© 2022 Crocus Technology
CT456 · Rev. 1.1
1
CT456
High dV/dt Optimized XtremeSense® TMR Differential,
Coreless Current Sensor with Programmable Gain
FEATURES
• User Programmable Field Range:
o 6 mT to 8 mT
o 12 mT to 24mT
• Pre-set Magnetic Field Ranges:
o 0 mT to +6 mT
o -6 mT to +6 mT
• Optimized for high dV/dt applications
• Differential Sensing for stray magnetic field
suppression
o -50dB common mode field rejection
• Linear Analog Output Voltage
• 1 MHz Bandwidth
• Response Time < 300 ns
• Supply Voltage: 3.3 V or 5.0 V
• Low Noise Performance
• AEC-Q100 Grade 1 (Under qualification)
• Package Options:
o 8-lead TSSOP
APPLICATIONS
• Solar/Power Inverters
• Battery Management Systems
• Industrial Equipment
• Power Utility Meters
• Power Conditioner
• DC/DC Converters
PRODUCT DESCRIPTION
The CT456 is a high bandwidth and low noise integrated
zero-loss contactless current sensor that uses Crocus
Technology’s patented XtremeSense TMR technology to
enable high accuracy current measurements for many
consumer, enterprise, and industrial applications. It
supports six (6) field ranges where the CT456 senses and
translates the magnetic field into a linear analog output
voltage. It achieves a total error output of less than 1.0%
over voltage and temperature.
This coreless current sensor is not only small in size and
simple to design, but it also 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 having almost no impact on the
accuracy of the current measurement.
It has less than 300 ns output response time while the
current consumption is about 6.0 mA. The CT456 is
equipped with a filter function to reduce the noise on the
output pin.
The CT456 is assembled in an industry standard 8-lead
SOIC package and a very low profile, 8-lead TSSOP
package that are both “green” and RoHS compliant.
PACKAGE: 8-lead TSSOP
(Not to Scale)
CT456
High dV/dt Optimized XtremeSense® TMR Differential, Coreless Current
Sensor with 1 MHz Bandwidth and Programmable Gain
© 2022 Crocus Technology
CT456 · Rev. 1.1
2
Part Ordering Information
Part Number
Range
Supply
Voltage
Configuration
Operating
Temperature
Range
Differential Magnetic Field Sensor
CT456-A06B3-TS08
±6 mT
3.3V
Differential
Grade 1
-40°C to +125°C
CT456-A06U3-TS08
CT456-A06B5-TS08
5.0V
CT456-A06U5-TS08
Programmable Sensor
CT456-A00B3-TS08
±6 to ±8mT
and
±12mT to ±24mT
3.3V
Differential
Grade 1
-40°C to +125°C
CT456-A00U3-TS08
CT456-A00B5-TS08
5.0V
CT456-A00U5-TS08
Evaluation Board Ordering Information
Part Number
Magnetic Field
Range
Supply Voltage
Operating
Temperature Range
Current Carrying
Conductor
CTD456-BB-06B3
-6 mT to +6 mT
3.3V
-40°C to +125°C
Bus Bar
CTD456-BB-06B5
-6 mT to +6 mT
5.0V
CTD456-PT-06B3
-6 mT to +6 mT
3.3V
PCB Trace
CTD456-PT-06B5
-6 mT to +6 mT
5.0V