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CT42x : 1 MHz, High Precision XtremeSense® TMR Isolated Current Sensor in SOIC-8 package

The CT42x family is a high bandwidth, fast response and ultra-low noise integrated contact current sensors that use Crocus Technology’s patented XtremeSense® TMR technology to enable high accuracy current measurements for many consumer, enterprise, and industrial applications. It supports six (6) current ranges where the integrated current carrying conductor (CCC) will handle up to 65 A of current and generates a current measurement as a linear analog output voltage. It achieves a total output error of less than ±1.0% full-scale (FS) over voltage and the full temperature range.

The CT42x family is offered in an industry standard 8-lead SOIC package that is “green” and RoHS compliant.

Product features and performance:

  • CT425 & CT428 (5.0 V version), CT426 & CT427 (3.3 V version)
  • Integrated 0.5 mΩ Conductor
  • Total Error Output ±0.5% (typ.)
  • 300 ns Response Time, 1 MHz Bandwidth
  • Noise as Low as 9 mARMS
  • Immunity to Common Mode Field: -54 dB
  • Rated Isolation Voltage: >4 kVRMS
  • UL/IEC 62387 and UL1577 Certified
  • IEC 61000-4-5 Certified
  • AC or DC Current Range:
    • +20.0 ADC / ±20.0 APK
    • +30.0 ADC / ±30.0 APK
    • +65.0 ADC / ±65.0 APK
  • Pin #6 Functionality
    • CT427 & CT248: Over-Current Detection Output Pin
    • CT425 & CT426: Enhanced Filter to Lower Noise

PRODUCT BRIEF

APPLICATION NOTES

SAMPLES & EVALUATION BOARDS

Applications

Solar/Power Inverters

Smart Appliances

Motors & Generators

UPS, SMPS and Telecom Power

Battery Management

Power Utility