Product InformationBack to top
The HAL® 710 and the HAL® 730 are monolithic integrated Hall-effect sensors manufactured in CMOS technology with two independent Hall plates S1 and S2 spaced 2.35 mm apart. The devices have two open-drain outputs. The Count Output operates like a single latched Hall switch according to the magnetic field present at Hall plate S1, while the Direction Output indicates the direction of a linear or rotating movement of magnetic objects. In combination with an active target providing a sequence of alternating magnetic north and south poles, the sensors generate the signals required to control position, speed, and direction of the target movement. The internal circuitry evaluates the direction of the movement and updates the Direction Output at every edge of the Count Signal (rising and falling). The state of the Direction Output only changes at a rising or falling edge of the Count Output. The design ensures a setup time for the Direction Output with respect to the corresponding Count Signal edge of 1/2 clock periods (1 µs minimum).
The devices include temperature compensation and active offset compensation. These features provide excellent stability and matching of the switching points in the presence of mechanical stress over the whole temperature and supply voltage range. This is required by systems determining the direction from the comparison of two signals.
The sensors are designed for industrial and automotive applications and operate with supply voltages from 3.8 V to 24 V in the ambient temperature range from -40 °C up to 125 °C.
FeaturesBack to top
Generation of Count Signals and Direction Signals
Delay of the Count Signals with respect to the Direction Signal of 1 s minimum
Switching type: latching
Switching offset compensation at typically 150 kHz
Operation from 3.8 V to 24 V supply voltage
Overvoltage protection at all pins
Reverse-voltage protection at VDD-pin
Robustness of magnetic characteristics against mechanical stress
Short-circuit protected open-drain outputs by thermal shut down
Constant switching points over a wide supply voltage range
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 140 C
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