What is Magnetic Sensor : Top Manufacturers & Vendors
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A magnetic sensor is an electronic device that detects and measures magnetic fields, magnetic flux density, or changes in magnetic position. These sensors are widely used in automotive systems, industrial automation, consumer electronics, medical devices, navigation equipment and smart sensing applications requiring accurate position, speed, or proximity detection.
About Magnetic Sensors:
A magnetic sensor is a device that detects magnetic fields. When selecting a magnetic sensor, consider the following technical specifications:
- Sensitivity or Transfer: (V/T or V/A·m, A/T, Hz/T…) - How much the output changes for a given change in magnetic field.
- Absolute Accuracy: The overall accuracy of the sensor’s readings.
- Power Spectral Noise Density: (in T²/Hz) - The noise level of the sensor.
- Bandwidth: The range of frequencies the sensor can accurately measure.
- Operating Temperature: The temperature range in which the sensor functions correctly.
- Full Scale: The maximum range of magnetic field the sensor can measure.
- Dynamic Range: (dB) - The ratio between the largest and smallest magnetic fields the sensor can measure.
- Slew Rate: (T/s) - How quickly the sensor can respond to changes in the magnetic field.
- Distortion vs. Frequency: (%) - How much the sensor distorts the signal at different frequencies.
- Linearity Error: (%FS) - The deviation from a perfectly linear response across the full scale.
- Resolution: The smallest change in magnetic field the sensor can detect.
Magnetic Sensor Vendors and Manufacturers
| Vendor/Manufacturer | Part Number(s) | Description |
|---|---|---|
| NXP Semiconductor | MAG3110 | Magnetometer |
| Infineon | TLV493D-A1B6 | |
| Fargo Controls | N/A | Offers proximity sensors of magnetic, inductive, and capacitive types. |
| MEMSIC | MMC328xMA, MMC3316xMT | 3-axis magnetic sensors |
| TI | DRV421 | Magnetic current sensor |
| Vernier | N/A | Manufactures magnetic field sensors. |
| SICK | N/A | Magnetic proximity sensors based on the magnetic sensing principle. |
| Phoenix America | N/A | Offers magnetic sensors and magnetic encoders. |
| Littelfuse, USA | N/A | Leader in magnetic sensing solutions, providing reed sensors, reed switches, Hall effect sensors, and reed relays. |
| TE Connectivity | KMT32B | Magnetic field sensor |
| Murata Manufacturing Co. Ltd. | N/A | AMR Sensors or Magnetic Sensors |
| Red Lion, USA | MP75TX | |
| Analog Devices | AD22151 |
Summary
A magnetic sensor detects magnetic fields and converts them into electrical signals for measurement and control applications. Leading manufacturers provide magnetic sensors for automotive, industrial, consumer, healthcare, and IoT systems.
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