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    Magnetic Field Sensor Integrated Circuit with Integral Ferromagnetic Material
    2.
    发明申请
    Magnetic Field Sensor Integrated Circuit with Integral Ferromagnetic Material 审中-公开
    具有积分铁磁材料的磁场传感器集成电路

    公开(公告)号：US20130249544A1

    公开(公告)日：2013-09-26

    申请号：US13424618

    申请日：2012-03-20

    申请人： Ravi Vig ,  William P. Taylor ,  Andreas P. Friedrich ,  Paul David ,  Marie-Adelaide Lo ,  Eric Burdette ,  Eric Shoemaker ,  Michael C. Doogue

    发明人： Ravi Vig ,  William P. Taylor ,  Andreas P. Friedrich ,  Paul David ,  Marie-Adelaide Lo ,  Eric Burdette ,  Eric Shoemaker ,  Michael C. Doogue

    IPC分类号： G01R33/02

    CPC分类号： G01R33/0047 ,  G01B7/30 ,  G01R33/0011

    摘要： A magnetic field sensor includes a lead frame, a semiconductor die supporting a magnetic field sensing element, a non-conductive mold material enclosing the die and a portion of the lead frame, a ferromagnetic mold material secured to the non-conductive mold material and a securing mechanism to securely engage the mold materials. The ferromagnetic mold material may comprise a soft ferromagnetic material to form a concentrator or a hard ferromagnetic material to form a bias magnet. The ferromagnetic mold material may be tapered and includes a non-contiguous central region, as may be an aperture or may contain the non-conductive mold material or an overmold material. Further embodiments include die up, lead on chip, and flip-chip arrangements, wafer level techniques to form the concentrator or bias magnet, integrated components, such as capacitors, on the lead frame, and a bias magnet with one or more channels to facilitate overmolding.

    摘要翻译： 磁场传感器包括引线框架，支撑磁场感测元件的半导体管芯，封装模具的非导电模具材料和引线框架的一部分，固定到非导电模具材料的铁磁模具材料和 固定机构可牢固地接合模具材料。 铁磁模具材料可以包括软铁磁材料以形成集中器或硬铁磁材料以形成偏置磁体。 铁磁模具材料可以是锥形的并且包括不连续的中心区域，可以是孔或可以包含非导电模具材料或包覆模制材料。 另外的实施例包括裸片，片上芯片和倒装芯片布置，用于形成集中器或偏置磁体的晶片级技术，引线框架上的诸如电容器之类的集成部件，以及具有一个或多个通道的偏置磁体，以便于 包覆成型

    Low power magnetic field sensor
    5.
    发明授权
    Low power magnetic field sensor 有权
    低功率磁场传感器

    公开(公告)号：US08008908B2

    公开(公告)日：2011-08-30

    申请号：US11767549

    申请日：2007-06-25

    申请人： Michael C. Doogue ,  Shaun D. Milano ,  Paul David

    发明人： Michael C. Doogue ,  Shaun D. Milano ,  Paul David

    IPC分类号： G01P3/42

    CPC分类号： G01D5/145 ,  G01P3/487 ,  G01P13/00 ,  G01P13/04 ,  G01P13/045

    摘要： A magnetic field sensor for low power applications includes a magnetic field sensing element that, during sample intervals, provides a signal proportional to a sensed magnetic field and also includes a comparator circuit that, during the sample intervals, compares the magnetic field signal to threshold levels to generate a sensor output signal indicative of a strength of the magnetic field. According to a dual sample rate feature, initially the magnetic field signal is sampled at a first predetermined sample rate and, following detection of a transition of the sensor output signal, is sampled at a second, faster predetermined sample rate for a predetermined interval. According to a user-programmable sample rate feature, a user may select to operate the sensor at a fixed, predetermined sample rate or at a user-specified sample rate. The magnetic field sensor may also or alternatively detect the speed and/or direction of rotation of a rotating magnetic article.

    摘要翻译： 用于低功率应用的磁场传感器包括磁场感测元件，其在采样间隔期间提供与感测磁场成比例的信号，并且还包括比较器电路，其在采样间隔期间将磁场信号与阈值电平进行比较 以产生表示磁场强度的传感器输出信号。 根据双采样率特征，首先以第一预定采样速率对磁场信号进行采样，并且在检测到传感器输出信号的转变之后，以预定间隔以第二更快的预定采样速率采样。 根据用户可编程的采样率特征，用户可以选择以固定的，预定的采样率或以用户指定的采样率来操作传感器。 磁场传感器还可以或者替代地检测旋转磁性制品的转速和/或旋转方向。

    LOW POWER MAGNETIC FIELD SENSOR
    6.
    发明申请
    LOW POWER MAGNETIC FIELD SENSOR 有权
    低功率磁场传感器

    公开(公告)号：US20080315865A1

    公开(公告)日：2008-12-25

    申请号：US11767549

    申请日：2007-06-25

    申请人： Michael C. Doogue ,  Shaun D. Milano ,  Paul David

    发明人： Michael C. Doogue ,  Shaun D. Milano ,  Paul David

    IPC分类号： G01P3/48

    CPC分类号： G01D5/145 ,  G01P3/487 ,  G01P13/00 ,  G01P13/04 ,  G01P13/045

    摘要： A magnetic field sensor for low power applications includes a magnetic field sensing element that, during sample intervals, provides a signal proportional to a sensed magnetic field and also includes a comparator circuit that, during the sample intervals, compares the magnetic field signal to threshold levels to generate a sensor output signal indicative of a strength of the magnetic field. According to a dual sample rate feature, initially the magnetic field signal is sampled at a first predetermined sample rate and, following detection of a transition of the sensor output signal, is sampled at a second, faster predetermined sample rate for a predetermined interval. According to a user-programmable sample rate feature, a user may select to operate the sensor at a fixed, predetermined sample rate or at a user-specified sample rate. The magnetic field sensor may also or alternatively detect the speed and/or direction of rotation of a rotating magnetic article.

    摘要翻译： 用于低功率应用的磁场传感器包括磁场感测元件，其在采样间隔期间提供与感测磁场成比例的信号，并且还包括比较器电路，其在采样间隔期间将磁场信号与阈值电平进行比较 以产生表示磁场强度的传感器输出信号。 根据双采样率特征，首先以第一预定采样速率对磁场信号进行采样，并且在检测到传感器输出信号的转变之后，以预定间隔以第二更快的预定采样速率采样。 根据用户可编程的采样率特征，用户可以选择以固定的，预定的采样率或以用户指定的采样率来操作传感器。 磁场传感器还可以或者替代地检测旋转磁性制品的转速和/或旋转方向。