Magnetic Sensors - Linear, Compass (ICs)

Image Part Number Description / PDF Quantity Rfq
A31102LLUBTR-DDLN500

A31102LLUBTR-DDLN500

Allegro MicroSystems

LOW NOISE, ASIL D COMPLIANT (PEN

0

AAK001-14E

AAK001-14E

NVE Corporation

SENSOR MR WHEATSTONE BRIDGE

836

A1367LKTTN-2U-T

A1367LKTTN-2U-T

Allegro MicroSystems

SENSOR HALL EFFECT ANALOG 4SIP

0

A1315LUATN-5-T

A1315LUATN-5-T

Allegro MicroSystems

LINEAR HALL SENSOR

0

RR142-1B12-545

RR142-1B12-545

Coto Technology

TMR DUAL WAKE UP SENSOR OMNI/30/

0

HAL300 SF-K

HAL300 SF-K

TDK Micronas

SENSOR HALL OPEN DRAIN SOT89B

0

TLE5027CE6747HAMA1

TLE5027CE6747HAMA1

IR (Infineon Technologies)

MAGNETIC SPEED SENSORS

2784

TLE5027CXAAD47AGXAMA1

TLE5027CXAAD47AGXAMA1

IR (Infineon Technologies)

MAGNETIC SPEED SENSORS

7500

TLE4983CSF47NHAMA1

TLE4983CSF47NHAMA1

IR (Infineon Technologies)

PROGRAMMABLE MONO-CELL CHOPPED H

26940

TLE50461ICAKLRXAMA1

TLE50461ICAKLRXAMA1

IR (Infineon Technologies)

SPEED SENSORS

0

HAR2455GP

HAR2455GP

TDK Micronas

TSSOP14

0

MLX90251LVA-FAA-100-SP

MLX90251LVA-FAA-100-SP

Melexis

SENSOR HALL EFFECT ANALOG 4SIP

0

HAL320UA-K

HAL320UA-K

TDK Micronas

SENSOR HALL OPEN DRAIN TO92-UA

0

HAL1822UA-A

HAL1822UA-A

TDK Micronas

SENSOR HALL EFFECT ANALOG TO92

0

A1308LUATN-2-T

A1308LUATN-2-T

Allegro MicroSystems

LINEAR HALL SENSOR

0

SS495B

SS495B

Honeywell Sensing and Productivity Solutions

SENSOR HALL ANALOG RADIAL LEAD

0

TLE4983CWSF47QHAMA1

TLE4983CWSF47QHAMA1

IR (Infineon Technologies)

TLE4983C - PROGRAMMABLE MONO-CEL

46340

TLE5046ICPWM2ER100HALA1

TLE5046ICPWM2ER100HALA1

IR (Infineon Technologies)

SPEED SENSORS

0

HAC3725UF-A

HAC3725UF-A

TDK Micronas

TO92-UF

0

TLE5027CXAAD47AIHAMA1

TLE5027CXAAD47AIHAMA1

IR (Infineon Technologies)

MAGNETIC SPEED SENSORS

33000

Magnetic Sensors - Linear, Compass (ICs)

1. Overview

Magnetic sensors - linear compass ICs are semiconductor devices that detect magnetic fields and convert them into electrical signals. These integrated circuits provide precise measurement of magnetic field direction and strength in linear axes, enabling 2D/3D orientation detection. Their importance spans multiple industries due to their ability to provide contactless position sensing, navigation capabilities, and magnetic field monitoring in compact form factors.

2. Main Types & Functional Classification

Type Functional Features Application Examples
Hall Effect Sensors Voltage output proportional to magnetic field strength, simple design Current sensing, proximity detection
Anisotropic Magnetoresistance (AMR) Sensors High sensitivity (0.1 accuracy), low power consumption Electronic compasses, navigation systems
Giant Magnetoresistance (GMR) Sensors Ultra-high sensitivity (nanotesla range), wide bandwidth Biomedical devices, industrial position control
Tunneling Magnetoresistance (TMR) Sensors Lowest power consumption, excellent thermal stability IoT devices, automotive safety systems

3. Structure & Composition

Typical construction includes: - Sensing element (Hall plate/AMR film/TMR junction) - Signal conditioning circuitry (amplifiers, ADCs) - Temperature compensation modules - Digital interface (I2C/SPI) Packaged in LGA/QFN formats (2-8mm sizes) with magnetic shielding layers. Advanced versions integrate sensor fusion algorithms for 3-axis measurement.

4. Key Technical Specifications

Parameter Description & Importance
Sensitivity (mV/Gauss) Determines minimum detectable field strength
Resolution ( T/LSB) Affects angle measurement precision (critical for navigation)
Operating Temperature (-40 to +125 C) Defines environmental suitability
Power Consumption ( A/mA) Crucial for battery-powered devices
Interface Type I2C/SPI for digital output, analog for raw signals

5. Application Fields

Main industries include: - Consumer Electronics: Smartphone compasses, AR/VR headsets - Automotive: EPS systems, vehicle detection - Industrial: Robotics, CNC machine tool positioning - Aerospace: Drone stabilization systems - Medical: Surgical tool tracking

6. Leading Manufacturers & Products

Manufacturer Product Series Key Specifications
STMicroelectronics LIS3MDL 50 Gauss range, 0.08 T/LSB, I2C/SPI
Honeywell HMC5883L 80 Hz bandwidth, 2-4 Gauss accuracy
NXP Semiconductors MFX7755 3D sensing, 0.1 heading accuracy
TDK-InvenSense ICM-20948 9-axis MEMS+mag, 0.15 mA operating current

7. Selection Guidelines

Key consideration factors: - Required measurement axis (2D vs 3D) - Environmental conditions (temperature, vibration) - Power budget constraints - Required accuracy vs cost trade-offs - Interface compatibility with host system - Calibration requirements (hard/soft iron compensation)

8. Industry Trends

Current development directions: - Integration with MEMS IMUs for sensor fusion - AI-based self-calibration algorithms - Sub-10 A ultra-low power consumption - Increased radiation hardness for space applications - Development of 4D magnetic field-time sensors

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