AH1893 Datasheet | Diodes Incorporated

Description The AH1893 is a high sensitivity micropower Omnipolar Hall effect switch IC with internal pull up and pull down capability. Designed for portable and battery powered equipment such as cellular phones and portable PCs to home appliances and industrial applications, the average supply current is only 4.3µA at 1.85V. To support potable equipment the AH1893 can operate over the supply range of 1.6V to 3.6V and uses a hibernating clocking system to minimize the power consumption. To minimize PCB space the AH1893 is available in small low profile X1-DFN1216-4 and SOT553 packages. The output is activated with either a north or south pole of sufficient magnetic field strength. When the magnetic flux density (B) perpendicular to the package is larger than operate point (Bop), the output will be turned on (pulled low) and held until B is lower than release point (Brp). Features - Omnipolar Operation (North or South pole) - Supply Voltage of 1.6V to 3.6V - High Sensitivity - Micropower Operation - Chopper Stabilized Design Provides - Superior Temperature Stability - Minimal Switch Point Drift - Enhanced Immunity to Physical Stress - No External Pull-up Resistors Required - Good RF Noise Immunity - -40°C to +85°C Operating Temperature - High ESD capability of 8k V (Human Body Model) - Small Low Profile SOT553 and X1-DFN1216-4 Packages - Totally Lead-Free & Fully Ro HS pliant (Notes 1 & 2) - Halogen and Antimony Free. “Green” Device (Note 3) Pin Assignments (Top View) X1-DFN1216-4 (Top View) SOT553 Applications - Open and Close Detect for Cellular Phones - Holster or Cover Detect for Cellular Phones and Tablet PCs - Cover or Display Switch in Portable PCs - Digital Still, Video Cameras and Handheld Gaming Consoles - Door, Lids and Tray Position Switches - Level, Proximity and Position Switches - Contact-Less Switches in Home Appliances and Industrial Applications Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (Ro HS) & 2011/65/EU (Ro HS 2) pliant....