Good day everyone, I am a new face in the world of Arduino (and electronics) and I wanted to try my luck with an Allegro A magnetic. Northeast Cutoff, Box Allegro MicroSystems, Inc. Continuous-Time Ratiometric Linear Hall Effect Sensors. A and A Datasheets, A, Product AKUAT; Allegro MicroSystems, LLC; IC LINEAR HALL SENSOR 3SIP; Unit Price $; ND. LTR.

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In reality, after modifying the sketch and adding an allero variable to read an unused slot, Alegro realized that the results were similar in nature. Date of status change: Ambient Temperature Device Sensitivity vs.

However, Allegro MicroSystems, Inc. Integrating the Hall sensing element and the amplifier on a single chip minimizes many of the problems normally associated with low voltage level analog signals.

The on-chip output stage is designed to provide linear output at a supply voltage of 5 V.

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A and A Datasheet. Two output sensitivity options are provided: Sale of this device is currently restricted to existing customer applications.

In the quiescent state no significant magnetic field: Because I get the same results when I “read” a3101 an empty slot and the slot with the sensor, is it possible that my sensor is broken? Please contact the Allegro Marketing department for additional information. My goal is to make a device that can be used to sense some metal approaching it.

If this is not aolegro local representative, find your local sales rep here. Therefore I would like to ask the kind forum members the following questions: Note that some of these devices need a load resistor on the output pin plus decoupling Vcc to GND They are pretty resistant to abuse getting it wired up incorrectlyallero will only take so much.


High precision in output levels is obtained by internal gain and offset trim adjustments made at end-of-line during the manufacturing process.

A1301 and A1302: Continuous-Time Ratiometric Linear Hall Effect Sensor ICs

The device should not be purchased for new design applications because of obsolescence in the near future. Is there another way to wire the sensor? Linearity in percent is measured and defined as: For the latest version of this document, visit our website: The Allegro site suggests that this is an end of life device, so maybe not the best choice. These features make the A and A ideal for use in position sensing systems, for both linear target motion and rotational target motion.

Allegro are generally pretty good at application notes, so I would start there, before even starting with code. Conversely, the application of a north polarity —B magnetic field, in the same orientation, proportionally decreases the output voltage from its quiescent value. Two device package types are available: I assumed that the differences were determined by me approaching and retracting the Neodymium magnet from the sensor.

Although the application of very high magnetic fields does not damage these devices, it does force their output into a nonlinear region.

If yes, how can I test to find it out? Hall effect “switching” devices provide a digital output depending on the strength of the magnetic field. What do you mean by “slot”? Do I have to process the raw data in order to get some better results? You say you want to detect “metal” then talk about “magnets” This device gives an output relative to a magnetic field, so a lump of aluminium isn’t going to do much.


Just a quick look at the spec suggests that the output is analogue, so digital read may not be much good – I would expect this device to give a voltage output on the output pin, so analogue read would be more appropriate.

Hello I think you need to go back to the basics Have you looked at the data sheet for this device? Does a magnetic sensor “feel” fluctuations caused by approaching a metal piece to it?

Low-noise output Fast power-on time Ratiometric rail-to-rail output 4. Before placing an order, the user is cautioned to verify that the information being relied upon is current. Thank you and have a allefro week ahead! Integrating the Hall circuit and the amplifier on aa1301 single chip minimizes many of the problems normally associated with low voltage level analog signals.

Thereafter I wrote a sketch which checks whether there are voltage fluctuations in the sensor using the digitalread function and then a1031 the results in the console when I approach a Neodymium magnet towards it. We’ll notify you when there are updates to this product. Low-noise output Fast power-on time Ratiometric rail-to-rail output 4. Units — — 4. This classification indicates that the product is obsolete and notice has been given.

I think your best bet is to decide a11301 you really want to achieve – metal or magnet, choose a different device like the recommended A replacement.

My results show me random numbers varying from to which repeat at regular intervals. They are optimized to accurately provide a voltage output that is proportional to an applied magnetic field.