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AH1912-FA-7

DIOAH1912-FA-7

Diodes Incorporated
Digital Switch Omnipolar Switch Push-Pull Hall Effect X1-DFN1216-4
Active121,253 in stock
Datasheet Digi-Key Compare Prices

Overview

The AH1912-FA-7 is a high-sensitivity, micro-power omnipolar Hall effect switch designed for battery-operated systems. It features a push-pull output that eliminates the need for external pull-up resistors and operates across a wide 1.6V to 5.5V supply range. The device utilizes a chopper-stabilized design to ensure superior temperature stability and minimal switch point drift.

Why Choose This Part

The AH1912-FA-7 offers an exceptionally low typical sleep current of 0.6uA, making it ideal for always-on battery applications. Its omnipolar operation simplifies assembly by responding to either North or South magnetic poles, while the integrated push-pull output reduces bill-of-materials cost and PCB footprint.

Applications

Lid and Cover Detection
Detecting the open or closed state of laptop lids, handheld device covers, or enclosure panels.
Proximity and Position Sensing
Non-contact sensing for industrial valve positioning, door interlocks, and security system reed switch replacement.
Utility Metering
Tamper detection and pulse counting in water, gas, and electricity meters requiring ultra-low standby current.
Handheld Battery Devices
Low-power wake-up triggers for portable medical devices and consumer electronics to extend battery life.

Key Specifications

Function Omnipolar Switch
Technology Hall Effect
Output Type Push-Pull
Polarization North Pole, South Pole
Mounting Type Surface Mount
Sensing Range +/-4.2mT Trip, +/-3.3mT Release
Package / Case 4-UDFN Exposed Pad
Test Condition -40degC ~ 85degC
Voltage - Supply 1.6V ~ 5.5V
Operating Temperature -40degC ~ 85degC (TA)
Current - Output (Max) 1mA
Current - Supply (Max) 3uA
Supplier Device Package X1-DFN1216-4

Getting Started

To evaluate the AH1912-FA-7, provide a stable supply voltage between 1.6V and 5.5V across VDD and GND pins. Ensure a 0.1uF ceramic bypass capacitor is placed close to the VDD pin for noise decoupling. Use a permanent magnet with a field strength exceeding the 4.2mT typical operating point (Bop) to trigger the output state change.

Also Consider

DRV5032FCDBZR TITexas Instruments - Offers an even lower 0.54uA average supply current for extreme power-sensitive applications.
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