Avago Technologies has announced a new series of competitively priced miniature isolation amplifiers in stretched small outline-8 (stretched SO-8) packages for use in a variety of electronic motor drives used in industrial applications. Avago’s new ACPL-C78A/C780/C784 family of isolation amplifiers are designed for current sensing in electronic motor drives and uses advanced sigma-delta A/D converter technology to allow designers to accurately measure motor phase currents in servo and high-end inverter motor drives. Typical applications include inverter current sensing, motor phase and rail current sensing, motor rail voltage sensing, switching power supply signal isolation, industrial A/D converters and general-purpose current sensing and monitoring.
Avago’s ACPL-C78A/C780/C784 family of isolation amplifiers come in a new stretched SO-8 package with a footprint that is 30 percent smaller than conventional dual-inline packages (DIP), yet meet 8 mm creepage and clearance requirements. With the addition of the ACPL-C78x series to its existing HCPL-78xx family of isolation amplifiers, Avago can now provide designers with a broader range of amplifiers to meet their design and application needs. As motor drive units increase in sophistication in a compact package, there is an emerging growth in using current sensing devices that are smaller. The introduction of the ACPL-C78x series will expand Avago’s current sense product portfolio in this market segment and help motor control designers reduce the printed circuit board (PCB) size required for their designs.
Additionally, the high common-mode rejection (CMR) capability of the ACPL-C78x family provides the precision and stability needed by designers to accurately monitor motor current in high noise motor control environments to provide smoother control – less torque ripple – in their motor control applications. These new stretched packages are compliant to most industrial safety standards such as IEC/EN/DIN EN 60747-5-2, UL 1577 and CSA. Avago offers the ACPL-C78x series in lead-free packages.
Avago Technologies
