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1 MHz, High Precision XtremeSense TMR Isolated Current Sensor in SOIC-8 Package

CT425, CT426, CT427, CT428

CT42x: 1Mhz, High Precision XtremeSense® TMR Isolated Current Sensor in SOIC-8 Package Product Image

CT425-8 ECAD Model
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Description

Top Features

Typical Applications

Packaging

The CT42x family is a high bandwidth, fast response and ultra-low noise integrated contact current sensors that use Allegro MicroSystems’ patented XtremeSense™ TMR technology to enable high accuracy current measurements for many consumer, enterprise, and industrial applications. It supports eight (8) 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.

  • CT425 & CT428 (5.0 V version), CT426 & CT427 (3.3 V version)
  • Integrated 0.5 mΩ Conductor
  • Total Error Output: ±0.5% FS (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 62368-1 and UL1577 Certification
  • IEC 61000-4-5 Certified
  • AC or DC Current Range:
    • +20.0 ADC / ±20.0 APK
    • +30.0 ADC / ±30.0 APK
    • +50.0 ADC / ±50.0 APK
    • +65.0 ADC / ±65.0 APK
  • Pin #6 Functionality
    • CT427 & CT248: Over-Current Detection Output Pin
    • CT425 & CT426: Enhanced Filter to Lower Noise

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

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Part Number Specifications and Availability

Allegro's XtremeSense™ TMR technology

Superior magnetic sensitivity, low power consumption, and compact size compared to other technologies, driving innovation in applications like renewable energy, electric vehicles, and consumer electronics.

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Documentation and Resources

Documentation

Design Tools

Filter Document Type:
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All Types Application Note Brochure Guide
Documents Found: 32
Document Type Document Name
Application Note
Package Thermal Resistance for Allegro Current Sensors with Integrated Conductors
Application Note
CMTI Comparison for Allegro Integrated Conductor Current Sensors
Application Note
What is XtremeSense TMR
Application Note
Glossary of Isolation-Related Terms for Integrated Current Sensors
Brochure
Comfort Through Sustainability - Unlock the Power of Heat Pump Innovation
Brochure
The Future of Sensing: XtremeSense™ TMR Technology
Brochure
DC Fast Charging: Faster and Farther
Guide
CT427-20AC Evaluation Board User Guide
Guide
CT427-50AC Evaluation Board User Guide
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All Types Webpage
Documents Found: 32
Document Type Document Name
Webpage
Current Sensor Evaluation Boards Page