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Dongguan Hallsen Technology Co., Ltd
The application principle of Hall switches in intelligent monitoring intelligent switch lights: By connecting the Hall switch to lamps or lighting control devices, when someone passes by or enters a specific area, the Hall switch senses the change in the magnetic field and automatically turns the light on or off. This provides users with an intelligent lighting control experience while also saving energy.
Recommended model: HS481 omnipolar Hall effect sensor
HS481 is a non-polar Hall switch based on mixed-signal CMOS technology. This IC uses advanced chopper stabilization technology to provide accurate and stable magnetic switch points.
In terms of circuit design, HS481 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;
Also 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. In 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 HS481 is locked in the on state when there is a certain strong south or north magnetic field facing the package marking side, and locked in the off state when there is no magnetic field.
