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This sensor family consists of different two-wire Hall switches produced in CMOS technology. All sensors change the current consumption depending on the external magnetic field and require only two wires between sensor and evaluation circuit. The sensors of this family differ in the magnetic switching behavior and switching points.
The sensors include a temperature-compensated Hall plate with active offset compensation, a comparator, and a current source. The comparator compares the actual magnetic flux through the Hall plate (Hall voltage) with the fixed reference values (switching points). Accordingly, the current source is switched on (high current consumption) or off (low current consumption).
The active offset compensation leads to constant magnetic characteristics in the full supply voltage and temperature range. In addition, the magnetic parameters are robust against mechanical stress effects.
The sensors are designed for industrial and automotive applications and operate with supply voltages from 3.75 V to 24 V in the junction temperature range from -40 °C up to 140 °C. All sensors are available in the SMD package SOT89B-1 and in the leaded versions TO92UA-1 and TO92UA-2.
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Current output for two-wire applications
Low current consumption: 5 mA...6.9 mA
High current consumption: 12 mA...17 mA
Junction temperature range from -40 C up to 140 C
Operates from 3.75 V to 24 V supply voltage
Operates with static magnetic fields and dynamic magnetic fields up to 10 kHz
Switching offset compensation at typically 145 kHz
Overvoltage and reverse-voltage protection
Magnetic characteristics are robust against mechanical stress effects
Constant magnetic switching points over a wide supply voltage range the decrease of magnetic flux density caused by rising temperature in the sensor system is compensated by a built-in negative temperature coefficient of the magnetic characteristics
Ideal sensor for applications in extreme automotive and Industrial environments
EMC corresponding to ISO 7637
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