The ACPL-C87A is a precision miniature isolation amplifier manufactured by Avago Technologies (now Broadcom). This device is designed for voltage and current sensing in various applications, including motor drives, power inverters, and renewable energy systems. It provides accurate signal isolation with high common-mode transient immunity and excellent linearity.

Applications

• Voltage sensing in motor drives
• Current sensing in solar inverters
• Power supply feedback control
• Isolated analog signal transmission
• Electric vehicle battery management systems

Features

• High accuracy: 1% gain tolerance
• High linearity: 0.1% nonlinearity
• High common-mode rejection (CMR): 85 dB
• High isolation voltage: 5 kVrms for 1 minute
• Wide operating temperature range: -40°C to +105°C
• Compact, surface-mountable package

Benefits

• Provides accurate voltage and current measurements
• Enables precise control in power electronics systems
• Robust performance in harsh industrial environments
• Offers a high level of safety through galvanic isolation
• Suitable for a wide range of operating conditions
• Saves board space due to its small size

Additional Details

The ACPL-C87A isolation amplifier utilizes sigma-delta modulation to achieve high accuracy and linearity. It has a differential input and a single-ended output. The high CMR ensures accurate signal transmission even in noisy environments. The 5 kVrms isolation voltage provides a high level of electrical isolation between the input and output circuits, enhancing safety and reliability. The wide operating temperature range makes it suitable for use in demanding industrial applications.

The combination of high accuracy, excellent linearity, and robust isolation capabilities makes the ACPL-C87A an ideal choice for voltage and current sensing in a variety of industrial and automotive applications. Its small size and surface-mountable package allow for easy integration into compact electronic designs.