AD8018AR-REEL

Overview

The AD8018AR-REEL is a dual high-speed current feedback amplifier designed for single-supply xDSL applications. It operates on a supply voltage range of 3.3 V to 8 V with a typical quiescent current of 9 mA per amplifier. The device delivers a slew rate of 300 V/µs and a –3 dB bandwidth of 130 MHz at unity gain. It provides rail-to-rail output swing and can drive 400 mA into a differential load while maintaining low distortion, specifically –86 dBc worst-case harmonic at 100 kHz.

Feature Summary

• Rail-to-rail output capability enabling maximum reach on 5 V supplies
• High output current drive of 400 mA into differential loads
• Low power consumption with 9 mA typical supply current per amplifier
• Integrated standby and shutdown modes via digital logic control

Applications

• xDSL USB, PCI, or PCMCIA cards
• Consumer DSL modems
• Twisted pair line drivers

Procurement Notes

Verify the specific package configuration against the ordering guide, as the AD8018 series includes both 8-lead SOIC and 14-lead TSSOP variants. Confirm that the REEL suffix corresponds to the required tape and reel packaging format for automated assembly processes. Ensure the component meets the necessary RoHS compliance standards for the target market.

Selection Notes

Select this component when designing single-supply systems requiring high output current and low distortion for xDSL signals. The current feedback architecture offers bandwidth stability independent of closed-loop gain. Consider the thermal dissipation limits in the SOIC package if operating near the maximum supply voltage of 8 V.

Part Context

This part belongs to the Analog Devices AD8018 family of specialized amplifiers. It is fabricated using the XFCB process to achieve high speed and low noise. The device is optimized for driving transformer-coupled lines in customer premise equipment, providing the necessary performance for ADSL, SDSL, and VDSL systems.

Replacement Considerations

Direct replacements within the same package and pinout are limited within the official documentation. Designers should verify compatibility with other high-speed current feedback amplifiers from Analog Devices, ensuring that input bias currents and transimpedance characteristics match the existing circuit design constraints.