Digital TMR Latch

CT815x: Integrated Omnipolar TMR Analog Sensor

The CT815x series of Tunnel Magnetoresistance (TMR) analog sensors (with option for digital latch output) are designed for consumer and industrial applications. It is based on Crocus Technology’s patented Magnetic Logic Unit™ (MLU™) technology with integrated CMOS process to provide a monolithic solution for superior sensing performance. Also, the CT815x analog sensors with XtremeSense® performance where it offers stable magnetic operation over temperature.

For applications that require a very small form factor and low profile, the CT815x sensors are assembled in a 4-lead LGA package. The CT8150 is also available in an industry standard 3-lead SOT-23 package while CT8152 is offered in a 5-lead SOT23 package to support high volume manufacturing.


  • Analog Output Mode, Current Consumption: ~3.0 µA
    • Current Consumption in Digital Output Mode: ~120 nA @ VDD = 1.8 V and fS = 12.5 Hz
  • Supply Voltage Range: 1.7 V to 5.5 V
  • Sensor Polarity: Omnipolar
  • Sample and Hold Analog Output @ fS = 100 Hz
  • Dual Analog and Digital Output Operation Capability
    • Digital Output is Push-pull
  • Under-Voltage Lockout (UVLO)
  • Package Options:
    • 3 and 5-Lead SOT23
    • 4-lead LGA, 1.45 x 1.45 x 0.44 mm


  • IoT Devices
  • Smartphones, Tablets and Laptops
  • Battery-operated Electronic Devices
  • Wearable Consumer Electronics
  • Door or Lid Closure
  • Tamper-proofing for Utility Smart Meters
  • Fluid Level Sensing/Detection
  • Gimbals for Camera Systems in Drones/UAVs
  • Proximity Detection
  • Industrial Machinery/Robots
  • Medical Devices

Crocus Technology: Intelligence in Sensing™