Magnetic Sensors - Compass, Magnetic Field (Modules)

Image Part Number Description / PDF Quantity Rfq
TLE4964-1M

TLE4964-1M

IR (Infineon Technologies)

TLE4964 - HALL SWITCH

16295

TLE4998P3C

TLE4998P3C

IR (Infineon Technologies)

TLE4998 - PROGRAMMABLE LINEAR HA

0

TLE4961-4M

TLE4961-4M

IR (Infineon Technologies)

TLE4961 - HALL SWITCH

447

TLE4961-3M

TLE4961-3M

IR (Infineon Technologies)

TLE4961 - HALL SWITCH

479

TLV4961-1TB

TLV4961-1TB

IR (Infineon Technologies)

TLV4961 - HALL SWITCH

1963

TLV4961-1M

TLV4961-1M

IR (Infineon Technologies)

TLV4961 - HALL SWITCH

9000

TLE4906L

TLE4906L

IR (Infineon Technologies)

TLE4906 - HALL SWITCH

303

TLE4961-1K

TLE4961-1K

IR (Infineon Technologies)

TLE4961 - HALL SWITCH

163007

TLE4961-3K

TLE4961-3K

IR (Infineon Technologies)

TLE4961 - HALL SWITCH

339000

TLE4927CE6547

TLE4927CE6547

IR (Infineon Technologies)

TLE4927 - MAGNETIC SPEED SENSOR

99

TLV4961-3M

TLV4961-3M

IR (Infineon Technologies)

TLV4961 - HALL SWITCH

180000

TLE4998P4

TLE4998P4

IR (Infineon Technologies)

TLE4998 - PROGRAMMABLE LINEAR HA

1790

TLE4953

TLE4953

IR (Infineon Technologies)

HALL EFFECT SENSOR

8018

TLE4998S3C

TLE4998S3C

IR (Infineon Technologies)

TLE4998 - PROGRAMMABLE LINEAR HA

19063

TLE4953C

TLE4953C

IR (Infineon Technologies)

HALL EFFECT SENSOR

0

TLE4941C

TLE4941C

IR (Infineon Technologies)

HALL EFFECT SENSOR

130

TLE4942-1C

TLE4942-1C

IR (Infineon Technologies)

TLE4942 - MAGNETIC SPEED SENSOR

0

Magnetic Sensors - Compass, Magnetic Field (Modules)

1. Overview

Magnetic sensors/modules detect and measure magnetic fields, providing critical data for navigation, positioning, and electromagnetic environment monitoring. Compass modules specifically determine directional orientation relative to Earth's magnetic field, while general magnetic field modules quantify field strength and variations. These devices are fundamental in applications ranging from consumer electronics to industrial automation and aerospace systems.

2. Major Types & Functional Classification

TypeFunctional CharacteristicsApplication Examples
Hall Effect SensorsMeasure DC/AC magnetic fields via voltage generation across a conductorCurrent sensing, position detection
Anisotropic Magnetoresistive (AMR) SensorsHigh sensitivity to weak magnetic fields (<1 T), low power consumptionElectronic compasses, pedestrian navigation
Fluxgate SensorsHigh precision for AC fields, excellent stabilityGeophysical surveys, submarine detection
Magnetoresistive (GMR/TMR) SensorsNano-scale sensitivity (nT levels), wide dynamic rangeHard disk drives, biomedical devices

3. Structure & Components

Typical modules integrate: (1) Sensing element (Hall plate/AMR bridge/GMR multilayers), (2) Signal conditioning ASIC (amplification/filtering), (3) Temperature compensation circuitry, (4) Digital interface (I2C/SPI). Advanced packages incorporate 3-axis sensing and embedded calibration memory. Hermetic sealing with non-magnetic alloys ensures environmental durability.

4. Key Technical Specifications

ParameterDescriptionImportance
Field RangeMeasurement capability ( 25 T to 100mT)Determines application suitability
SensitivitymV/ T or T/LSBResolution for weak field detection
Non-LinearityDeviation from ideal response (<0.1%)Accuracy assurance
Operating Temperature-40 C to +125 CEnvironmental reliability
Current Consumption100 A - 10mABattery life consideration

5. Application Fields

  • Consumer Electronics: Smartphone compasses (e.g., Apple iPhone 14), AR headsets
  • Automotive: Electric vehicle battery management, ADAS heading detection
  • Industrial: Non-destructive testing, magnetic field mapping
  • Aerospace: Aircraft attitude control, satellite attitude determination

6. Leading Manufacturers & Products

ManufacturerRepresentative ProductKey Specifications
HoneywellHMC63522 T resolution, 8Oe range, I2C interface
InfineonTLE5012B360 angle measurement, 0.1 accuracy
STMicroelectronicsLSM303DLHC3D compass, 16-bit output, 0.1 T sensitivity
Bosch SensortecBMC150Ultra-low power, 0.1 T/LSB resolution

7. Selection Recommendations

Key considerations: (1) Match field range to application (e.g., geomagnetic ~50 T vs. motor monitoring ~10mT), (2) Environmental factors (vibration/shock resistance), (3) Interface compatibility (analog/digital), (4) Calibration requirements, (5) Cost vs. performance trade-offs.

Industry Trends

Future developments focus on: (1) MEMS-based magnetic sensors with sub- T resolution, (2) Integrated IMU (Inertial Measurement Units) with magnetometers, (3) Energy-harvesting magnetic sensors, (4) AI-enhanced noise cancellation algorithms, (5) Standardization of wireless magnetic sensor networks.

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