Angular sensor has extreme precision thanks to TMR technology

December 05, 2018 // By Christoph Hammerschmidt
Crocus Technology (Santa Clara, Calif), developer of sensors in disruptive Tunnel Magneto-Resistance (TMR) technology, has introduced the CT300 device, an angular (2D) magnetic sensor with an extremely low angular error and high stability over a wide temperature and voltage ranges to address a variety of markets.

The CT300 is designed using Crocus’s proprietary Magnetic Logic Unit (MLU) technology and consists of two full-bridge magnetic resistor networks capable of two-dimensional sensing. In the presence of a rotating magnetic field, the CT300 senses the field and produces two sets of differential signals representing the sine (SIN) and cosine (COS) waveforms. Once the differential signals of the CT300 are processed and compensated, the resulting angular error will be at or below 0.5° over a temperature range of -40°C to +150°C. A single CT300 can measure the absolute angle resulting from a full 360° rotation and can sense magnetic fields ranging from 20 mT to 80 mT.

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