AH1899S中文资料Ultra Low Voltage High-Sensitivity Micropower Omnipolar Hall-Effect Switch数据手册Diodes规格书

描述 Description

The AH1899S 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, the average supply current is only 5.1µA at 1.2V and 5.8µA at 1.8V. To support portable equipment, the AH1899S can operate over the supply range of 1.1V to 2.0V and uses a hibernating clocking system to minimize the power consumption. To minimize PCB space, the AH1899S is available in a small low profile X2- DFN1010-4 (Type B) package.


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 is turned 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.