AD8018ARU

Overview

The AD8018ARU is a dual high-speed current feedback amplifier in a 14-lead TSSOP package. It operates on a single supply from 3.3 V to 8 V with a typical quiescent current of 9 mA per amplifier. Key electrical parameters include a 130 MHz bandwidth, 300 V/µs slew rate, and 400 mA output current drive capability. The device features rail-to-rail output swing, low noise density of 4.5 nV/√Hz, and digital logic inputs for full power, standby, or shutdown modes.

Feature Summary

• Rail-to-rail output voltage swing with high current drive capability
• Digital logic control for selectable full power, standby, and shutdown modes
• Low distortion performance optimized for xDSL line driving applications

Applications

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

Procurement Notes

Verify the specific ordering suffix matches the required package type. The AD8018ARU designation corresponds to the 14-lead Plastic RU-14 TSSOP package. Confirm temperature range requirements align with the specified -40°C to +85°C operating window. Ensure logic level compatibility for PWDN pins if power management features are utilized in the design.

Selection Notes

Select this component when high output current and low distortion are critical for driving low impedance loads. The current feedback architecture provides bandwidth stability independent of closed-loop gain. Consider thermal dissipation limits when operating near maximum supply voltages or delivering high line power. The TSSOP package offers a compact solution for space-constrained customer premise equipment designs.

Part Context

This part belongs to the AD8018 family of high-speed amplifiers designed specifically for xDSL applications. The family includes variants in 8-lead SOIC and 14-lead TSSOP packages. The AD8018ARU specifically denotes the TSSOP version with digital power-down controls, distinguishing it from the simpler 8-lead SOIC variant which lacks these logic inputs.

Replacement Considerations

Direct functional replacements within the same package and pinout configuration are not explicitly documented in the provided source material. Designers should verify pin compatibility and electrical parameter overlaps carefully when considering alternative high-speed current feedback amplifiers from other manufacturers.