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Dongguan Hallsen Technology Co., Ltd
Basic working principle of Hall effect sensor: HS211X sensor can detect changes in the surrounding magnetic field. When the doors and windows are closed, the magnetic field between the door magnet and the door frame magnet will be in a stable state; when the doors and windows are opened, the magnetic field will change. HS211X can sense this change and notify the security system through signals, so as to monitor the opening and closing status of the doors and windows in real time.
Recommended model: HS4913 low-power high-sensitivity Hall chip
HS4913 is a non-polar Hall switch based on mixed-signal CMOS technology. This IC uses advanced chopper stabilization technology, so it can provide accurate and stable magnetic switch points.
In terms of circuit design, HS4913 provides an embedded controlled clock mechanism to provide a clock source for the Hall device and analog signal processing circuit. At the same time, this controlled clock mechanism can send a control signal to make the circuit with high current consumption enter the "sleep" mode periodically; through this mechanism, the chip is periodically "woken up" and detects the strength of the magnetic field passing through the Hall device according to the predetermined magnetic field strength threshold. If the magnetic flux density is higher than the "operating point" threshold or lower than the "release point" threshold, the open-drain output transistor is driven and latched into the corresponding state. During the "sleep" cycle, the output transistor is locked in its previous state. In battery-powered applications, this design provides the best support for extending the working life.
The output transistor of HS4913 is locked in the on state when there is a certain strong south pole or north pole magnetic field facing the package marking side, and is locked in the off state when there is no magnetic field.
