The Broadcom optocoupler is an ACPL-C79B series precision miniature isolation amplifier. It is designed for current and voltage sensing in electronic power converters in applications including motor drives and renewable energy systems. In a typical motor drive implementation, current flows through an external resistor and the resulting analogue voltage drop are sensed by the isolation amplifier. A differential output voltage that is proportional to the current is created on the other side of the optical isolation barrier.

• ±0.5% of high gain accuracy
• 0.05% excellent linearity
• 15 kV/μs minimum common mode transient immunity at VCM is 1500V
• 200kHz wide bandwidth
• 3V to 5.5V wide supply range for output side
• -50 ppm/°C of low gain drift
• Input offset voltage is 0.4mV
• Maximum forward voltage is 6V
• Maximum input current is 18.5mA
• Temperature ranges between -40°C and 105°C

• Current/voltage sensing in ac and servo motor drives
• Data acquisition systems
• general-purpose analog signal isolation
• Industrial process control
• Solar inverters, wind turbine inverters
• Switching power supply signal isolation

Certifications