CT417-HSN820MR

Current Sensors Overview

The CT417-HSN820MR is a single-channel magnetoresistive current sensor from the XtremeSense™ Crocus series. It detects currents up to 20A with bidirectional capability and offers a sensitivity of 66.7mV/A. The device operates on a 3V to 3.6V supply, consuming a maximum of 9mA. It features a 300ns response time and supports frequencies from DC to 1MHz. Accuracy is ±1% with linearity at ±0.1%. Operating temperature ranges from -40°C to 125°C. The component is housed in an 8-SOIC package.

Current Sensors Feature Summary

• Utilizes XtremeSense™ TMR technology for high-performance magnetic sensing
• Provides bidirectional current detection within a compact surface-mount package
• Delivers voltage output ratio proportional to sensed current magnitude

Current Sensors Applications

• Motor control systems requiring precise current feedback
• Power supply monitoring and protection circuits
• Industrial automation equipment current sensing

Current Sensors Procurement Notes

Verify the specific suffix HSN820MR against your design requirements to ensure compatibility with bidirectional sensing needs and 20A limits. Confirm that the 3V-3.6V supply range aligns with your system power architecture. Check the component status as it may be subject to obsolescence notices. Ensure the 8-SOIC footprint matches your PCB layout constraints before finalizing procurement orders.

Current Sensors Selection Notes

Select this model when bidirectional current measurement is required for AC or DC applications. The 20A rating suits moderate current loads where high precision is necessary. Consider the 3V-3.6V supply constraint compared to 5V variants like the CT428. The 1MHz bandwidth supports high-frequency switching applications. Evaluate the ±1% accuracy against stricter tolerance requirements if higher precision is needed.

Current Sensors Part Context

This part belongs to the Allegro MicroSystems CT417 series, which utilizes Tunnel Magnetoresistance (TMR) technology. The series includes various current ratings and polarity options. The CT417-HSN820MR specifically addresses bidirectional sensing needs. It shares the same 8-SOIC form factor as other series members but differs in electrical specifications and supply voltage requirements.

Current Sensors Replacement Considerations

Public confirmed substitute: CT426-HSN820MR. Note that the CT426 variant typically operates on a different supply voltage range (3V-3.6V vs 4.75V-5.5V for some counterparts) and may have different sensitivity characteristics. Verify pinout and electrical parameters before substitution.