Miniature micropower hall switch targets consumer and industrial tech

Specifically designed for battery-powered consumer equipment such as cellular phones, tablets, digital still and video cameras, while also embracing home appliances and industrial systems, the AH1389 Hall-effect switch IC introduced by Diodes Incorporated offers a small, simple and versatile contactless switch solution. Applications include open/close detection for smart cover switches for cell phones and tablets, in addition to holster and dock detection for phones. It also features 360 degree rotation detection for display screens, video camera screen position detection, as well as position detection for doors, trays, selector switches and electronic locks in home appliances. The device is a unipolar Hall switch that offers high sensitivity with a tightly defined magnetic operating window across its full operating voltage and temperature range. It provides dual outputs for detecting north or south poles independently. Output 1 will switch on in the presence of a north pole with a magnetic flux strength that is below -25G and release when the flux exceeds -20G. Similarly, output two will switch in the presence of a south pole with a magnetic flux magnitude greater than +25G and release when the flux magnitude falls below +20G. Optimized for portable and battery-powered applications, the micropower device operates from a 1.6V to 3.6V supply while consuming an average current of only 4µA. The device is specified for operation over a -40C to +85C temperature range and provides a high ESD rating of 8kV for improved reliability and ease of handling during end-equipment manufacture.