ACPL-C720 Datasheet | Broadcom

ACPL-C72B, ACPL-C72A, ACPL-C720 Precision Miniature Isolation Amplifiers Data Sheet Description Features The Broad® ACPL-C72B, ACPL-C72A, and ACPL-C720 isolation amplifiers are designed for current 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 shunt resistor and the resulting analog voltage drop is 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. Designed to reduce power loss on the shunt resistor, the ACPL-C72x series are optimized to accept a ±50-m V input voltage range. For general applications, the ACPL-C72A (±1% gain tolerance) and the ACPL-C720 (±3% gain tolerance) are remended. For high-precision applications, the ACPL-C72B (±0.5% gain tolerance) can be used. The product operates from a single 5V supply and provides excellent linearity and dynamic performance of 65-d B SNR. The high mon-mode transient immunity (25 k V/μs) of the ACPL-C72x series provides the precision and stability needed to accurately monitor motor current in high-noise motor control environments, providing for smoother control (less “torque ripple”) in various types of motor control applications. bined with superior optical coupling technology, the ACPL-C72x series implements sigma-delta (Σ-Δ) analog-todigital converter, chopper-stabilized amplifiers, and a fully differential circuit topology to provide unequaled isolationmode noise rejection, low offset, high gain accuracy, and stability. This performance is delivered in a pact, auto-insertable Stretched SO-8 (SSO-8) package that meets worldwide regulatory safety standards. - ±0.5% high gain accuracy (ACPL-C72B) - 0.5-m V input offset voltage - Excellent 0.03% linearity - 65-d B SNR - 200-k Hz wide bandwidth - 3V to 5.5V wide supply range - - 40°C to +110°C operating...