Crocus Technology CT41x XtremeSense® TMR Current Sensors

Crocus Technology CT41x XtremeSense® TMR Current Sensors

Crocus Technology CT41x XtremeSense® TMR Current Sensors are high bandwidth and ultra-low-noise integrated contact current sensors utilizing the patented XtremeSense® TMR technology. The technology enables high accuracy current measurements for many consumer, enterprise, and industrial applications. These components support eight current ranges where the integrated current-carrying conductor (CCC) will handle up to 65A of current and generates a current measurement as a linear analog output voltage. The 8-lead SOIC packaged CT41x sensors achieve a total output error of about ±1.0% full-scale (FS), a 300ns output response time, and a 6.0mA current consumption. A filter function reduces the noise on the output pin.


  • Integrated contact sensing for low-to-medium current ranges
    • 0 to +20A
    • -20A to +20A
    • 0 to +30A
    • -30A to +30A
    • 0 to +50A
    • -50A to +50A
    • 0 to +65A
    • -65A to +65A
  • Integrated current-carrying conductor (CCC)
  • Linear analog output voltage
  • ±1.0% FS total error output
  • 1MHz bandwidth
  • 300ns response time
  • -40°C to +125°C operating temperature range
  • UL/IEC 62387 certification
    • >2.5kVRMS rated isolation voltage
    • >701VRMS working voltage for basic isolation
    • >344VRMS working voltage for reinforced isolation
  • IEC 61000-4-5 certification
  • Low 9.0mARMS to 19.0mARMS noise at fBW = 100kHz
  • Supply voltages
    • 4.75V to 5.50V for the CT415 and CT418
    • 3.0V to 3.6V for the CT416 and CT417
  • Filter function to reduce noise on the output pin
  • -40dB immunity to common-mode fields
  • AEC-Q100 Grade 1 (under qualification)
  • 8-lead SOIC package
  • RoHS compliant

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