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Isolated, 500kHz TMR Current Sensor in 1 mΩ SOIC-8 Package
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CT4022 and CT4032
XtremeSense™ TMR Current Sensor with High dV/dt Immunity and Common-Mode Field Rejection
FEATURES AND BENEFITS DESCRIPTION
The CT4022/32 is a highly linear, XtremeSense™ TMR-based
current sensor. The tunneling magnetoresistive (TMR) sensor
is differential, which enables common-mode field rejection
to cancel out stray magnetic fields. The primary conductor
resistance is only 1 mΩ, which enables the sensor to withstand
high inrush current and to 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. • High operating 500 kHz bandwidth for fast control loops
or where high-speed currents are monitored
• High performance for optimized energy applications
• Ratiometric operation
• Differential sensing rejects common-mode fields
• No magnetic hysteresis
• 3.3 V or 5 V supply voltage variants
• Low 1 mΩ primary conductor resistance for low power
dissipation and high-inrush current capability
• Optimized for high dV/dt applications
• UL 62368-1 (edition 3) certification (pending), highly …
