HCPL-7520 Datasheet | Agilent Technologies

Agilent HCPL-7520 Isolated Linear Sensing IC Data Sheet Description The HCPL-7520 isolated linear current sensing IC family is designed for current sensing in low-power electronic motor drives. In a typical implementation, motor current flows through an external resistor and the resulting analog voltage drop is sensed by the HCPL-7520. An output voltage is created on the other side of the HCPL-7520 optical isolation barrier. This single-ended output voltage is proportional to the motor current. Since mon-mode voltage swings of several hundred volts in tens of nanoseconds are mon in modern switching inverter motor drives, the HCPL7520 was designed to ignore very high mon-mode transient slew rates (of at least 10 k V/µs). The high CMR capability of the HCPL-7520 isolation amplifier provides the precision and stability needed to accurately monitor motor current in high noise motor control environments, providing for smoother control (less “torque ripple”) in various types...