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