ACPL-C780-060E

ACPL-C780-060E is a miniature isolation amplifier designed for current sensing in electronic motor drives. In a typical implementation, motor currents flow through an external resistor, and the resulting analogue voltage drop is sensed by the ACPL-C780. A differential output voltage is created on the other side of the ACPL-C780 optical isolation barrier. This differential output voltage is proportional to the motor current. It can be converted to a single-ended signal using an op-amp as shown in the recommended application circuit. Since common-mode voltage swings of several hundred volts in tens of nanoseconds are common in modern switching inverter motor drives, the ACPL-C780 is designed to ignore very high common-mode transient slew rates (of at least 10 kV/µs). Typical applications include motor phase and rail current sensing, inverter current sensing, DC bus voltage sensing, general-purpose current sensing and monitoring and general-purpose analogue signal isolation.

• 15KV/μs common-mode rejection at VCM = 1000V
• Compact, auto-insertable stretched SO-8 package
• 0.00025V/V/°C gain drift vs. temperature
• 0.3mV input offset voltage
• 100KHz bandwidth and 0.004% nonlinearity
• Worldwide safety approval: UL 1577 (5000Vrms/ 1min), CSA and IEC/EN/DIN EN 60747-5-5
• Advanced sigma-delta (Σ-Δ) A/D converter technology