AH1808-W-7

AH1808 HIGH SENSITIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH Description Pin Assignments The AH1808 is a high-sensitivity, micropower Omnipolar Hall Effect switch IC. It is designed for portable and battery powered consumer equipment, home appliances and industrial equipment such as smartmeter magnetic-tamper detection. Based on two sensitive Hall effect plates and a chopper stabilized architecture, the AH1808 provides a reliable solution over the whole operating range. To support portable and battery powered equipment, the design has been optimized to operate over the supply range of 2.5V to 5.5V and consumes only 24µW with a supply of 3V. (Top View) GND 3 OUTPUT 1 VDD 2 SC59 The single open drain output can be switched on with either a North or South pole of sufficient strength. When the magnetic flux density (B) perpendicular to the package is larger than operate point (Bop), the output is switched on (pulled low). The output is turned off when B becomes lower than the release point (Brp). The output will remain off when there is no magnetic field. (Top View) NC 1 GND 2 NC 3 Features             Omnipolar (North or South Pole) Operation High Sensitivity Single Open Drain Output Micropower Operation 2.5V to 5.5V Operating Range Chopper Stabilized Design Provides Superior Temperature Stability Minimal Switch Point Drift Enhanced Immunity to Stress Good RF Noise Immunity -40°C to +85°C Operating Temperature ESD (HBM) > 6KV Small Low Profile SOT553 and Industry Standard SC59, SIP-3 (Ammo Pack) and SIP-3 (Bulk Pack) Packages Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Notes: 5 OUTPUT 4 VDD SOT553 3. OUTPUT 2. GND 1. VDD SIP-3 (Bulk Pack) Applications  Doors, Lids, Covers and Trays Position Detect Switches  Display Switch for Portable PCs and Tablets     On/Off Switch for PDAs and Digital Cameras Liquid Level Detection for Coffee Machines Smart Meters Position, Proximity and Level Detection Contact-Less Switch in Battery Powered Consumer, Home Appliances and Industrial Applications 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated‘s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green‖ products are defined as those which contain