AX8112

AX8112 MicroPower, Ultra-sensitive Hall Effect Switch  GENERAL DESCRIPTION AX8112 is a Hall Effect sensor device with Dual output driver, mainly designed for battery–operation, hand-held equipment (such as Cellular and Cordless Phone, PDA). For AX8112, the total operation power is down to 10uW in the 1.8V supply. Either north or South Pole of sufficient strength will turn the output on. The output will be turned off under no magnetic field. When the magnetic flux density (B) is larger than operate point (Bop) the output is switched on. 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. The AX8112 has two outputs, output one pulls low when switched on and output two is inverted.  FEATURES Micro Power Operation for Battery Applications 1.65V to 3.30V battery operation Chopper Stabilized Technology VÛmw`RyÑb€ or South Pole Operation with North Good RF noise immunity High sensitivity and high stability of the magnetic switching points 5-pin Thin TSOT23 w.goftechm Package  BLOCK DIAGRAM VDD Awake/Sleep Timing Control P-MOS OUT1 N-MOS Hall Plate Logic Offset Cancellation VDD P-MOS + OUT2 N-MOS GND 1/7 Axelite Confidential Materials, do not copy or distribute without written consent. Rev.1.0 Aug.16, 2011 AX8112  PIN ASSIGNMET The packages of AX8112 are TSOT23-5L; the pin assignment is given by: OUT1 5 VDD 4 Name Description VDD Power Input TSOT23-5L GND Ground OUT1 Output Pin ...