Omni-Polar Micro-Power Hall Switch AR1230 AR1230 is a low-power Hall switch sensor specifically designed for space-constrained systems and battery-sensitive applications. The chip offers multiple magnetic threshold options, switching frequencies, and package types to accommodate a variety of uses. When the applied S-pole or N-pole magnetic flux density exceeds the operating point (BOP), the chip outputs a low level and maintains it until the magnetic flux density drops below the release point (BRP), at which point the output returns to a high level. The chip incorporates a temperature compensation circuit and clock logic circuitry to ensure stable operating points and switching frequencies. It provides omnipolar magnetic response with extremely low current consumption. AR1230 operates within a supply voltage range of 1.6V to 5.5V and is available in standard SOT-23-3L and TO-92S packages. ### 1. Product Features - **Low Power Consumption**: 5Hz version: 1.6μA @ 1.8V - **Wide Operating Voltage Range**: 1.6V to 5.5V - **Typical Magnetic Threshold**: BOP = 33 Gs, BRP = 23 Gs - **Omnipolar Magnetic Detection** - **CMOS Push-Pull Output** - **Packages**: SOT-23-3L, SOT-553, TO-92S - **Operating Temperature Range**: -40°C to 85°C - **Excellent ESD Performance**: HBM 8KV - **RoHS Compliant** ### 2. Typical Applications - Laptop and tablet switch detection - TWS earphones, smartphones - Electronic locks, valve position detection - Water meters, gas meters, flow meters - Non-contact detection