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XtremeSense TMR Current Sensor with High dV/dt Immunity, 5kV Isolation and Common-Mode Field Rejection

CT433

CT433: XtremeSense® TMR Current Sensor with High dV/dt Immunity, 5kV Isolation and Common-Mode Field Rejection Product Image

CT433 ECAD Model
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Description

Top Features

Typical Applications

Packaging

The CT433 is a high bandwidth and ultra-low noise integrated contact current sensor that uses Allegro MicroSystems’ patented XtremeSense™ TMR technology to enable high accuracy current measurements for many consumer, enterprise, and industrial applications. It supports multiple current ranges where the integrated current carrying conductor (CCC) will handle up to 70 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 supply voltage and the full temperature range.

It has about a 300 ns output response time while the current consumption is about 6.0 mA and is immune to common mode fields. The CT433 was optimized for high dV/dt applications which minimizes capacitive coupling to VOUT allowing CT433 to be used in switching applications.

The CT433 is offered in an industry standard 16-lead SOIC- Wide package that is “green” and RoHS compliant. Also available in 5.0 V version as CT432.

  • Optimized for high dV/dt applications
  • Total Error Output: ±0.5% FS
  • 300 ns Response Time, 1 MHz Bandwidth
  • Noise as Low as 9.5 mARMS
  • Integrated 0.5 mΩ Conductor
  • VCC = 3.3 V
  • Common Mode Field Rejection: -54 dB
  • Rated Isolation Voltage: >5 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
    • +70.0 ADC / ±70.0 APK
  • 16-Lead SOIC-Wide package
  • 8mm creepage package

The CT433 is offered in an industry standard 16-lead SOIC- Wide 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

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Filter Document Type:
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All Types Application Note Brochure Guide
Documents Found: 32
Document Type Document Name
Application Note
CT43X Performance Overview
Application Note
What is XtremeSense TMR
Application Note
CT43X Design Recommendation
Application Note
Fuse Time vs. Current for the CT43X Contact Current Sensors
Application Note
Glossary of Isolation-Related Terms for Integrated Current Sensors
Application Note
Package Thermal Resistance for Allegro Current Sensors with Integrated Conductors
Application Note
CMTI Comparison for Allegro Integrated Conductor Current Sensors
Application Note
CT430 Power Measurement Module
Application Note
Using the CT43X TMR Current Sensor in Power Distribution Units (PDUS)
Brochure
DC Fast Charging: Faster and Farther
Brochure
Comfort Through Sustainability - Unlock the Power of Heat Pump Innovation
Brochure
The Future of Sensing: XtremeSense™ TMR Technology
Guide
CT433-50AC Evaluation Board User Guide
Guide
CT433-20AC Evaluation Board User Guide
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All Types Webpage
Documents Found: 32
Document Type Document Name
Webpage
Current Sensor Evaluation Boards Page

TMR Current Sensor Breakout Board for the CT432 and CT433

Pololu CT432/CT433 TMR Current Sensor Carriers

 

Pololu is offering breakout boards with support from Allegro Microsystems as an easy way to use or evaluate their CT432/CT433 tunneling magnetoresistance (TMR), electrically isolated, high-bandwidth current sensors that are optimized for high dV/dt applications.

 

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