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Magnetic sensor integrated circuits, motor components and application equipment

An integrated circuit and magnetic sensor technology, which is applied in the direction of electric components, electrical components, instruments, etc., can solve the problems of complex and high cost of magnetic sensor integrated circuit power modules

Active Publication Date: 2021-03-30
JOHNSON ELECTRIC SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, the internal power module of the magnetic sensor integrated circuit is more complicated and the cost is higher

Method used

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  • Magnetic sensor integrated circuits, motor components and application equipment
  • Magnetic sensor integrated circuits, motor components and application equipment
  • Magnetic sensor integrated circuits, motor components and application equipment

Examples

Experimental program
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Embodiment Construction

[0047] refer to figure 1 As shown, the magnetic sensor integrated circuit of an embodiment of the present invention includes a housing, a semiconductor substrate disposed in the housing, an electronic circuit disposed on the semiconductor substrate, and an output port 3 protruding from the housing and used for connecting The input port 1 of the external power supply, the electronic circuit includes a magnetic field detection circuit 2;

[0048] The magnetic field detection circuit 2 includes a magnetic sensing element 21 , a signal processing unit 22 and a comparator 23 . in,

[0049] The magnetic sensing element 21 is used for sensing an external magnetic field and outputting a detection electric signal;

[0050] The signal processing unit 22 is configured to amplify and de-interference the detected electrical signal to generate an analog electrical signal;

[0051] The comparator 23 is used to compare the analog electrical signal with a reference voltage of the comparator, ...

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Abstract

PROBLEM TO BE SOLVED: To provide an improved magnetic sensor integrated circuit, motor assembly and application device.SOLUTION: The magnetic sensor integrated circuit includes a magnetic field detection circuit. The magnetic field detection circuit includes a magnetic sensing element configured to sense an external magnetic field and output an electrical detection signal, a signal processing unit configured to perform amplification and interference rejection on the electrical detection signal to generate an analog signal, and a comparator configured to compare the analog electrical signal with a reference voltage, and output a magnet detection signal corresponding to the external magnetic field. The reference voltage is generated based on an input common-mode voltage of the magnetic field detection circuit.SELECTED DRAWING: Figure 1

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a magnetic sensor integrated circuit. Background technique [0002] Magnetic sensor integrated circuits are widely used in modern industry and electronic products, which can detect external magnetic field information and convert the detected information into electrical signals according to certain rules. [0003] Some magnetic sensor integrated circuits are equipped with a comparator for comparing the detected voltage signal with a reference voltage to determine the polarity of the external magnetic field. In the prior art, the reference voltage of the comparator is usually generated by a power module in the magnetic sensor integrated circuit based on a stable reference voltage generated by an internal bandgap reference voltage source. In this way, the internal power supply module of the magnetic sensor integrated circuit is more complicated and the cost is higher. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/02G01R33/00H02K11/215
CPCG01R33/0029G01R33/02
Inventor 蔡光杰王俊辉
Owner JOHNSON ELECTRIC SHENZHEN