告)日:1995-11-14

    申请号:US177811

    申请日:1994-01-04

    CPC分类号: G05F3/205 H03K17/0822

    摘要: A dynamic biasing circuit is disclosed that includes a blocking current source (20) having a first current path connected to a first node (NODE 1) and a second current path connected to a second node (NODE 3). A linear source follower (22) has a first current path connected to the second node (NODE 3), a second current path connected to a voltage reference (24), and an input connected to the first node (NODE 1). A parasitic capacitor (26) is connected to the first node (NODE 1) and to ground potential, and a parasitic capacitor (28) is connected to the second node (NODE 3) and to ground potential.

    摘要翻译: 公开了一种动态偏置电路,其包括具有连接到第一节点(NODE 1)的第一电流路径和连接到第二节点(NODE 3)的第二电流路径)的阻塞电流源(20)。 线性源极跟随器(22)具有连接到第二节点(NODE 3)的第一电流路径,连接到电压基准(24)的第二电流路径和连接到第一节点(NODE 1)的输入)。 寄生电容器(26)连接到第一节点(NODE 1)和接地电位,寄生电容器(28)连接到第二节点(NODE 3)和接地电位。

    Cascoded current mirror circuit
    2.
    发明授权
    Cascoded current mirror circuit 有权
    Cascoded电流镜电路

    公开(公告)号:US06339319B1

    公开(公告)日:2002-01-15

    申请号:US09628545

    申请日:2000-07-28

    IPC分类号: G05F316

    CPC分类号: G05F3/265

    摘要: An emitter or source follower is added to a current mirror and, more particularly, to a cascoded current mirror that uses beta helpers to reduce the mirror error due to base currents for restoring a Vbe of voltage compliance to the cascoded current mirror, thus allowing the use of a cascoded current mirror in applications where it could not otherwise be used due to voltage compliance problems.

    摘要翻译: 发射极或源极跟随器被添加到电流反射镜中,更具体地说,涉及使用β帮助器的级联电流镜,以减少由于基极电流引起的反射镜误差,以恢复对级联电流镜的电压依从性,从而允许 在由于电压一致性问题而无法使用的应用中使用共源电流镜。

    Apparatus and method for extending the breakdown capability of a
switching circuit
    3.
    发明授权
    Apparatus and method for extending the breakdown capability of a switching circuit 失效
    用于延长开关电路的击穿能力的装置和方法

    公开(公告)号:US5412531A

    公开(公告)日:1995-05-02

    申请号:US843

    申请日:1993-01-05

    摘要: A circuit (16) having an extended breakdown capability is provided for switching an inductive load driver (12). The circuit (16) includes a first switch (18) for providing a first drive voltage when the first switch (18) is closed. A second switch (20) is provided for receiving the first drive voltage from the first switch (18) and delivering the first drive voltage to the inductive load driver (12) when the second switch (20) is closed. The second switch (20) limits the voltage across the first switch (18) to a predetermined level when the first switch (18) is open. A third switch (22) provides a second drive voltage to the inductive load driver (12) when the third switch (22) is closed.

    摘要翻译: 提供具有扩展击穿能力的电路(16),用于切换感性负载驱动器(12)。 电路(16)包括用于当第一开关(18)关闭时提供第一驱动电压的第一开关(18)。 提供第二开关(20),用于在第二开关(20)闭合时从第一开关(18)接收第一驱动电压并将第一驱动电压传送到感性负载驱动器(12)。 当第一开关(18)打开时,第二开关(20)将跨越第一开关(18)的电压限制到预定水平。 当第三开关(22)关闭时,第三开关(22)向感性负载驱动器(12)提供第二驱动电压。

    Current limiter for magneto-resistive circuit element
    4.
    发明授权
    Current limiter for magneto-resistive circuit element 失效
    用于磁阻电路元件的限流器

    公开(公告)号:US06847513B2

    公开(公告)日:2005-01-25

    申请号:US09747924

    申请日:2000-12-27

    摘要: A current limiter circuit for limiting current in an electrical circuit element such as the magneto-resistive portion of a read head forming a portion of a hard disk drive and including: a first circuit connected to one end of the circuit element for applying a bias current of a desired value to the circuit element in response to the value to an input signal; a second circuit connected to the other end of the circuit element for setting the amplitude of the voltage signal generated across the circuit element in response to the bias current; and a third electrical circuit connected to both the first and second circuits for limiting the value of bias current to a predetermined level for an abnormal event such as a current surge, a short circuit, or any other type of undesired current operating condition.

    摘要翻译: 一种用于限制诸如形成硬盘驱动器的一部分的读取头的电磁部分的电路元件中的电流的电流限制器电路,包括:连接到电路元件的一端的第一电路,用于施加偏置电流 响应于输入信号的值,向所述电路元件提供期望值; 连接到所述电路元件的另一端的第二电路,用于响应于所述偏置电流设置在所述电路元件上产生的电压信号的幅度; 以及连接到第一和第二电路两者的第三电路,用于将偏置电流的值限制在诸如电流浪涌,短路或任何其它类型的不期望的电流操作条件的异常事件的预定电平。

    Method and apparatus for high voltage level shifting
    5.
    发明授权
    Method and apparatus for high voltage level shifting 失效
    高压电平转换的方法和装置

    公开(公告)号:US5539334A

    公开(公告)日:1996-07-23

    申请号:US991622

    申请日:1992-12-16

    摘要: A voltage level shifter circuit (10) for outputting an output high (18) and output low (18) signal is provided which accommodates multiple power supplies (12 and 22) at different relative voltage to each other. The voltage level shifter (10) includes an input stage (24) which is characterized by voltage ranges applicable to the process used to make the circuit. The voltage level shifter circuit includes an output stage (18) which is also characterized by the same voltage ranges which cannot be exceeded. The output stage outputs the translated output high (16) and output low (18) voltage signals. A clamping network (20) is employed to ensure that the output stage voltage ranges are not exceeded. The present invention implements a high voltage level shifter (10) using low voltage components by extending the breakdown capability of the voltage level shifter circuit (10) past the breakdown voltage of any single component in the circuit.

    摘要翻译: 提供了用于输出高输出(18)和输出低(18)信号的电压电平移位器电路(10),其以彼此不同的相对电压容纳多个电源(12和22)。 电压电平转换器(10)包括输入级(24),其特征在于适用于用于制造电路的工艺的电压范围。 电压电平移位电路包括输出级(18),其特征还在于不能超过相同的电压范围。 输出级输出转换输出高电平(16)和输出低电平(18)电压信号。 采用夹紧网络(20)来确保不超过输出级电压范围。 本发明通过将电压电平移位器电路(10)的击穿能力延伸超过电路中任何单个部件的击穿电压来实现使用低电压分量的高电压电平转换器(10)。