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The ACPL-C870 voltage sensors are opticalisolation amplifiers designed specifically for voltage
sensing. Its 2 V input range and high 1 GΩ input impedance,makes it well suited for isolated voltage sensing requirements in electronic power converters applications including motor drives and renewable energy systems.In a typical voltage sensing implementation, a resistive voltage divider is used to scale the DC-link voltage to suit the input range of the voltage sensor. A differential output voltage that is proportional to the input voltage is created on the other side of the optical isolation barrier.
For general applications, the ACPL-C870 (±3% gain tolerance) is recommended.