Adjustable Hall Effect Switch with magnetic field measure for on-site calibration
Response time 500 ns
High resolution ±0.5 Gauss
Adjustable magnitude sensing range:
±500 Gauss on 5V supplied voltage; ±1000 Gauss on 12V supplied voltage
Output “High” when VB > Vset; Output “Low” when VB < Vset
Wide operating voltage range 3 V ~ 12 V
Almost zero hysteresis
23 kHz bandwidth
Functional Description :
The WSH237 is an adjustable Hall Effect Switch with magnetic field measure function for on-site calibration. The Hall sensing switching point of the magnetic field is adjustable through the input reference voltage of Vset pin. The output voltage (Vout) turns to high voltage level when the internal voltage (VB) is greater than the reference voltage (Vset). In contrast, Vout turns to low voltage level when VB is smaller than Vset.
This function allows WSH237 to be applied in precision positioning, motion detection, and over-current detection, and etc
WSH237 also can accurately track extremely small change in magnetic flux density by converting it proportionally into a analog voltage signal. The
temperature-dependent bias in WSH237 increases the supply voltage of the hall plates and adjusts the switching points to the decreasing induction of magnets at higher temperatures. Therefore, WSH237 has wide operation temperature range which is from -40℃ to +125℃.
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