AD8018ARU-REEL

Overview

The AD8018ARU-REEL is a dual high-speed current feedback amplifier designed for single-supply xDSL applications. It operates within a supply voltage range of 3.3 V to 8 V, with typical performance specified at 5 V. Key electrical parameters include a –3 dB bandwidth of 130 MHz and a slew rate of 300 V/µs. The device delivers a linear output current of 400 mA into a 10 Ω differential load while maintaining low distortion characteristics, such as an out-of-band SFDR of –82 dBc. Input noise density is typically 4.5 nV/√Hz.

Feature Summary

• Rail-to-rail output capability allowing signal drive within 0.5 V of power supply rails
• High output current drive of 400 mA into differential loads for transformer-coupled lines
• Dual logic control bits enabling full power, standby, and shutdown operational modes
• Low quiescent current consumption optimized for portable customer premise equipment

Applications

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

Procurement Notes

Verify the specific ordering suffix REEL7 against the manufacturer's official documentation to confirm tape-and-reel packaging specifications. Ensure the component matches the required temperature range of –40°C to +85°C. Cross-reference the datasheet revision to confirm pinout compatibility for the 14-lead TSSOP package before integration.

Selection Notes

Select this amplifier for designs requiring high output current and low distortion in single-supply environments. The current feedback architecture provides bandwidth stability independent of closed-loop gain. Consider the thermal dissipation limits when operating near maximum supply voltages or delivering high line power levels.

Part Context

This component belongs to the AD8018 family of high-speed amplifiers fabricated using Analog Devices' XFCB process. The family includes variants in 8-lead SOIC and 14-lead TSSOP packages. The AD8018 series is specifically engineered to meet the stringent reach and power requirements of ADSL, SDSL, and VDSL systems.

Replacement Considerations

The AD8018ARZ (SOIC-8) is a documented alternative within the same product family offering identical electrical performance in a different package style. Verify that the target application can accommodate the 8-lead Thermal Coastline SOIC footprint if substituting from the 14-lead TSSOP form factor.