ACPL-C78A, ACPL-C780, ACPL-C784
Miniature Isolation
Amplifiers
Data Sheet
Description
The ACPL-C78A/C780/C784 isolation amplifier family was 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 ACPL-C78A/C780/C784.
A differential output
voltage is created on the other side of the ACPL-C78A/ C780/C784 optical isolation barrier.
This differential output
voltage is proportional to the motor current and can be converted to a single-ended signal by using an op-amp as shown in the recommended application circuit.
Since common-mode
voltage swings of several hund...