CT428-HSN850DR

Current Sensors Overview

The CT428-HSN850DR is a unidirectional magnetoresistive current sensor from Allegro MicroSystems' XtremeSense Crocus series. It measures AC and DC currents up to 50A with a sensitivity of 80mV/A. The device features ±0.7% accuracy and ±0.2% linearity, operating on a 4.75V to 5.5V supply with a maximum supply current of 9mA. It offers a 300ns response time and supports frequencies from DC to 1MHz. Packaged in an 8-SOIC (0.154" width) surface-mount case, it functions within a temperature range of -40°C to 125°C.

Current Sensors Feature Summary

• Utilizes XtremeSense TMR technology for ultra-low noise performance
• Provides high precision with ±0.7% accuracy and ±0.2% linearity
• Supports bidirectional magnetic field detection for accurate current measurement

Current Sensors Applications

• Motor control systems
• Power supply monitoring
• Industrial automation equipment

Current Sensors Procurement Notes

Verify the specific suffix DR indicates tape-and-reel packaging when ordering. Confirm the HSN850 designation matches the required 50A unidirectional specification. Ensure compatibility with the 8-SOIC footprint and 4.75V-5.5V supply requirements. Check RoHS3 compliance status for environmental regulations. Validate the 36-week standard lead time against project schedules.

Current Sensors Selection Notes

Select this component for applications requiring high bandwidth up to 1MHz and low noise characteristics. Compare with CT418 if higher accuracy is not critical, as CT428 offers superior precision. Consider the 8-SOIC package size for space-constrained PCB layouts. Evaluate the 9mA supply current for power-sensitive designs. Ensure the unidirectional nature aligns with the circuit's current flow direction.

Current Sensors Part Context

This part belongs to the CT428 family of XtremeSense TMR sensors, designed for high-performance current sensing. It shares the Crocus technology platform with other variants like CT418, differing primarily in accuracy specifications. The series targets automotive and industrial markets demanding reliable magnetic sensing solutions.

Current Sensors Replacement Considerations

CT418-HSN850DR serves as a lower-accuracy alternative within the same package and series.