CQ3302

Current Sensors Overview

The CQ3302 is a high-speed response coreless current sensor manufactured by Asahi Kasei Microdevices. It utilizes open-loop Hall effect technology to measure both AC and DC currents with a maximum sensing capacity of 21A. The device features a bidirectional output in a proportional voltage format, offering a sensitivity of 100mV/A. It operates within a supply voltage range of 4.5V to 5.5V and consumes a maximum supply current of 11mA. The sensor provides an accuracy of ±0.5% and linearity of ±0.6%, with a fast response time of 0.5µs. It is housed in a 24-LSSOP package with 10 leads and supports an operating temperature range from -40°C to 90°C.

Current Sensors Feature Summary

• Utilizes open-loop Hall effect technology for non-contact current measurement
• Capable of detecting both AC and DC current signals simultaneously
• Provides proportional voltage output for direct interface with control systems
• Features high-speed response characteristics suitable for dynamic applications

Current Sensors Applications

• Motor drive current monitoring
• Power supply overcurrent protection
• Industrial inverter control systems
• Battery management system current sensing

Current Sensors Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific ordering suffix matches the required packaging configuration. Check for RoHS compliance status and ensure the part number corresponds to the correct package variant. Review the latest datasheet for any updates regarding pinout or electrical specifications before integration into design schematics.

Current Sensors Selection Notes

Select this component when bidirectional AC/DC current sensing is required with high speed. Ensure the application current does not exceed the 21A limit. Verify that the supply voltage aligns with the 4.5V to 5.5V specification. Consider the thermal environment to ensure operation remains within the -40°C to 90°C range. Evaluate if the proportional voltage output meets the input requirements of the downstream processing circuitry.

Current Sensors Part Context

The CQ3302 belongs to the CQ series of Currentier™ current sensors from Asahi Kasei Microdevices. This series focuses on high-speed response and precision for industrial and automotive applications. The company specializes in magnetic sensors and mixed-signal ICs, leveraging its expertise in Hall effect technology developed since the 1980s. The CQ series represents a solution for precise current monitoring in power electronics.

Current Sensors Replacement Considerations

The CZ3702 is identified as a manufacturer-recommended replacement for the CQ3302. Verify compatibility regarding package dimensions, pinout configuration, and electrical parameters before substitution. Ensure the replacement part meets all original design requirements for accuracy, speed, and operating conditions.