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High Linearity/High Resolution Contactless Current Sensor

CT220

CT220: High Linearity/High Resolution Contactless Current Sensor Product Image

CT220 ECAD Model
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Description

Top Features

Typical Applications

Packaging

The CT220 is a high linearity and high-resolution contactless current sensor from Allegro MicroSystems developed on its patented XtremeSense™ TMR technology with the capability of measuring up to 1,000 A. It measures the magnetic field of the current flowing through a busbar or printed circuit board (PCB) trace and converts it to an analog output voltage that represents the field and therefore current.

The CT220 is an ideal contactless current sensing solution for applications that need to have excellent isolation and accurate current measurements. There are four (4) variants of the CT220 that will sense the following magnetic fields: ±1.5 mT, ±5.0 mT, ±10.0 mT and ±15.0 mT.

  • AC or DC Contactless Current Sensing Range: Up to 1,000 A
  • Resolution of 5 mA
  • Inherently High Isolation
  • Magnetic Field (Current) Range:
    • ±1.5 mT
    • ±5.0 mT
    • ±10.0 mT
    • ±15.0 mT
  • Stable Performance over Temperature
  • Supply Current: ~1.2 mA
  • FLAG Pin to Indicate 90% and 10% of Full Field Range
    • Active LOW Digital Output (Push-pull)
  • Supply Voltage: 2.7 V to 5.5 V
  • Operating Temperature Ranges:
    • Industrial: -40°C to +85°C
    • Extended Industrial: -40°C to +125°C
  • Package: 5-Lead SOT23

The CT220 is available in an industry standard 5-lead SOT23-5 package.

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Part Number Specifications and Availability

Documentation and Resources

Documentation

Filter Document Type:
All Types
All Types Application Note
Documents Found: 32
Document Type Document Name
Application Note
CT220 Reference Design for Contactless Current Sensing
Application Note
Calibration Guide for CT110, CT220 and CT450
Application Note
Reducing the Influence of External Fields and Crosstalk for Contactless Current Sensing