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HCPL-7800-000E 产品描述
隔离放大器
设计的HCPL-7800隔离放大器系列感应电子马达驱动器的电流。在典型的汽车和工业应用中,电机电流通过一个外部电阻器和所产生的模拟电压降的流量检测HCPL-7800。 Avago的光耦合器和光电子技术的HCPL-7800隔离放大器系列的基础上。
差分输出电压是建立在对方的HCPL-7800光电隔离屏障。差分输出电压成正比,电机电流,并可以通过使用一个运算放大器,一个单端信号转换。由于在几十纳秒几百伏共模电压摆幅在现代开关逆变器电机驱动,HCPL-7800的设计忽略很高的共模瞬变摆率(至少10千伏/ MS)。
高CMR的HCPL-7800隔离放大器能力提供所需的精度和稳定性,准确地监测电机目前在高噪音的电机控制环境,提供平滑控制各类电机控制应用(少“的转矩脉动”)。
该产品也可用于一般的模拟信号隔离同样严重的噪声条件下,要求精度高,稳定性和线性应用。对于一般的应用程序,我们建议HCPL-7800(增益/ - 3%的公差)。 HCPL-7800采用Σ-Δ(SD)模拟 - 数字转换器技术,斩波稳定放大器,全差分电路拓扑。
总之,这些功能提供了无与伦比的隔离模式噪声抑制,以及出色的偏移和增益随着时间的推移和温度的精度和稳定性。这表现在结构紧凑,自动插入,行业标准的8引脚DIP封装,以满足全球监管安全标准交付。 (一鸥翼表面贴装选项#300也可)。
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