FOD2742CR2V

Overview

The FOD2742CR2V is a single-channel optically isolated error amplifier manufactured by onsemi. It integrates an AlGaAs infrared LED emitter with an NPN phototransistor output in a compact SOIC-8 package. The device provides high-speed signal transmission with a typical propagation delay of 1 microsecond and a transition time of 0.5 microseconds. It features a high current transfer ratio of up to 600 percent at 1 milliamp input current, ensuring accurate analog signal isolation. The unit operates within a temperature range of -25°C to +85°C and supports an insulation voltage of 2500 VRMS.

Feature Summary

• Integrates an AlGaAs infrared LED with an NPN phototransistor for efficient optical coupling
• Designed specifically as an error amplifier for precise analog signal isolation
• Provides high common-mode transient immunity to reject noise in switching environments
• Offers a compact SOIC-8 surface-mount footprint suitable for space-constrained designs

Applications

• Switching power supply feedback loops
• Motor control circuit isolation
• Industrial process control systems

Procurement Notes

Verify the specific suffix 'R2V' confirms the tape-and-reel packaging format required for automated assembly processes. Confirm the component status as active or obsolete through official onsemi channels prior to design finalization. Ensure compliance with RoHS directives if applicable to the target market. Cross-reference the datasheet revision date to guarantee alignment with current electrical specifications and mechanical drawings.

Selection Notes

Select this component when analog accuracy is critical in isolated feedback paths. The high current transfer ratio minimizes gain errors compared to standard digital optocouplers. Consider the SOIC-8 package dimensions for PCB layout constraints. Evaluate the operating temperature range against the environmental conditions of the final application to ensure reliable performance over the product lifecycle.

Part Context

This part belongs to the FOD2742B series of linear optocouplers from onsemi. The series is engineered for applications requiring high linearity and speed. The CR2V designation indicates the specific reel packaging configuration. This family serves as a bridge between digital isolation and analog precision in power management circuits.

Replacement Considerations

Check for direct pin-compatible alternatives within the same manufacturer's portfolio that maintain identical electrical characteristics. Verify that any substitute offers comparable current transfer ratio and propagation delay specs. Ensure the replacement package matches the SOIC-8 form factor for seamless board integration.