The ISO130 is a high isolation-mode rejection, isolation amplifier suited for motor control applications. Its versatile design provides the precision and stability needed to accurately monitor motor currents in high-noise motor control environments. The ISO130 can also be used for general analog signal isolation applications requiring stability and linearity under severe noise conditions. The signal is transmitted digitally across the isolation barrier optically, using a high-speed AlGaAs LED. The remainder of the ISO130 is fabricated on 1m CMOS IC process. A sigma-delta analog-to-digital converter, chopper stabilized amplifiers and differential input and output topologies make the isolation amplifier suitable for a variety of applications. The ISO130 is easy to use. No external components are required for operation. The key specifications are 10kV/s isolation-mode rejection, 85kHz large signal bandwidth, and 4.6V/C VOS drift. A single power supply ranging from +4.5V to +5.5V makes this amplifier ideal for low power isolation applications.