The RM3000 Geomagnetic Sensor: Best-in-class magnetic field sensing with no hysteresis, temperature drift or resetting — and the lowest power needs on the market.

The highest precision sensor in its class, PNI’s RM3000 geomagnetic sensor delivers high-performance resolution and repeatability with extremely low noise. The RM3000 provides high gain, a wide field measurement range, superior noise immunity, no hysteresis, and is extremely stable over temperature, with the lowest power consumption in the industry.
Enables Unprecedented Tracking and Pointing Accuracy in 3D
The RM3000 geomagnetic sensor is designed to enable 3D applications, and is ideal for use in video-game controllers, solid-state navigation devices, and handheld devices with integrated compassing functions. The RM3000 comprises three sensor coils driven by PNI’s 3D MagIC ASIC. The interface to the 3D MagIC ASIC is through an SPI bus, eliminating the need for signal conditioning or an analog/digital converter.
Unlike magneto-resistive sensors, PNI's magneto-inductive sensors do not require temperature calibration or high current set-and-reset pulses before each measurement. Hence, they are simple to design in, and the peak current requirement is dramatically reduced. It isn’t surprising this patented technology has been proven across a wide spectrum of applications, including motion tracking, compassing, video-game control, TV and set-top box controls, and magnetic field measurement.
The RM3000 Evaluation Board is available for design and prototyping for high-volume applications, as well as for research, education and hobby use. This board integrates PNI's geomagnetic sensors and 3D MagIC onto a single PCB.
Product Availability
- The RM3000 enables unparalleled performance in 3D applications, and comprises two Sen-XY sensors and one Sen-Z sensor, plus the 3D MagIC ASIC controller.
- The RM3000 Evaluation Board incorporates PNI's RM3000 with peripheral components on a single PCB. It is ideal for prototyping applications such as video game controllers and TV remote-control devices that require high refresh rates and high magnetic sensor resolution. The SPI interface allows direct interface to a microprocessor, eliminating the need for additional signal processing. For 2D applications, the third axis can simply be turned off.
RM3000 Specs
Features
Large Field Measurement Range
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Low Noise
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| ± 800 µT |
30 nT typical at 200 cycle counts |
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Wide Temperature Range
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Minimal External Components |
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-40° to 85° C (operational) |
RoHs Compliant |
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Surface Mount Package
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Low Power Consumption |
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| Supplied on tape and reel |
Draws 0.25 mA at 35 Hz and 200 cycle counts |
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Sensor Specs1
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Parameter |
Min. |
Typical |
Max. |
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Field Measurement Range |
-8 Gauss |
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+8 Gauss |
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Gain at 200 cycle counts2 |
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45 counts/ μT |
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Linearity over ±200 μT |
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0.6% |
1.0 |
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Noise at 200 cycle counts2 |
30 nT |
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Data Rate at 200 cycle counts2,3 |
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150 Hz |
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DC Supply Voltage |
1.6 V |
3.3 V |
3.6 V |
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Average Current at 12 Hz and 200 cycle counts) |
0.25 mA |
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DC Resistance vs Temperature |
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0.4%/C |
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Temperature Range |
Operation |
–40˚C |
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85˚C |
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Size (l x w x h) |
Sen-XY Sen-Z p/n 13070 Sen-Z p/n 13101 3DMagIC |
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6.0 x 2.1 x 2.2 mm 3.0 x 3.0 x 5.75 mm 3.9 x 3.0 x 6.35 mm 5.0 x 5.0 x 0.9 mm |
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1 Specifications subject to change.
2 The cycle count is a user-specified variable. Higher cycle counts increase gain, measure time, power consumption, and lower noise. See the user manual for more information.
3 Assures measurement is taken on all three axes. Single-axis data rate and current at 200 cycle counts are 450 Hz and 0.08 mA, respectively.
Contact PNI
To find out how you can integrate the RM3000 geomagnetic sensor into your hardware, or for pricing and technical information, contact PNI at any one of our offices worldwide.
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