ACHS-7225-500E

ACHS-7225-500E is a fully integrated, hall effect-based linear current sensor IC with 3kVRMS isolation and low-resistance current conductor. It is designed for AC or DC current sensing in industrial, commercial, and communications systems. Inside of the ACHS-7225 IC is a precise, low-offset, linear Hall circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field that the Hall sensor converts into a proportional voltage. Device accuracy is optimized through the close proximity of the magnetic signal to the Hall sensors. A precise, proportional voltage is provided by the low-offset, chopper-stabilized CMOS Hall IC, which is programmed for accuracy after packaging. Applications include E-bikes, food processor, low-power inverter current sensing, motor phase and rail current sensing, solar inverters, chargers and converters, switching power supplies.

• 0.7mohm primary conductance resistance at TA = 25°C, VDD = 3.3V, CF = 1nF
• Sensing current range from ±50A
• Output voltage proportional to AC or DC currents, ratiometric output from supply voltage
• Single supply operation: 3.3V, low-noise analog signal path
• Factory-trimmed for accuracy, extremely stable output offset voltage
• Near zero magnetic hysteresis, maximum total output error of ±5.5% across operating TA
• Worldwide safety approvals: UL/cUL, isolation voltage: 3kVrms, 1 minute
• Common mode transient immunity is 25kV/µs min at VCM = 1000V, CF = 1nF
• SO-8 package
• Ambient operating temperature range from -40ºC to +110ºC