FEATURES AND BENEFITS
• User-programmable field range:
□ 6 to 24 mT
• Preset magnetic field ranges:
□ 0 to 6 mT
□ ±6 mT
□ 0 to 12 mT
□ ±12 mT
□ 0 to 24 mT
□ ±24 mT
• Linear analog output voltage
• 1 MHz bandwidth
• Response time: <300 ns
• Reference voltage output for unipolar/bipolar field
measurements
• Supply voltage: 4.75 to 5.50 V
• Low noise performance
• Filter pin to reduce noise on output
• Package options:
□ 8-lead SOIC
□ 8-lead TSSOP
APPLICATIONS
• Solar/power inverters
• Battery management systems
• Industrial equipment
• Power utility meters
• Power conditioner
• DC/DC converters
DESCRIPTION
The CT450 is a high-bandwidth and low-noise integrated
contactless current sensor that uses Allegro patented
XtremeSense™ TMR technology to enable high-accuracy
current measurements for many consumer, enterprise, and
industrial applications. The device supports six standard field
ranges where the CT450 senses and translates the magnetic field
into a linear analog output voltage. The device achieves a total
error output of less than ±1.0% over voltage and temperature
after calibration.
The CT450 is also available in a user-programmable variant
which enables end-of-line calibration of gain, while the sensor
is preprogrammed to adjust offset and compensate temperature
drift. The ability to adjust gain relaxes mechanical tolerances
during sensor mounting.
The device has less than 300 ns output response time while the
current consumption is about 6.0 mA. The CT450 is equipped
with a filter function to reduce noise on the output pin.
The CT450 is housed in an 8-lead SOIC package and a lowprofile, industry-standard 8-lead TSSOP package that are both
green and RoHS compliant