CQ3303

Current Sensors Overview

The CQ3303 is a high-speed response coreless current sensor manufactured by Asahi Kasei Microdevices. It utilizes open-loop Hall effect technology to measure AC and DC currents with a maximum sensing capacity of 35.7A. The device features a single channel and provides a voltage output ratio with a sensitivity of 37mV/A. It operates on a supply voltage range of 3.3V, drawing a maximum supply current of 6.2mA. The component offers a fast response time of 0.5µs and maintains an accuracy of ±1.3%. Designed for surface mount installation, it is housed in a compact 24-VSOP package.

Current Sensors Feature Summary

• Employs open-loop Hall effect technology for precise AC/DC current measurement
• Delivers rapid signal processing with a 0.5µs response time
• Provides analog voltage output proportional to sensed current magnitude

Current Sensors Applications

• Motor drive current monitoring
• Power supply overcurrent protection
• Industrial automation control systems

Current Sensors Procurement Notes

Verify the specific part number suffix against official manufacturer documentation to ensure correct electrical specifications and package configuration. Confirm that the selected variant matches the required operating temperature range and supply voltage constraints for your design. Cross-reference the datasheet revision history to account for any manufacturing changes or updates that may affect compatibility. Ensure compliance with RoHS3 standards if environmental regulations apply to your project requirements.

Current Sensors Selection Notes

Select this component when a compact solution is needed for mid-range current sensing applications requiring fast transient response. The VSOP package facilitates space-constrained PCB layouts while maintaining thermal performance. Consider the ±1.3% accuracy specification against system tolerance requirements. Evaluate the 3.3V supply constraint to ensure compatibility with existing logic levels and power distribution networks within the target electronic assembly.

Current Sensors Part Context

The CQ3303 belongs to the CQ series of current sensors from Asahi Kasei Microdevices, designed for high-speed industrial and automotive applications. This series leverages coreless Hall effect technology to provide galvanic isolation between the primary current path and the secondary output circuitry. The component represents a specialized solution for monitoring electrical parameters where size, speed, and reliability are critical factors in system design.

Current Sensors Replacement Considerations

CZ3704