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Magnetic latches with industry-leading jitter performance for optimized motor control, vertical Hall technology that is revolutionizing the mechanical design of motors and encoders, the ability to survive the harshest automotive voltage transients, the broadest portfolio of continuous-time switches and latches in the industry. These are just some of the reasons why Allegro is a clear leader in digital position sensing.
Looking for safety? All of our switches and latches are now being developed to ISO 26262 standards. To determine the part best suited for your system, please refer to our Switches and Latches Selection Guide.
Our high-performance magnetic latches offer you industry-leading jitter performance, EMC/ESD robustness, and magnetic precision—all at competitive price points.
Vertical Hall Technology by Allegro (VHT) sensing solutions revolutionize motors and encoders, delivering quadrature signals independent of magnet pitch or air gap.
OEMs and tier one providers choose from our broad portfolio of Hall-effect switches for applications like seat belt buckles, seat track, shift selectors, door ajar, and so much more.
Perfect for sensing absolute position or proximity in harsh automotive environments, our three-wire switches are ideal for applications like shift selectors, door ajar, user interfaces and vane-interrupt systems.
Extend the life of your battery-powered devices with these integrated Hall-effect sensor ICs. These switches offer low power consumption and are ideal for use in on/off switching applications and for detection of tampering in utility meters.
Don't see the right solution? Take a look at products we've developed for very specific applications. We offer deep and broad applications expertise to help you find—or create—a device that fits your needs.
This application guide will outline the differences between the two sensor types and provide system designers with the tools needed in order to select the appropriate sensor for their system.Learn More
This application note assumes the user is programming an Allegro fully integrated back biased Hall effect switch or that the user has designed an appropriate magnetic circuit to accommodate the programming range of a programmable unipolar Hall effect switch.Learn More
The A1262 integrated circuit is an ultrasensitive dual-channel Hall-effect latch. As with conventional dual-channel latches, the quadrature outputs of the A1262 indicate rotation direction and position/speed of a rotating ring magnet target.Learn More
The A1262 2D dual-channel Hall-effect sensor IC is offered in a 5-pin SOT23W surface-mount package, as well as a 4-pin SIP through-hole package. It features operation with traditional planar—as well as vertical—magnetic field direction.Learn More
AN296233 - Electrical interfaces for active sensor integrated circuits (ICs) include both two-wire and three-wire interfaces. These two technology styles are named for the number of required connections needed to communicate the sensor output. This application note discusses use and tradeoffs of ...Learn More
AN296238 - In this applicate note, we discuss the use of the APS13568, an integrated circuit that combines an ultra-sensitive, omnipolar, micropower Hall-effect switch with a linear programmable current regulator which can provide up to 150 mA current to drive high brightness LEDs.Learn More
There are four general categories of Hall-effect IC devices that provide a digital output: unipolar switches, bipolar switches, omnipolar switches, and latches. Latching Hall-effect sensor ICs, often referred to as "latches," are digital output Hall-effect switches that latch output states.Learn More
Proper control of Electric Power Steering (EPS) systems requires both speed and direction information from the steering input shaft. This control will typically come from both high-resolution speed information and fairly coarse position information.Learn More