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1. 发明申请

WO2009108422A2 MAGNETIC FIELD SENSOR WITH AUTOMATIC SENSITIVITY ADJUSTMENT 审中-公开
标题翻译：具有自动灵敏度调整的磁场传感器
公开(公告)号：WO2009108422A2
公开(公告)日：2009-09-03
申请号：PCT/US2009/031776
申请日：2009-01-23
申请人： ALLEGRO MICROSYSTEMS, INC. , DOOGUE, Michael, C. , MONREAL, Gerardo , TAYLOR, William, P.
发明人： DOOGUE, Michael, C. , MONREAL, Gerardo , TAYLOR, William, P.
IPC分类号： G01R35/00
CPC分类号： G01R33/07 , G01R33/0023 , G01R33/0041
摘要： Magnetic field sensors have a magnetic field sensing element and also a feedback circuit to provide a gain-adjustment signal to affect a sensitivity associated with the magnetic field sensing element. In some arrangements, the feedback circuit can include piezoresistors to sense a strain of a substrate over which the magnetic field sensor is disposed. With these arrangements, the feedback circuit can generate the gain-adjustment signal in accordance with the sensed strain. In other arrangements, the feedback circuit can generate pulsed magnetic fields proximate to the magnetic field sensing element in order to directly measure the sensitivity of the magnetic field sensing element. With these arrangements, the feedback circuit can generate the gain-adjustment signal in accordance with the sensed sensitivity.
摘要翻译：磁场传感器具有磁场感测元件以及反馈电路，以提供增益调节信号以影响与磁场感测元件相关联的灵敏度。在一些布置中，反馈电路可以包括压敏电阻器，用于感测设置有磁场传感器的基板的应变。利用这些布置，反馈电路可以根据感测的应变产生增益调整信号。在其他布置中，反馈电路可以产生靠近磁场感测元件的脉冲磁场，以便直接测量磁场感测元件的灵敏度。利用这些布置，反馈电路可以根据所感测的灵敏度产生增益调整信号。

2. 发明申请

WO2011011479A1 CIRCUITS AND METHODS FOR GENERATING A DIAGNOSTIC MODE OF OPERATION IN A MAGNETIC FIELD SENSOR 审中-公开
标题翻译：在磁场传感器中产生诊断操作模式的电路和方法
公开(公告)号：WO2011011479A1
公开(公告)日：2011-01-27
申请号：PCT/US2010/042694
申请日：2010-07-21
申请人： ALLEGRO MICROSYSTEMS, INC. , CESARETTI, Juan, Manuel , MONREAL, Gerardo , TAYLOR, William, P. , DOOGUE, Michael, C.
发明人： CESARETTI, Juan, Manuel , MONREAL, Gerardo , TAYLOR, William, P. , DOOGUE, Michael, C.
IPC分类号： G01R33/00
CPC分类号： G01R35/005 , G01R33/0035
摘要： A magnetic field sensor includes a diagnostic circuit that allows a self-test of most of, or all of, the circuitry of the magnetic field sensor, including a self-test of a magnetic field sensing element used within the magnetic field sensor. The magnetic field sensor can generate a diagnostic magnetic field to which the magnetic field sensor is responsive.
摘要翻译：磁场传感器包括诊断电路，其允许对磁场传感器的电路的大部分或全部进行自检，包括在磁场传感器内使用的磁场感测元件的自检。磁场传感器可以产生磁场传感器响应的诊断磁场。

3. 发明申请

WO2012148646A1 CIRCUITS AND METHODS FOR SELF-CALIBRATING OR SELF-TESTING A MAGNETIC FIELD SENSOR 审中-公开
标题翻译：用于自动校准或自检磁场传感器的电路和方法
公开(公告)号：WO2012148646A1
公开(公告)日：2012-11-01
申请号：PCT/US2012/032315
申请日：2012-04-05
申请人： ALLEGRO MICROSYSTEMS, INC. , CESARETTI, Juan Manuel , MONREAL, Gerardo
发明人： CESARETTI, Juan Manuel , MONREAL, Gerardo
IPC分类号： G01R33/00
CPC分类号： G01R33/0017 , G01R33/0035
摘要： A magnetic field sensor includes a reference-field-sensing circuit channel that allows a calibration or a self-test of the circuitry of the magnetic field sensor. The magnetic field sensor can generate a reference magnetic field to which the magnetic field sensor is responsive.
摘要翻译：磁场传感器包括参考场感测电路通道，其允许磁场传感器的电路的校准或自检。磁场传感器可以产生磁场传感器响应的参考磁场。

4. 发明申请

WO2010082976A1 DETERMINING ADDRESSES OF ELECTRICAL COMPONENTS ARRANGED IN A DAISY CHAIN 审中-公开
标题翻译：确定在DAISY链中安装的电气部件的地址
公开(公告)号：WO2010082976A1
公开(公告)日：2010-07-22
申请号：PCT/US2009/066068
申请日：2009-11-30
申请人： ALLEGRO MICROSYSTEMS, INC. , MONREAL, Gerardo
发明人： MONREAL, Gerardo
IPC分类号： G06F13/42
CPC分类号： G06F13/37 , G06F13/4068
摘要： In one aspect, a system includes electrical components arranged in a daisy chain that include a first electrical component disposed at a first end of the daisy chain and a second electrical component disposed at an opposite end of the daisy chain than the first end. Each of the first and second electrical components includes an input port, an output port and a common port. The input port of the first electrical component is coupled to one of a supply voltage port or ground and the common ports of the first and second electrical components are coupled to the other one of the supply voltage or the ground. An address of the second electrical component is determined before addresses of the other of the electrical components are determined, and the addresses of the electrical components determine a position with respect to the other of the electrical components.
摘要翻译：在一个方面，一种系统包括以菊链形式布置的电子部件，其包括设置在菊链的第一端的第一电气部件和布置在菊花链相对于第一端的相对端的第二电气部件。第一和第二电气部件中的每一个包括输入端口，输出端口和公共端口。第一电气部件的输入端口耦合到电源电压端口或接地中的一个，并且第一和第二电气部件的公共端口耦合到电源电压或地面中的另一个。在确定另一个电气部件的地址之前确定第二电气部件的地址，并且电气部件的地址确定相对于另一个电气部件的位置。

5. 发明申请

WO2008048379A1 CHOPPED HALL EFFECT SENSOR 审中-公开
标题翻译： CHOPPED霍尔效应传感器
公开(公告)号：WO2008048379A1
公开(公告)日：2008-04-24
申请号：PCT/US2007/014667
申请日：2007-06-25
申请人： ALLEGRO MICROSYSTEMS, INC. , MONREAL, Gerardo , ROMERO, Hernan, D.
发明人： MONREAL, Gerardo , ROMERO, Hernan, D.
IPC分类号： G01D3/02 , G01R33/07
CPC分类号： G01D3/02 , G01R33/02 , G01R33/07
摘要： A chopped Hall effect sensor topology includes a switched Hall plate, an amplifier responsive to an output of the switched Hall plate and a filter stage responsive to the output of the amplifier and including an anti-aliasing filter and a selective filter that is tuned to the modulation frequency. The switched Hall plate includes a Hall element and a Hall plate modulation circuit that modulates the Hall offset signal component or the magnetic signal component. In embodiments in which the Hall offset signal component is modulated by the switched Hall plate, the amplifier, if chopped, includes an even number of additional modulation circuits. In embodiments in which the magnetic signal component is modulated by the switched Hall plate, the amplifier contains an odd number of modulation circuits. The described topology provides a low noise, fast response time Hall effect sensor.
摘要翻译：切碎的霍尔效应传感器拓扑包括切换的霍尔板，响应于开关霍尔板的输出的放大器和响应于放大器的输出的滤波器级，并且包括抗混叠滤波器和选择滤波器，该滤波器被调谐到调制频率。切换的霍尔板包括霍尔元件和霍尔板调制电路，其调制霍尔偏移信号分量或磁信号分量。在其中霍尔偏移信号分量由开关霍尔板调制的实施例中，放大器如果切断，则包括偶数个附加调制电路。在其中磁信号分量由开关霍尔板调制的实施例中，放大器包含奇数个调制电路。所描述的拓扑结构提供了低噪声，快速响应时间霍尔效应传感器。

6. 发明申请

WO2009134735A1 CHOPPER-STABILIZED AMPLIFIER AND MAGNETIC FIELD SENSOR 审中-公开
标题翻译： CHOPPER-STABILIZED放大器和磁场传感器
公开(公告)号：WO2009134735A1
公开(公告)日：2009-11-05
申请号：PCT/US2009/041873
申请日：2009-04-28
申请人： ALLEGRO MICROSYSTEMS, INC. , ROMERO, Hernan, D. , MONREAL, Gerardo
发明人： ROMERO, Hernan, D. , MONREAL, Gerardo
IPC分类号： H03F1/30 , H03F3/45 , G01R33/07
CPC分类号： H03F1/303 , G01R33/072 , H03F3/45977 , H03F2203/45212
摘要： A chopper stabilized amplifier comprises first and second front-end amplifiers (306, 318), each having a signal input (306a, 318a), a feedback input (306b, 318b) and an output (308, 320), a first switching circuit (310), first and second back-end amplifiers (314, 326) and a feedback path comprising a feedback circuit (328) and a second switching circuit (332). When applying an input signal (302a, 302b) comprising a desired AC component and an unwanted DC offset, both components are amplified by the first and second front-end amplifiers. The amplified components are than applied to the first switching circuit (310) which converts the undesired DC offset component into an undesired high-frequency signal, while the desired AC signal is converted into a desired DC signal. By connecting a suitable low-pass filter at the output of the chopper stabilized amplifier, the undesired high-frequency signal (former DC offset component) is removed.
摘要翻译：斩波稳定放大器包括第一和第二前端放大器（306,318），每个具有信号输入（306a，318a），反馈输入（306b，318b）和输出（308,320），第一开关电路（310），第一和第二后端放大器（314,326）以及包括反馈电路（328）和第二开关电路（332）的反馈路径。当应用包括期望的AC分量和不期望的DC偏移的输入信号（302a，302b）时，两个分量由第一和第二前端放大器放大。放大的分量不是施加到第一开关电路（310），该第一开关电路将期望的AC信号转换成期望的DC信号，将不期望的DC偏移分量转换成不需要的高频信号。通过在斩波稳定放大器的输出端连接合适的低通滤波器，去除不需要的高频信号（原来的直流偏移分量）。

7. 发明申请

WO2012015533A1 MAGNETIC FIELD SENSOR WITH IMPROVED DIFFERENTIATION BETWEEN A SENSED MAGNETIC FIELD SIGNAL AND A NOISE SIGNAL 审中-公开
标题翻译：感应磁场信号与噪声信号之间改善差分的磁场传感器
公开(公告)号：WO2012015533A1
公开(公告)日：2012-02-02
申请号：PCT/US2011/039394
申请日：2011-06-07
申请人： ALLEGRO MICROSYSTEMS, INC. , ROMERO, Hernan, D. , MONREAL, Gerardo
发明人： ROMERO, Hernan, D. , MONREAL, Gerardo
IPC分类号： G01R33/07 , G01R33/00
CPC分类号： G01R33/07 , G01R33/0029
摘要： A magnetic field sensor includes a Hall element configured to generate a Hall element output signal in response to a magnetic field, the Hall element output signal comprising a magnetic field signal component and an offset signal component. The magnetic field sensor also includes a Hall element modulation circuit coupled to receive the Hall element output signal and configured to generate a modulation circuit output signal. The Hall element modulation circuit is modulated with a modulation signal having a changing modulation frequency that changes between a minimum frequency and a maximum frequency.
摘要翻译：磁场传感器包括霍尔元件，其被配置为响应于磁场产生霍尔元件输出信号，霍尔元件输出信号包括磁场信号分量和偏移信号分量。磁场传感器还包括霍尔元件调制电路，该霍尔元件调制电路被耦合以接收霍尔元件输出信号并被配置为产生调制电路输出信号。霍尔元件调制电路用具有在最小频率和最大频率之间变化的调制频率的调制信号进行调制。

8. 发明申请

WO2010002585A1 NON-VOLATILE PROGRAMMABLE MEMORY CELL AND MEMORY ARRAY 审中-公开
标题翻译：非易失性可编程存储器单元和存储器阵列
公开(公告)号：WO2010002585A1
公开(公告)日：2010-01-07
申请号：PCT/US2009/047602
申请日：2009-06-17
申请人： ALLEGRO MICROSYSTEMS, INC. , MONREAL, Gerardo
发明人： MONREAL, Gerardo
IPC分类号： G11C17/16
CPC分类号： G11C17/16
摘要： A non-volatile one time programmable memory cell couples in series a two terminal fuse and a three terminal antifuse. A plurality of such memory cells can be included in a non-volatile programmable memory array. A non-volatile programmable memory cell capable of re-programming is also described.
摘要翻译：非易失性一次可编程存储器单元串联耦合两端保险丝和三端反熔丝。多个这样的存储器单元可以被包括在非易失性可编程存储器阵列中。还描述了能够重新编程的非易失性可编程存储器单元。

9. 发明申请

WO2013142015A1 METHOD AND APPARATUS TO DETECT A BROKEN WIRE CONDITION IN AN INTEGRATED CIRCUIT 审中-公开
标题翻译：在集成电路中检测线路条件的方法和装置
公开(公告)号：WO2013142015A1
公开(公告)日：2013-09-26
申请号：PCT/US2013/027886
申请日：2013-02-27
申请人： ALLEGRO MICROSYSTEMS, LLC. , PIRCHIO, Franco, Noel, Martin , VOISINE, Cory , ROMERO, Hernan, D. , MONREAL, Gerardo
发明人： PIRCHIO, Franco, Noel, Martin , VOISINE, Cory , ROMERO, Hernan, D. , MONREAL, Gerardo
IPC分类号： G01R19/165 , G01R31/02 , G01R31/04 , G01R31/28 , H03K19/003
CPC分类号： G01R31/026 , G01R31/046
摘要： An integrated circuit includes circuitry to sense the occurrence of a break in a ground connection and/or supply connection and to indicate same to an exterior environment. In at least one implementation, the break may be indicated by providing a signal on an output terminal of the device that is not associated with a normal output of the device.
摘要翻译：集成电路包括用于感测接地连接和/或供电连接中断的发生并将其指示到外部环境的电路。在至少一个实现中，可以通过在与设备的正常输出不相关联的设备的输出端上提供信号来指示中断。

10. 发明公开

EP2446287A1 CIRCUITS AND METHODS FOR GENERATING A DIAGNOSTIC MODE OF OPERATION IN A MAGNETIC FIELD SENSOR 有权转让
标题翻译：电路与一种用于制造诊断运行模式磁场传感器
公开(公告)号：EP2446287A1
公开(公告)日：2012-05-02
申请号：EP10739429.8
申请日：2010-07-21
申请人： Allegro Microsystems Inc
发明人： CESARETTI, Juan, Manuel , MONREAL, Gerardo , TAYLOR, William, P. , DOOGUE, Michael, C.
IPC分类号： G01R33/00
CPC分类号： G01R35/005 , G01R33/0035
摘要： A magnetic field sensor includes a diagnostic circuit that allows a self-test of most of, or all of, the circuitry of the magnetic field sensor, including a self-test of a magnetic field sensing element used within the magnetic field sensor. The magnetic field sensor can generate a diagnostic magnetic field to which the magnetic field sensor is responsive.

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