CT4022
© 2023 Crocus Technology
CT4022 · Rev. 0.3
1
PRELIMINARY DATASHEET
XtremeSense® TMR Current Sensor with High dV/dt Immunity,
Common-Mode Field Rejection and 3 kV
RMS
Galvanic Isolation
FEATURES
• 10 A to 65 A Unipolar and Bipolar Range
• Optimized for high dV/dt applications
• 500 kHz Bandwidth
• Common-Mode Field Rejection
• 0.5 m Primary Conductor Resistance
• Ratiometric Output from Supply Voltage
• ±3% Max Total Error from -40°C to 125°C
• UL/IEC 62387 Certification
o Rated Isolation Voltage 3 kV
RMS
o Basic Isolation Working voltage 701 V
RMS
o Reinforced Isolation Working Voltage 344 V
RMS
• Supply Voltage: 3.3 V or 5.0 V
• Available in 8-Lead SOIC Package
PRODUCT DESCRIPTION
The CT4022 is a highly linear, XtremeSense® TMR based
Current Sensor. The TMR sensor is differential which
enables common-mode field rejection to cancel out stray
magnetic fields. The primary conductor is only 0.5 m
which enables the sensor to withstand high in-rush current
and minimize power loss. The current applied to the pin of
the primary conductor generates an internal differential
magnetic field. The TMR sensor provides a proportional
voltage to the differential magnetic field while rejecting
common-mode stray magnetic fields.
The pins of the primary conductive path and the sensor
leads are galvanically isolated. This enables high-side
current sensing without the need for additional isolation
techniques. The CT4022 is offered in an industry standard
8-lead SOIC package that is “green” and RoHS compliant.
The small footprint and low-profile footprint are well suited
for space-constrained applications.
PACKAGE: 8-lead SOIC (SN8 suffix)
APPLICATIONS
• Motor Control
• Power Inverters
• UPS, SMPS and Telecom Power Supplies
• Consumer and Enterprise Electronics
TYPICAL APPLICATION
CT4022
XtremeSense® TMR Current Sensor with High dV/dt Immunity,
Common-Mode Field Rejection, 3 kV
RMS
Galvanic Isolation
© 2023 Crocus Technology
CT4022 · Rev. 0.3
2
PRELIMINARY DATASHEET
Part Ordering Information
Part Number
Current Range
(I
PMAX
)
Sensitivity
(mV/A)
V
CC
= 3.3V
Sensitivity
(mV/A)
V
CC
= 5.0V
Polarity
Package
CT4022-H10BSN8
±10
132
200
Bidirectional
8-lead SOIC
4.89 6.00 1.62 mm
CT4022-H20BSN8
±20
66
100
CT4022-H30BSN8
±30
44
66.66
CT4022-H40BSN8
±40
33
50
CT4022-H50BSN8
±50
26.4
40
CT4022-H65BSN8
±65
20.3
30.77
CT4022-H10USN8
10
264
400
Unidirectional
CT4022-H30USN8
30
88
133.33
Evaluation Board Ordering Information
Part Number
Current Range (I
PMAX
)
Polarity
Operating Temperature Range
CTD4022-10B
±10
Bidirectional
-40°C to +125°C
CTD4022-20B
±20
CTD4022-30B
±30
CTD4022-40B
±40
CTD4022-50B
±50
CTD4022-65B
±65
CTD4022-30U
30
Unidirectional