Description
The HCPL-788J isolation amplifier is designed for current sensing in electronic motor drives. In a typical implementation, motor currents flow through an external resistor and the resulting analog voltage drop is sensed by the HCPL-788J. A larger analog output voltage is created on the other side of the HCPL-788J’s optical isolation barrier. The output voltage is proportional to the motor current and can be connected directly to a single supply A/D converter.

FEATUREs
• Output Voltage Directly Compatible with A/D Converters (0 V to VREF)
• Fast (3 µs) Short Circuit Detection with Transient Fault Rejection
• Absolute Value Signal Output for Overload Detection
• 1 µV/°C Offset Change vs. Temperature
• SO-16 Package
• -40°C to +85°C Operating Temperature Range
• 25 kV/µs Isolation Transient Immunity
• Regulatory Approvals (Pending): UL, CSA, VDE 0884 (891 Vpeak Working Voltage)