Smart Magnetic Sensors - Rhopoint Components

NVE SM225-10E

Admin — Mon, 23 Nov 2020 21:02:21 +0000

The SM225-10E smart magnetometer from NVE is designed to provide precise magnetic field measurements, detecting magnets even over 50mm away. The sensors combine precise Tunneling
Magnetoresistance (TMR) sensor elements with easy-to-use
digital signal processing, Unlike awkward, old-fashioned Hall-effect sensors, TMR is
sensitive in-plane for optimal current sensing and easy
mechanical interfaces. TMR also provides more sensitivity,
higher precision (2%), higher speed (15kSps), and lower noise than Hall. This magnetometer is a digital device with a 4-wire SPI interface, providing magnetic field data and a way to set parameters such as thresholds. The SM225-10E sensor comes factory calibrated to high accuracy, with the calibration coefficients stored in internal non-volatile memory and is available in ultra-miniature TDFN6 packaging (2.5 x 2.5mm footprint).

Smart TMR Magnetometer
Wide 0 to 15 mT/0 to 150 Oe linear range
10 bit output resolution
2% FS accuracy for 0 to 125 °C
15kSps sample rate for fast response
Temperature range of −40°C to +125°C
2.2V to 3.6V supply
3.3V or 5V compatible 4-wire SPI interface
Analog field measurements plus on/off digital output
In-plane sensitivity
Ultraminiature 2.5mm x 2.5mm TDFN6 package

Typical applications for the SM225-10E series include:

Proximity sensing
Current sensing
Security and intrusion detection
Automotive applications
Cylinder position sensing

The below table gives the full specifications of the NVE -10E smart TMR magnetometer:

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NVE ASR002-10E

Admin — Mon, 23 Nov 2020 20:54:09 +0000

The ASR002-10E smart TMR angle sensor from NVE is designed to provide a precise digital angle measurements over a wide range of speeds utilising the low power Tunneling Magnetoresistance (TMR) sensing elements combined with sophisticated digital signal processing. This sensor features a robust operating range of 60 Oe to 200 Oe and sensitivity of 3 to 4.2mV/V-Oe. The ASR002-10E is able to measure rotational speeds of up to 375,000rpm and is compatible with 3V and 5V four-wire SPI interfaces to provide angle data and allow setting device parameters. This sensors comes in ultraminiature TDFN6 package (only 2.5×2.5×0.8mm) and is fully factory calibrated.

Smart TMR non-contact angle sensor
Measures rotational speeds up to 375000rpm
Operating range of 60 Oe to 200 Oe
0.1° resolution
±0.2° repeatability
Temperature range of −40°C to +125°C
Sample rate of 12.5kSps
Supply range between 2.2V and 3.6V
Low typical supply current at 4mA
Ultraminiature TDFN6 package

ASR002 sensors use unique TMR sensor elements that are inherently high speed and low noise. The digital core calculates the angle from sensor element Sine and Cosine vectors, and the raw sensor data are available from separate memory locations. The sensor output utilises a 12-bit ADC with the extra bits ensuring precision and computational accuracy. Digital filter is available for ultralow noise in high-frequency operations (this option is turned-off as default).

Visit Video section in the Technical Library to watch a demo of this product

Typical applications for the ASR002 series include:

Rotary encoders
Robotics
Motor control
Automotive applications
Internet of Things (IoT) end nodes

The below table gives the full specifications of the NVE ASR002-10E smart TMR angle sensor:

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NVE SM124-10E

Admin — Mon, 23 Nov 2020 20:54:09 +0000

The SM124-10E smart magnetometer from NVE is designed to provide precise magnetic field measurements, detecting magnets even over 50mm away. It utilises Giant Magnetoresonance (GMR) technology, which is superior compared to the traditional Hall effect devices in terms of sensitivity (0-10 Oe / 0-1 mT linear range), precision (5% accuracy), speed (10kSps sample rate) and noise levels. This magnetometer is a digital device with minimal firmware requirements – it features programmable thresholds, offset and other values and magnetic field and calibration data from I²C interface with the calibration coefficients stored in a non-volatile memory. The SM124-10E comes factory calibrated to high accuracy and is available in ultraminiature TDFN6 package (2.5×2.5mm footprint).

Smart GMR Magnetometer
High sensitivity of 0-10 Oe / 0-1 mT linear range
8bit / 1% output resolution
Accuracy of 5% of the full scale
10kSps sample rate for fast response
Temperature range of −40°C to +125°C
2.2V to 3.6V supply
3.3V or 5V compatible I²C interface
Programmable features include offset and gain correction, I²C address and thresholds
Easy to use digital signal processing
Ultraminiature TDFN6 package

Typical applications for the SM124-10E series include:

Proximity sensing
Current sensing
Security and intrusion detection
Automotive applications
Cylinder position sensing

The below table gives the full specifications of the NVE SM124-10E smart GMR magnetometer:

The post NVE SM124-10E appeared first on Rhopoint Components.

NVE SM324-10E

Admin — Mon, 23 Nov 2020 20:54:09 +0000

The SM324-10E smart magnetometer from NVE is designed to provide ultra-precise magnetic field measurements while detecting magnets even over 50mm away. It utilises Tunneling Magnetoresonance (TMR) technology, which is superior compared to the traditional Hall-effect devices in terms of in-plane sensitivity, precision (±0.3% accuracy), speed (300 samples per second) and noise levels. The I²C interface works as data as well as programming interface; the programmable values include magnetic thresholds, sensor offset, temperature values, user-defined memory and other values. The digital signal also allows for application-specific calibration; the calibration coefficient is stored in internal non-volatile memory. The SM324-10E is capable of withstanding harsh environments, including those in automotive applications, due to their robust ESD protection, and is available in ultraminiature TDFN6 package (2.5×2.5mm footprint).

Smart TMR Magnetometer
Magnetic field operating range of 0 to ±20 Oe
24bit output resolution
Accuracy as low as ±0.3% at 25° (±1% across the temperature range)
Sample rate of 300 samples per second
Temperature range of −40°C to +125°C
1.68V to 3.6V supply
Programmable features include offset and gain correction, I²C address and thresholds
Sophisticated digital signal processing
Ultraminiature TDFN6 package

Typical applications for the SM324-10E series include:

Proximity sensing
Noncontact current sensing
Robotics
Automotive applications
Internet of Things (IoT) end nodes

The below table gives the full specifications of the NVE SM324-10E smart TMR magnetometer:

The post NVE SM324-10E appeared first on Rhopoint Components.