AD8391AR-REEL

Overview

The AD8391AR-REEL is a dual xDSL line driver amplifier fabricated on Analog Devices' XFCB process. It operates on single supplies from 3 V to 12 V or equivalent dual rails, drawing a typical quiescent current of 19 mA. The device provides high output drive capability, delivering up to 340 mA linear output current while maintaining low distortion characteristics. Key electrical parameters include a –3 dB bandwidth of 40 MHz and a slew rate of 375 V/µs at 12 V supply. It features a flexible power-down function with standby and shutdown modes, making it suitable for battery-powered applications.

Feature Summary

• Dual parallel amplifiers optimized for low-power xDSL systems
• High output current drive exceeding 340 mA with low distortion
• Single-pin logic-controlled power-down with three operating states
• Compact 8-lead SOIC thermal coastline package

Applications

• VoDSL modems
• xDSL USB, PCI, and PCMCIA cards
• Line powered xDSL modems
• Battery backup xDSL modems

Procurement Notes

Verify the obsolete status of this component before procurement planning. Confirm that the REEL suffix indicates tape and reel packaging compatible with automated assembly equipment. Ensure the specific lot date code meets project requirements as availability may be limited due to end-of-life status.

Selection Notes

Select this part for designs requiring high current drive into low impedance loads such as telephone lines. Consider the 3 V to 12 V supply range for compatibility with various system voltages. Evaluate thermal dissipation requirements based on the 650 mW maximum power dissipation rating in the SOIC package. Verify that the 40 MHz bandwidth meets the signal frequency requirements of the application.

Part Context

The AD8391 belongs to the family of high-speed line driver amplifiers designed by Analog Devices. It utilizes the proprietary eXtra Fast Complementary Bipolar (XFCB) process to achieve high bandwidth and low distortion. This component serves as a specialized solution for driving twisted pair lines in digital subscriber line applications where power efficiency and signal integrity are critical.

Replacement Considerations

This component is marked as obsolete. No direct public confirmed substitutes are listed in the provided documentation. Designers should consult Analog Devices for current replacement recommendations or evaluate alternative line drivers with similar current drive and bandwidth specifications.