CT418-HSN865MR

Current Sensors Overview

The CT418-HSN865MR is a unipolar current sensor from Allegro MicroSystems' XtremeSense Crocus series, utilizing TMR technology. It features an integrated current-carrying conductor for direct bus measurement. The device offers a detection range of 65A with a sensitivity of 30.8mV/A and a linear output voltage. Key electrical parameters include ±1% accuracy, ±0.2% linearity, and a 300ns response time. It operates on a 4.75V to 5.5V supply with a maximum supply current of 9mA. The sensor supports DC to 1MHz frequency bandwidth and functions within a temperature range of -40°C to 125°C.

Current Sensors Feature Summary

• Integrates a current-carrying conductor for direct bus-mount sensing without external shunts
• Provides linear analog voltage output with ultra-low noise characteristics
• Delivers high precision with total error output less than or equal to ±1.0% of full scale

Current Sensors Applications

• Overcurrent protection in industrial motor drives
• Current monitoring in consumer and enterprise power supplies
• Battery management systems in clean energy applications

Current Sensors Procurement Notes

Verify the specific suffix HSN865MR to confirm bidirectional operation and 65A rating. Check datasheet revisions for pinout consistency. Confirm RoHS3 compliance status prior to integration. Ensure thermal resistance specifications are reviewed for PCB layout requirements. Validate supply voltage ranges against system power rails.

Current Sensors Selection Notes

Select this component for applications requiring high bandwidth up to 1MHz and low noise performance. The bidirectional capability allows measurement of both positive and negative currents. Consider the 8-SOIC package size for space-constrained designs. Evaluate the 9mA supply current against power budget constraints. Compare accuracy requirements against the ±1% specification.

Current Sensors Part Context

This part belongs to the CT418 family of XtremeSense TMR sensors. It shares the Crocus technology platform with other variants like the CT426 series. The family emphasizes high accuracy and low noise for modern power electronics. The CT418 specifically targets bidirectional sensing needs compared to unipolar alternatives.

Current Sensors Replacement Considerations

CT418-ASN865MR is a documented substitute within the same product family.