AD8394AREZ-R7

Overview

The AD8394AREZ-R7 is a quad operational amplifier featuring high output current and low power consumption. It operates on dual supplies from ±6 V to ±12 V or single supplies from 12 V to 24 V. The device delivers a slew rate of 300 V/μs and maintains multi-tone intermodulation distortion (MTPR) down to −70 dBc. Internal power dissipation reaches 700 mW while driving a 20.4 dBm ADSL2+ signal with a crest factor of 5.5. Four bias modes are selectable via digital inputs, including three active modes and a shutdown state with low leakage current.

Feature Summary

• Four current feedback amplifiers optimized for high output current drive
• Selectable bias modes including three active states and low-leakage shutdown
• Low distortion performance suitable for precision line driver applications

Applications

• ADSL/ADSL2+ central office line drivers
• xDSL line drivers
• DAC output buffers
• Medical instrumentation circuits

Procurement Notes

Verify component status as the datasheet indicates an obsolete classification. Confirm availability through authorized channels or approved secondary markets. Ensure compatibility with existing thermal management solutions for the TSSOP_EP package. Validate supply voltage ranges against system requirements before integration.

Selection Notes

Select this component for applications requiring high peak current drive with minimal power dissipation. The dual-supply operation supports symmetric signal swings, while single-supply capability allows flexibility in lower voltage systems. Consider the thermal performance of the TSSOP_EP package when designing PCB layouts for continuous high-power operation.

Part Context

The AD8394 belongs to Analog Devices' specialized operational amplifier family designed for broadband communication interfaces. It integrates four independent amplifiers into a single thermally enhanced package. The AREZ suffix denotes the 20-lead TSSOP_EP variant, providing improved heat dissipation compared to standard packages for sustained high-current applications.

Replacement Considerations

No direct public substitutes are confirmed in the provided documentation. Due to the obsolete status, evaluate alternative high-output current quad amplifiers from current production lines. Verify pinout compatibility and electrical specifications such as slew rate and supply voltage range during transition planning.