AH1801 MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH Features General Description Micropower operation AH1801 is a Micropower, Ultra-sensitive Hall Effect Switch, which is with two Hall effect plates and a output driver, mainly designed Operation with North or South Pole for batteryoperation, hand-held equipment (such as Cellular and 2.5V to 5.5V battery operation Cordless Phone, PDA). The total operation power is down to Inverted Output-on without Magnet present 24uW in the 3V supply. Chopper stabilized Superior temperature stability Either north or south pole of sufficient strength will turn the output Extremely Low Switch-Point Drift off. The output will be turned on under no magnetic field. Insensitive to Physical Stress While the magnetic flux density (B) is larger than operate point Good RF noise immunity (Bop), the output will be turned off, the output is held until B is -40C to 85 C operating temperature lower than release point (Brp), then turned on. Low profile 3 pin SC59 (commonly known as SOT23 in Asia) and DFN2020-3, DFN2020-6 package ESD (HBM) 5KV for DFN2020-3 and DFN2020-6 6KV for SC59 SC59, DFN2020-3 and DFN2020-6: Available in Green Molding Compound (No Br, Sb) Lead Free Finish / RoHS Compliant (Note 1) Applications Cellular phone PDA Cordless phone Ordering Information AH1801 - XX G - 7 Package Green Packing W : SC59 G : Green 7 : Tape & Reel FJ : DFN2020-3 SN : DFN2020-6 Device 7 Tape and Reel Package Packaging Code (Note 2) Quantity Part Number Suffix AH1801-WG-7 W SC59 3000/Tape & Reel -7 AH1801-FJG-7 FJ DFN2020-3 3000/Tape & Reel -7 AH1801-SNG-7 SN DFN2020-6 3000/Tape & Reel -7 Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at AH1801 MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH Pin Assignment (1) SC59 (2) DFN2020-3 ( Top View ) ( Top View ) 3. GND 2. Output GND 3. 1. Vdd 1. Vdd 3. Output (3) DFN2020-6 ( Top View ) 5. GND 6. NC 4. NC 1. Vdd 2. NC 3. Output Notes: 3. NC is No Connection, which is recommended to be tied to ground. Pin Descriptions Pin Name P/I/O Description Vdd P/I Power Supply Input GND P/I Ground Output O Output Pin NC No Connected AH1801 Rev. 7 2 of 10 FEBRUARY 2009 www.diodes.com Diodes Incorporated