Hall Sensor Terminal Interconnection for Offset Reduction
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Solution Overview
Problem
Existing magnetic field sensors have limitations in sensitivity and offset reduction, particularly in complex arrangements, which can be improved for better performance.
Innovation Solution
A magnetic field sensor design that connects two Hall sensors with specific terminal contacts, increasing sensitivity by interconnecting the Hall voltage and incorporating a control circuit integrated on a semiconductor body, with terminal contacts optimized for current flow and supply voltage connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple Hall sensors are arranged in parallel with cyclic commutation to reduce offset, then offset reduction is improved, but device complexity increases
Solution Approach 1:
The patent combines two Hall sensors into a single integrated sensor unit with shared terminal contacts. The first Hall sensor has terminal contacts 1-5 and the second Hall sensor has terminal contacts 6-10, with specific connections: terminal contact 1 connected to terminal contacts 5, 6, and 10; terminal contact 2 connected to terminal contact 9; terminal contact 4 connected to terminal contact 7. This merging reduces the number of independent components while maintaining the offset reduction functionality through the combined Hall voltage output.
2Measurement precision
If more Hall sensors are connected to increase sensitivity, then sensitivity is improved, but device complexity increases
Solution Approach 1:
The patent merges two Hall sensors into a single integrated unit with optimized terminal connections to achieve sensitivity improvement without proportionally increasing complexity. The specific interconnection pattern (terminal contact 1 to 5, 6, 10; terminal contact 2 to 9; terminal contact 4 to 7) creates a compact configuration that enhances Hall voltage output while maintaining manageable structural complexity.
Solution Approach 2:
The integrated sensor unit performs multiple functions: it provides offset reduction through the combined sensor arrangement, increases sensitivity by a factor of 1.3 compared to single sensors, and reduces the number of independent terminal connections required. The shared terminal contacts serve multiple purposes, connecting both Hall sensors while reducing overall connection complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances sensitivity by a factor of 1.3 compared to single sensors, achieving improved magnetic field detection with reduced offset, as demonstrated by increased Hall voltage and efficient integration of the magnetic field sensor components.
Implementation Method 1
A magnetic field sensor has a first Hall sensor (20) with a first terminal contact (22) with a second terminal contact (24) with a third terminal contact (26) and with a fourth terminal contact (28) and with a fifth terminal contact (30)
Data Source
AI summary
A magnetic field sensor is provided, having a first Hall sensor with a first terminal contact and with a second terminal contact and with a third terminal contact and with a fourth terminal contact and with a fifth terminal contact, and a second Hall sensor with a sixth terminal contact and with a seventh terminal contact and with an eighth terminal contact and with a ninth terminal contact and with a tenth terminal contact, whereby the first terminal contact is connected to the fifth terminal contact and to the sixth terminal contact and to the tenth terminal contact, and the second terminal contact is connected to the ninth terminal contact, and the fourth terminal contact is connected to the seventh terminal contact.