DESCRIPTION
The ACNT-H87B/H87A/H870 voltage sensors are optical isolation amplifiers designed specifically for voltage sensing. Its 2-V input range and high 1-G input impe-dance, 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 ACNT-H87A (±1% gain tolerance) and the ACNT-H870 (±3% gain tolerance) are recommended. For high precision requirements, the ACNT-H87B (±0.5% gain tolerance) can be used. An active-high shutdown pin is available, which reduces the IDD1 current to only 15 μA, making them suitable for battery-powered and other power-sensitive applications.
Broadcom
