Analog signal isolation

This device can also be used for general analog signal isolation
applications requiring high accuracy, stability, and linearity
under similarly severe noise conditions.
Analog signal isolation circuit

HCPL-7840

Description
The HCPL-7840 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 HCPL-7840.