Detail A3144 OH3144 Y3144 HALL EFFECT SENSOR SWITCH IC
SEN-0021
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The A3144 is an integrated Hall effect nonlatching sensor. That's nice but what does it do? Holding a magnet near the sensor will cause the output pin to toggle. This makes for a robust presence sensor. A reed sensor also works nicely, but can be limited by the glass encapsulation and size. A hall effect sensor is much smaller, but can handle less current than a reed switch.
The device includes an on-chip Hall voltage generator for magnetic sensing, a comparator that amplifies the Hall voltage, and a Schmitt trigger to provide switching hysteresis for noise rejection, and open-collector output. An internal bandgap regulator is used to provide temperature compensated supply voltage for internal circuits and allows a wide operating supply range.If a magnetic flux density larger than threshold Bop, DO is turned on (low). The output state is held until a magnetic flux density reversal falls below Brp causing DO to be turned off (high).
Specifications: - Working Voltage: 3.5 - 24 V - Technology: CMOS - Input Type: Schmitt Trigger - Output Type: Open-drain - Output Current: 50 mA (max) - Packaging: TO-92 - Features; Equipped internal voltage regulator
Paket : 1x A3144 OH3144 Y3144 HALL EFFECT SENSOR SWITCH IC