AX8101

AX8101/A MicroPower, Ultra-sensitive Hall Effect Switch  GENERAL DESCRIPTION AX8101/A is a three-terminal Hall Effect sensor device with a output driver, mainly designed for battery–operation, hand-held equipment (such as Cellular and Cordless Phone, PDA). After power-on, AX8101/A will detect and setup the operating pole (North or South) to avoid another side magnetic noise (Patent pending). For AX8101, the output will be turned off under no magnetic field. While the magnetic flux density (B) is larger than operate point (Bop), the output will be turned on; the output is latched until B is lower than release point (Brp).  FEATURES Micro Power Operation for Battery Applications 2.4V to 5.5V battery operation Chopper Stabilized Technology Operation with North or South Pole High sensitivity and high stability of the magnetic switching points 3-pin SOT-23/Thin SOT-23 Pb-Free packages  BLOCK DIAGRAM VÛmw`RyÑb€ VDD w.goftech.com Power-ON Reset VOUT N/S Pole Detection and setup Awake/Sleep Timing Control Hall Plate Offset Cancellation + Latch N-MOS GND 1/6 Axelite Confidential Materials, do not copy or distribute without written consent. Rev.1.3 Aug.24, 2010 AX8101/A  PIN ASSIGNMET GND 2 2 Name VDD GND Description Power Input Ground AX8101: B>Bops or B Brpn, Output is High. AX8101A: B>Bops or B Brpn, Output is Low. AX8101/A 1 3 Output VOUT VDD (SOT-23-3L/TSOT-23-3L) (TOP VIEW)  ORDER/MAR...