ACHS-7121-500E

ACHS-7121-500E is an ACHS-7122 series 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. It consists of 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 IC converts into a proportional voltage. Device accuracy is optimized through the close proximity of the magnetic signal to the Hall transducer. A precise, proportional voltage is provided by the low-offset, chopper-stabilized CMOS Hall IC, which is programmed for accuracy after packaging. Typical applications include low-power inverter current sensing, motor phase and rail current sensing, solar inverters, chargers and converters, and switching power supplies.

• Output voltage proportional to AC or DC currents
• Ratiometric output from supply voltage
• Single supply operation: 5.0V
• Low-noise analogue signal path, near zero magnetic hysteresis
• Device bandwidth is set via FILTER pin:80kHz typical bandwidth with 1nF filter capacitor
• Factory-trimmed for accuracy, extremely stable output offset voltage
• Worldwide safety approval: UL, CSA: isolation voltage 3kVRMS, 1 minute
• >25kV/µs common-mode transient immunity
• Current range: ±10A, 185mV/A sensitivity
• Wide operating temperature: -40ºC to 110ºC