Unlock instant, AI-driven research and patent intelligence for your innovation.
Magnetic sensor circuit
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
一种磁传感器、传感器的技术，应用在电路、仪器、应用电-磁效应的器件等方向
Active Publication Date: 2018-09-25
SII SEMICONDUCTOR CORP
View PDF12 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0009] However, when the horizontal Hall element and the vertical Hall element are driven by different driving sources, the relative error of the driving source becomes the relative difference between the detection signals of the detected vertical magnetic field and the horizontal magnetic field. error
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
no. 1 approach
[0037] Next, refer to Figure 2 to Figure 5 The magnetic sensor circuit of the first embodiment will be described.
[0038] figure 2 It is a circuit diagram in the first phase of the magnetic sensor circuit 100 of the first embodiment.
[0039] image 3 It is a circuit diagram in the second phase of the magnetic sensor circuit 100 of the first embodiment.
[0040] Figure 4 It is a circuit diagram in the third phase of the magnetic sensor circuit 100 of the first embodiment.
[0041] Figure 5 It is a circuit diagram in the fourth phase of the magnetic sensor circuit 100 of the first embodiment.
[0042] The magnetic sensor circuit 100 of the first embodiment has a driving source PW1, a first magnetism detection unit VSA21, a second magnetism detection unit HSA21, a first switch circuit SW1, a second switch circuit SW2, an amplifier circuit AMP1, and an amplifier circuit AMP2.
[0043] The first magnetic detection unit VSA21 has a vertical Hall element VS1 as a magnetoelectric conversio...
no. 2 approach
[0106] Next, refer to Figure 6 to Figure 9 The second embodiment of the magnetic sensor circuit will be described. In addition, with regard to the same configuration and operation as those of the first embodiment, the same reference numerals are assigned, and the description thereof will be omitted.
[0107] Image 6 It is a circuit diagram in the first phase of the magnetic sensor circuit 100a of the second embodiment.
[0108] Figure 7 It is a circuit diagram in the second phase of the magnetic sensor circuit 100a of the second embodiment.
[0109] Figure 8 It is a circuit diagram in the third phase of the magnetic sensor circuit 100a of the second embodiment.
[0110] Picture 9 It is a circuit diagram in the fourth phase of the magnetic sensor circuit 100a of the second embodiment.
[0111] The magnetic sensor circuit 100a of the second embodiment has a driving source PW61, a first magnetism detection unit VSA61 and a first magnetism detection unit VSA62, a second magnetism det...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
A magnetic sensor circuit includes a first magnetic detection portion and a second magnetic detection portion. The first magnetic detection portion has: at least two output terminals for outputting signals opposite to a phase corresponding to strength of a magnetic field in a first direction; a positive terminal to which a drive current of the signals is supplied; and a negative terminal from which the drive current flows out. The second magnetic detection portion has: at least two terminals for outputting signals opposite a phase corresponding to strength of a magnetic field in a second direction different from the first direction; and a positive terminal to which the drive current of the signals is supplied. The positive terminal of the first magnetic detection portion, the negative terminal of the first magnetic detection portion, and the positive terminal of the second magnetic detection portion are connected in series with respect to a path of the drive current of the first signals supplied from a power supply.
Description
Technical field [0001] The present invention relates to a magnetic sensor circuit. Background technique [0002] Magnetic sensors using magnetoelectric conversion elements (for example, Hall elements) are used as non-contact sensors in various electronic devices in recent years. For example, foldable mobile phones use this magnetic sensor. The magnetic sensor detects the opening and closing of the mobile phone when the magnetic field exceeds a certain threshold. [0003] In addition, there is a structure that integrally has a horizontal Hall element and a vertical Hall element: the horizontal Hall element detects a magnetic field component perpendicular to the semiconductor substrate on which the sensor is mounted, and the vertical Hall element detects parallel to the semiconductor substrate The magnetic field component. The sensor is applied to an encoder IC (Integrated Circuit) that detects the rotation speed and direction of a rotating body based on the detection signals of t...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More