FOD2711

Overview

The FOD2711 is an optically isolated amplifier manufactured by onsemi. It integrates a precision programmable shunt reference (AZ431L) with an NPN phototransistor output optocoupler in a single package. The device provides galvanic isolation with a rated insulation voltage of 5000 Vrms. It features a current transfer ratio ranging from 100% to 200% at a forward current of 10 mA. The component operates within a temperature range of -40°C to +85°C and supports a maximum output voltage of 30V with a channel current capacity of 50mA.

Feature Summary

• Integrates a precision programmable shunt reference with an optocoupler for compact error amplification
• Provides high-voltage galvanic isolation between input and output circuits
• Utilizes an NPN phototransistor output stage for signal transmission

Applications

• Switch-mode power supply feedback loops
• Isolated error amplifier circuits
• Industrial control systems requiring signal isolation

Procurement Notes

Verify the specific suffix designation when ordering, as packaging formats vary significantly across the product line. Standard bulk packages differ from tape-and-reel or cut-tape configurations. Confirm that the selected variant matches the required mounting style, whether through-hole or surface-mount, to ensure compatibility with the intended PCB layout and assembly process.

Selection Notes

Select this component when a combined reference and isolation function is required to reduce board space. Ensure the design accommodates the specified 5000 Vrms isolation rating for safety compliance. Verify that the operating temperature range meets the environmental conditions of the final application. Consider the current transfer ratio tolerance when designing the feedback loop gain.

Part Context

This device belongs to the FOD2711A series of optically isolated amplifiers. It represents a specialized integration where a voltage reference is coupled directly with an optical transmission element. This architecture simplifies the design of isolated power regulation circuits by eliminating the need for separate reference components and discrete coupling stages.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official manufacturer cross-reference guides for compatible alternatives.