CT417-HSN820DR

Current Sensors Overview

The CT417-HSN820DR is a unidirectional current sensor from Allegro MicroSystems utilizing XtremeSense™ Crocus technology. It features an integrated current-carrying conductor and provides a linear analog voltage output. The device detects currents up to 20A with a sensitivity of 100mV/A. It operates within a supply voltage range of 3V to 3.6V and supports frequencies from DC to 1MHz. Key specifications include ±1% accuracy, ±0.2% linearity, and a response time of 300ns. The sensor is housed in an 8-SOIC package and functions across temperatures from -40°C to 125°C.

Current Sensors Feature Summary

• Integrated current carrying conductor for direct PCB mounting
• Linear analog output voltage proportional to sensed current
• High bandwidth capability supporting frequencies up to 1MHz

Current Sensors Applications

• Motor control systems
• Power supply monitoring
• Battery management systems

Current Sensors Procurement Notes

Verify the specific suffix DR indicates tape and reel packaging when ordering. Confirm that the 3V to 3.6V supply requirement aligns with the target system design. Ensure thermal management strategies account for the specified operating temperature range during integration. Cross-reference the datasheet for pinout compatibility with existing layouts.

Current Sensors Selection Notes

Select this component for applications requiring high precision and fast response times in compact surface-mount designs. The unidirectional nature suits single-quadrant current monitoring tasks. Consider the 100mV/A sensitivity for signal conditioning requirements. Evaluate the 8-SOIC footprint against available board space constraints.

Current Sensors Part Context

This part belongs to the XtremeSense™ Crocus series, representing Allegro's tunnel magnetoresistance (TMR) technology. It offers improved performance over earlier generations regarding linearity and offset stability. The CT417 variant specifically targets higher current densities compared to lower-range siblings in the same family.

Current Sensors Replacement Considerations

CT417-HSN820MR serves as a bidirectional alternative if reverse current detection is required. CT416-HSN820DR may be considered for different sensitivity profiles within the same package. Verify electrical parameter equivalence before substitution.