CTD455-BB-48B5

CT455 1MHz Bandwidth Contactless Current Sensor with Programmable Gain

The Allegro CT455 evaluation board (CTD455) demonstrates the advantages of the CT455 high dV/dt optimized XtremeSense™ tunnel-magnetoresistance (TMR) coreless current sensor.

Features

Contents

  • Preset magnetic field range: ±6 mT or ±48 mT
  • Low-noise performance
  • Optimized for high dV/dt applications
  • Linear analog output voltage
  • Response time: <300 ns
  • Supply voltage: 5 V
  • Operating temperature: –40°C to 125°C

The device supports a ±6 mT magnetic field range where the CT456 senses and translates the magnetic field into a linear analog output voltage. The device achieves a total error output of less than 1% over voltage and temperature. The device provides effective common-mode rejection of more than –50 dB; this enables the CT456 to have greater than 90% immunity to stray magnetic fields; thus, there is nearly zero impact to the accuracy of the current measurement. The device has less than 300 ns output response time, while the current consumption is approximately 6.0 mA. The CT456 is housed in a very low-profile, industry standard eight-lead thin-shrink small-outline package (TSSOP) that is both green and RoHS compliant.