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The AH1381/AH1382/AH1383 is an ultra-low power digital Unipolar Hall effect switch IC from Diodes Incorporated’s broad Hall effect switches family. Thanks to the hibernating clocking system, the average supply current is only 1.6μA at 3V, which makes the AH1381/AH1382/AH1383 perfectly fit battery-powered consumer products, gas or water meters, smoke detectors and IoT devices. The wider range of the supply voltage (1.6V to 5.5V) extends battery operating time and supports low-voltage system microcontrollers, which provides great flexibility for system design. The advanced chopper stabilized design provides superior stability on switch operating point over temperature and supply voltage. The high ESD level up to 8kV helps to improve the system robustness.
The output is activated with south pole of sufficient magnetic field strength. When the magnetic flux density (B) perpendicular to the package is larger than operate point (BOPS), the output will be turned on (pulled low) and held until B is lower than release point (BRPS).
The devices are packaged in SOT23 (Type S) and small low profile X2-DFN1410-4 and X2-DFN1010-4 (Type B).
Unipolar Operation (South Pole)
Supply Voltage of 1.6V to 5.5V
Micro Power Operation
Chopper Stabilized Design Provides:
Superior Temperature Stability
Minimal Switch Point Drift
Enhanced Immunity to Physical Stress
No External Pullup Resistors Required
Good RF Noise Immunity
-40°C to +85°C Operating Temperature
High ESD Capability of 8kV (Human Body Model)
Small Low Profile SOT23 (Type S), X2-DFN1410-4 and X2-DFN1010-4 (Type B) Packages