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Diodes Incorporated AH139x Dual Output Unipolar Hall Effect Switch ICs offer high-sensitivity and ultra-low power in miniature packages and are specifically designed for portable/battery-powered consumer equipment, home appliances, and industrial applications. Operating over a 1.6V to 5.5V supply range and -40°C to +85°C temperature range, the AH1391 and AH1392 devices use a sleep function to give an average supply current of only 1.1μA at 1.85V. The AH139x has a 6kV ESD rating on the supply and output pins. To minimize PCB space, these ICs are packaged in small, low-profile X2-DFN1410-4 and X2-DFN1010-4 (Type B) packages.
A North pole of sufficient strength will turn Output1 on, and a South pole of sufficient strength will turn on Output2. Output1 is turned on (pulled low) when the magnetic flux density (B), perpendicular to the part marking surface, falls below North field operate point BOPN (-25G typical). Output1 is held low until B rises above the North field release point BRPN (-20G typical). Similarly, Output2 will operate (pulled low) when B to the part marking surface rises above the South field operate point BOPS (25G typical) and is held low until B falls below the South field release point BRPS (20G typical).
