AD8018ARUZ

Overview

The AD8018ARUZ 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 into a 10 Ω differential load. The device features rail-to-rail output swing, 4.5 nV/√Hz voltage noise density, and 54 dB common-mode rejection ratio.

Feature Summary

• Rail-to-rail output capability driving low-distortion signals within 0.5 V of supply rails
• High output current drive of 400 mA into differential loads for xDSL applications
• Two digital logic bits enable full power, standby, and shutdown modes for power management

Applications

• xDSL USB, PCI, or PCMCIA-based Customer Premise Equipment (CPE)
• Consumer DSL modems requiring single-supply operation
• Twisted pair line drivers for ADSL, SDSL, and VDSL systems

Procurement Notes

Verify the specific ordering suffix to confirm the 14-lead TSSOP package configuration. Confirm that the PWDN logic pins are utilized correctly for power-down mode selection if low-power operation is required. Ensure decoupling capacitors are placed close to the supply pins to maintain stability and performance.

Selection Notes

Select this component for applications requiring high output current and wide bandwidth on a single supply. The current feedback architecture provides bandwidth largely independent of closed-loop gain. Consider thermal dissipation limits when operating at higher supply voltages or delivering maximum line power.

Part Context

The AD8018 is part of Analog Devices' high-speed amplifier portfolio designed for xDSL line driving. It utilizes the XFCB process to achieve high bandwidth and low distortion. The ARUZ suffix denotes the 14-lead TSSOP package variant, distinct from the 8-lead SOIC options available in the same family.

Replacement Considerations

Publicly confirmed substitutes are not identified in the provided documentation. Verify pin compatibility and electrical specifications against alternative dual high-speed amplifiers before implementation.