1 MHz Differential Current Sensor with CMFR Optimized for Motor Control

CT456

1 MHz Bandwidth Contactless Current Sensor Optimized for High dV/dt Applications Product Image

Description

Top Features

Typical Applications

Packaging

The CT456 is a high-bandwidth and low-noise integrated zero-loss contactless current sensor that uses Allegro patented XtremeSense tunnel magnetoresistance (TMR) technology to enable high-accuracy current measurements for many consumer, enterprise, and industrial applications. The device supports a preprogrammed 6mT field range where the CT456 senses and translates the magnetic field into a linear analog output voltage.

This coreless current sensor is not only small in size and simple to incorporate into a design, but it also provides effective common-mode rejection. Thanks to its differential measurement, the CT456 have greater than 90% immunity to stray magnetic fields, which thus have almost no impact on the accuracy of the current measurement.

The CT456 is assembled in a low-profile, industry-standard eight-lead thin-shrink small-outline package (TSSOP) that is green and RoHS compliant.

  • Optimized for high dV/dt applications
  • Integrated Contactless Current/Field Sensor
  • Linear Analog Output Voltage
  • Differential measurements
  • 1 MHz Bandwidth
  • Response Time < 300 ns
  • Very low noise: 0.92mVrms (@100kHz)
  • Supply Voltage: 3.3 V to 5.0 V
  • AEC-Q100 Grade 1
  • Package Options:
    • 8-lead TSSOP

The CT456 is assembled in a very low profile, 8-lead TSSOP package that is both “green” and RoHS compliant.

Part Number Specifications and Availability

Discover the next generation of magnetic sensing

Efficient Power Conversion

Accurately measures the full dynamic range and provides a cleaner signal.

Adoption of Wide Bandgap Transistors

Wide bandgap transistors such as GAN and SiC require high bandwidth current sensors which XtremeSense TMR achieves without sacrificing accuracy and resolution.

Reduce the Energy Footprint

Delivers the lowest power consumption in any magnetic sensing product category.

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.

Learn More

Documentation and Resources

Documentation

Design Tools

Filter Document Type:
All Types
All Types Application Note Brochure Guide
Documents Found: 32
Filter Document Type:
All Types
All Types Third Party Tool
Documents Found: 32
Document Type Document Name
Third Party Tool
CT456 Programming Software