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The ACPL-C87B 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 high precision requirements,the ACPL-C87B (±0.5% gain tolerance) can be used. TheACPL-C87B/C87A/C870 family operates from a single 5 V supply and provides excellent linearity. An active-high
shutdown pin is available which reduces the IDD1 currentto only 15 mA, making them suitable for battery-powered and other power-sensitive applications.