TMR digital magnetic sensor

Small, sensitive TMR digital magnetic sensor

Using proven TMR (Tunneling Magnetoresistance) technology, the high-performance RedRock™ RR121 TMR digital logic sensors from Coto Technology offer high magnetic sensitivity with high hysteresis, EMF resistance, and a small package size, all while consuming almost NO POWER! These sensor devices offer multiple configurations of several parameters to enable applications like proximity sensing, rotary sensing, and level detection.

The RR121 features available operate sensitivities from 9G to 100G, and either omnipolar, unipolar, or bipolar magnetic field response. It has a  very low average current drain (190nA) for an active magnetic sensor, as well as operating frequencies up to 10kHz and high operating temperature ranges from -40°C up to 125°C.

Key features
  • Operate sensitivity from 9G to 70G
  • Lowest average current <200nA
  • Omni- and bipolar latching responses available
  • Operating frequencies up to 10kHz
  • Available in SOT-23-3 and LGA-4 package
  • Temperature range: -40° to 125°C
  • RoHS & REACH compliant

  • Proximity detection
  • Rotary sensing
  • Fluid level detection
  • Utility meters
  • Portable medical devices
  • Motor controllers
  • Consumer electronics

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