CQ209A

Current Sensors Overview

The CQ209A is a current sensor manufactured by Asahi Kasei Microdevices/AKM, designed for measuring AC and DC currents. It utilizes an open-loop Hall effect sensing mechanism to provide accurate current detection up to 31.8A. The device features a bidirectional output configuration, allowing it to handle both positive and negative current flows effectively. It operates within a supply voltage range of 4.5V to 5.5V and draws a maximum supply current of 25mA. The sensor offers a response time of 1µs and maintains a linearity of ±1%. It is housed in a module package suitable for through-hole mounting, ensuring robust integration into various electronic systems.

Current Sensors Feature Summary

• Open-loop Hall effect technology for reliable current measurement
• Bidirectional output capability for versatile application support
• High-speed 1µs response time for dynamic system monitoring

Current Sensors Applications

• AC/DC current monitoring in power supplies
• Overcurrent protection circuits
• Industrial motor control systems

Current Sensors Procurement Notes

Verify the specific package variant and pinout configuration against the official datasheet before procurement. Ensure that the operating temperature range aligns with your system requirements, as environmental conditions can impact sensor performance. Confirm compatibility with your board layout and mounting constraints. Cross-reference the manufacturer's part number to avoid confusion with similar models in the CQ series. Always check for the latest revision status and any potential obsolescence notices from the supplier.

Current Sensors Selection Notes

Select the CQ209A when a high-current, bidirectional sensing solution is required with fast response characteristics. Its open-loop design simplifies circuit complexity compared to closed-loop alternatives. Consider its module form factor for applications requiring through-hole mounting. Evaluate the ±1% linearity specification against your accuracy needs. Compare it with other AKM current sensors if lower current ratings or different packaging options are necessary for your specific design constraints.

Current Sensors Part Context

The CQ209A belongs to the CQ series of current sensors developed by Asahi Kasei Microdevices/AKM. This series leverages the company's extensive expertise in Hall element technology. The CQ series is known for providing robust current sensing solutions for industrial and automotive applications. The CQ209A specifically targets higher current ranges while maintaining compact dimensions. It complements other models like the CQ206A and CQ2234 within the product lineup.

Current Sensors Replacement Considerations

CQ206A is a comparable model within the same series offering similar functionality.