The ACPL-847-500E is a high-gain, quad-channel analog optocoupler designed for signal isolation and amplification in various electronic applications. Manufactured by AVAGO TECHNOLOGIES LIMITED, it provides electrical isolation between input and output circuits while maintaining analog signal fidelity.

Applications

• Analog signal isolation in industrial process control systems.
• Instrumentation amplifiers for high-accuracy measurements.
• Voltage and current sensing in power supplies.
• Medical equipment for patient monitoring.
• Data acquisition systems.
• General purpose analog isolation.

Features

• Quad-channel configuration for high density applications.
• High current transfer ratio (CTR).
• Excellent linearity for accurate signal transmission.
• Low input current requirements.
• Wide operating temperature range.
• Compact surface-mount package.
• High isolation voltage.

Benefits

• Improved system safety through galvanic isolation.
• Enhanced noise immunity and signal integrity.
• Reduced ground loop interference.
• Simplified circuit design.
• Increased reliability in harsh environments.
• Compliance with safety regulations.
• Cost-effective isolation solution.

Additional Details

The ACPL-847-500E consists of four independent channels, each comprising an LED and a phototransistor. When an analog signal is applied to the LED, the emitted light modulates the phototransistor current proportionally. This process allows the analog signal to be transmitted across the isolation barrier without a direct electrical connection. The high CTR of this optocoupler minimizes the input current required for a given output current, which is beneficial in low-power applications.

The device's linearity is critical for preserving the shape and amplitude of the analog signal during transmission. This is achieved through careful design and manufacturing processes. The isolation voltage rating ensures that the optocoupler can withstand high voltage differences between the input and output circuits without breakdown. The ACPL-847-500E is commonly used in applications where safety isolation and accurate analog signal transfer are paramount. The wide operating temperature range makes it suitable for use in both indoor and outdoor environments.