Product InformationBack to top
The HAL® 300 is a differential Hall switch produced in CMOS technology. The sensor includes 2 temperaturecompensated Hall plates (2.05 mm apart) with active offset compensation, a differential amplifier with a Schmitt trigger, and an open-drain output transistor.
The HAL 300 is a differential sensor which responds to spatial differences of the magnetic field. The Hall voltages at the two Hall plates, S1 and S2, are amplified with a differential amplifier. The differential signal is compared with the actual switching level of the internal Schmitt trigger. Accordingly, the output transistor is switched on or off. The sensor has a bipolar switching behavior and requires positive and negative values of delta B = BS1–BS2 for correct operation. For applications in which a magnet is mounted on the back side of the package (back-biased applications), the HAL 320 is recommended. The active offset compensation leads to constant magnetic characteristics over supply voltage and temperature.
The sensor is designed for industrial and automotive applications and operates with supply voltages from 4.5 V to 24 V in the ambient temperature range from –40 °C up to 150 °C.
FeaturesBack to top
Distance between Hall plates: 2.05 mm
Operates from 4.5 V to 24 V supply voltage
Switching offset compensation at 62 kHz
Reverse-voltage protection at VDD-pin
Short-circuit protected open-drain output by thermal shutdown
Operates with magnetic fields from DC to 10 kHz
Output turns low with magnetic south pole on branded side of package and with a higher magnetic flux density in sensitive area S1 as in S2
On-chip temperature compensation circuitry minimizes shifts of the magnetic parameters over temperature and 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 hysteresis
EMC corresponding to ISO 7637
SpecificationsBack to top
Brushless DC Motors
Magnetic B OFF
Magnetic B ON
Position and End Detection
Solid State Switch
-40 to 170 C
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