What is the Additional Feature ?

Name: A3212ELHLT-T
Brand: Allegro MicroSystems
SKU: A3212ELHLT-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Allegro MicroSystems A3212ELHLT-T

Part No.:: A3212ELHLT-T

Manufacturer:: Allegro MicroSystems

Package:: SOT-23W

Datasheet:: A3212ELHLT-T.pdf

Description:: MAGNETIC SWITCH OMNIPOLAR SOT23W

In Stock:: 3547

Quantity:: Add To Cart

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A3212ELHLT-T Typical application Circuitry

A3212ELHLT-T

A3212ELHLT-T is a Hall Effect sensor designed for precise detection of magnetic field direction and strength. This type of sensor is widely used in automotive electronics, industrial automation, consumer electronics, and mobile devices due to its high sensitivity and low power consumption features.

Application Scenario:

The A3212ELHLT-T is commonly used in non-contact switch applications, such as sensing magnetic door locks in access control systems, enabling doors to be controlled without physical contact. In this application, the A3212ELHLT-T can detect the proximity of a magnet, thereby triggering a circuit switch.

Parameter Features:

The A3212ELHLT-T boasts several key parameter features, including its low supply voltage requirement (typically between 3.3V to 5V), low current consumption (usually in the microampere range), and high sensitivity, capable of detecting subtle changes in magnetic fields.

Detailed Circuit Connection Explanation:

- Power Supply and Grounding: First, connect the VCC pin of the A3212ELHLT-T to a 3.3V power source, and connect the GND pin to ground. This provides the sensor with its basic power requirements.

- Output Signal Processing: The output pin (OUT) of the A3212ELHLT-T should be connected to a digital input pin of a microcontroller (such as an Arduino or Raspberry Pi). When a magnetic field is detected, the OUT pin outputs a high level; otherwise, it outputs a low level.

- Magnetic Field Detection Adjustment: Approach the A3212ELHLT-T with a magnet and observe the change in the level of the microcontroller's input pin connected to the OUT pin, to verify the functionality of magnetic field detection.

- Feedback Signal: Based on the output signal from the A3212ELHLT-T, the microcontroller can control the opening and closing of the door lock, for example, by driving a relay or other switching component to control the physical lock.

Considerations When Designing the Circuit:

1. Interference Resistance: When designing a circuit that includes the A3212ELHLT-T, it is necessary to consider the impact of electromagnetic interference (EMI) and take appropriate shielding and filtering measures to ensure accurate magnetic field detection.

2. Power Supply Stability: Ensuring the stability of the power supply for the A3212ELHLT-T is crucial for the normal operation of the sensor. A regulated power source should be used, and the length and thickness of the power lines should be considered to avoid problems caused by voltage drop.

3. Environmental Adaptability: Considering the A3212ELHLT-T may be used in various environments, it is necessary to ensure that the sensor and its circuit can adapt to different temperature and humidity conditions.

4. Output Signal Processing: The choice and programming of the microcontroller need to consider how to process the output signal from the A3212ELHLT-T, ensuring accurate response to changes in the magnetic field.

By thoroughly considering the above design points, the potential of A3212ELHLT-T in non-contact switch applications can be effectively utilized, achieving an efficient and reliable magnetic field detection scheme.

A3212ELHLT-T information

A3212ELHLT-T Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®,Bulk
Series:
-
ProductStatus:
Active
Function:
Omnipolar Switch
Technology:
Hall Effect
Polarization:
North Pole, South Pole
SensingRange:
±5.5mT Trip, ±1mT Release
TestCondition:
-40°C ~ 85°C
Voltage-Supply:
2.5V ~ 3.5V
Current-Supply(Max):
2mA
Current-Output(Max):
1mA
OutputType:
Open Drain
Features:
-
OperatingTemperature:
-40°C ~ 85°C (TA)
MountingType:
Surface Mount

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6. What is the process for return or replacement of A3212ELHLT-T?

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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of A3212ELHLT-T.

(3)The PartNo is unused and only in the original unpacked packaging.

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