CZ3704

Current Sensors Overview

The CZ3704 is a unidirectional coreless current sensor manufactured by Asahi Kasei Microdevices. It utilizes open-loop Hall effect technology to measure direct currents up to 54A with a sensitivity of 40mV/A. The device features a ratiometric voltage output and operates within a supply voltage range of 4.5V to 5.5V, consuming a maximum supply current of 25mA. It offers high precision with ±1% accuracy and ±0.13% linearity, alongside a fast response time of 1µs. Designed for surface mount installation, it is housed in a 10-SMD PowerSOIC package and supports an operating temperature range from -40°C to +105°C.

Current Sensors Feature Summary

• Open-loop Hall effect sensing mechanism for non-contact current measurement
• Ratiometric voltage output compatible with standard analog interfaces
• High precision performance with ±1% accuracy and ±0.13% linearity
• Bidirectional current detection capability

Current Sensors Applications

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

Current Sensors Procurement Notes

Verify the specific ordering suffix against the manufacturer datasheet to ensure correct packaging options such as tape and reel or cut tape are selected. Confirm that the required sensitivity and accuracy specifications align with the CZ3704 variant rather than other models in the CZ37 series. Check RoHS compliance status and moisture sensitivity level requirements for your assembly process before placing orders.

Current Sensors Selection Notes

Select the CZ3704 when bidirectional current measurement is required with a maximum sensing range of 54A. Ensure the application circuit can accommodate the 40mV/A sensitivity and ratiometric output characteristics. Consider the 16-PowerSOIC footprint for PCB layout constraints. Verify that the operating temperature range meets the environmental demands of the target equipment.

Current Sensors Part Context

The CZ3704 belongs to the CZ37 series of current sensors produced by Asahi Kasei Microdevices. This series leverages thin-film Hall element technology developed by the company. The component is part of a broader portfolio including variants like the CZ3706 and CZ3722, which offer different current ratings and sensitivities while sharing similar package types and operational principles.

Current Sensors Replacement Considerations

The CZ3706 serves as a higher-current alternative within the same series, offering 180A sensing capability. For lower current applications, the CZ3722 provides a unidirectional option with 41.3A rating. Cross-referencing pinouts and sensitivity values is essential when substituting these parts.