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ACPL-C870-000E 产品描述
ACPL-C87B/C87A/C870 电压传感器为特别面向电压感应应用设计的光隔离放大器,2V 的输入范围和 1GΩ 的高输入阻抗使得它非常适合包括电机驱动和可再生能源系统等电子功率转换应用的隔离电压感应要求。在典型的电压感应施作中,使用电阻式分压电路来调节直流母线电压以适应电压传感器的输入范围,并在光隔离屏障的另一端产生正比于输入电压的差分输出电压。
建议在通用型应用中使用 ±1% 增益误差的 ACPL-C87A 和 ±3% 增益误差的 ACPL-C870,对于高精密度要求的应用则可以采用 ±0.5% 增益误差的 ACPL-C87B,ACPL-C87B/C87A/C870 光隔离放大器系列采单一 5V 电源工作并具备优异的线性度,提供的高电平关断引脚可以把 Idd1 电流降低到仅 15μA,使得这些器件非常适合用于电池供电和其他注重功耗的应用。
ACPL-C87B/C87A/C870 的 15kV/μs 高共模瞬变抗扰度提供高噪环境下精确监测直流母线电压所需的精密度和稳定性,结合卓越的光电耦合技术,ACPL-C87B/C87A/C870 采用 Σ-Δ 模数调制技术、斩波稳定放大器以及差分输出,提供无与伦比的隔离模式噪声抑制能力、低偏置、高增益精密度和稳定性,这些性能都体现在一个符合全球安全规范要求的紧凑型可自动插入延展型 SO-8 (SSO-8) 封装中。
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