High accuracy 3.3V coreless current sensor with more than 8mm of creepage / clearance distance
CZ-3A02 is an open-type current sensor using Hall sensors, which outputs the analog voltage proportional to the AC/DC current. Group III-V semiconductor thin film is used as the Hall sensor, which enables the high-accuracy and high-speed current sensing. Coreless ultra-small surface mount package realizes the space-saving. Also, the low primary conductor resistance suppresses heat generation to achieve the 50Arms continuous current. Existing coreless current sensors have an accuracy disadvantage from degradations caused by a disturbed magnetic field. The CZ-3A0x series has a built-in stray magnetic field reduction function to suppress this effect. The CZ-3A0x series also has dual overcurrent detection function. The CZ-3A0x series is UL 61800-5-1 safety compliant, which is an excellent fit for industrial AC drives, servo motors, etc. The CZ-3A0x series is also an excellent fit to input the sensor signal into a 3.3V AD converter. The CZ-3A0x series has a large variety of linear measurement ranges, from ±12.9A (CZ-3A01), to ±129.1A, (CZ-3A07). This enables designers to use the same board design across different current rating products.
□ Compliant with safety standard of UL61800-5-1 (Clearance, Creepage distance ≧ 8.0mm)
□ Certified with safety standards of UL-1577 and IEC/UL60950-1
□ 3.3V Output
□ Maximum Primary Current : 50Arms
□ High-accuracy : 0.4%F.S.(Ta=35～85°C Typ.)
□ Quite small primary conductor resistance : 0.27mΩ Typ.
□ Stray magnetic field reduction function
□ Small-sized surface mount package（12.7mm×10.9mm×2.25mm）
□ Dual overcurrent detection function (Adjustable overcurrent detection thresholds)
□ Isolation Voltage：3.0kVrms（AC50Hz，60s）
□ Non-ratiometric output