AD8018ARUZ-REEL7

Overview

The AD8018ARUZ-REEL7 is a dual high-speed current feedback amplifier designed for xDSL line driving applications. It operates on a single supply voltage ranging from 3.3 V to 8 V, with typical operation at 5 V. The device delivers a large signal bandwidth of 130 MHz and a slew rate of 300 V/µs. It provides rail-to-rail output swing and can drive up to 400 mA into a differential load while maintaining low distortion characteristics.

Feature Summary

• Rail-to-rail output voltage capability with high output current drive
• Low noise performance with 4.5 nV/√Hz voltage noise density
• Flexible power management via two logic bits for full power, standby, and shutdown modes
• Optimized for driving transformer-coupled lines in customer premise equipment

Applications

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

Procurement Notes

Verify the package type matches the required PCB footprint, as the AD8018 series includes both 8-lead SOIC and 14-lead TSSOP options. Confirm that the specific REEL7 suffix corresponds to the tape and reel packaging format needed for automated assembly processes. Ensure compatibility with the intended operating temperature range of -40°C to +85°C.

Selection Notes

Select this component when designing systems requiring high output current and wide bandwidth under a single 5 V supply. The current feedback architecture offers gain-independent bandwidth, simplifying compensation compared to voltage feedback amplifiers. Consider the available standby and shutdown modes if power efficiency during idle states is a critical design constraint.

Part Context

This part belongs to the AD8018 family of high-speed amplifiers fabricated using Analog Devices' XFCB process. The ARU designation indicates the 14-lead TSSOP package variant. The REEL7 suffix specifies the bulk tape and reel shipping configuration, distinguishing it from tube or cut tape packaging options within the same electrical specification set.

Replacement Considerations

Direct functional replacements within the same package must maintain the 130 MHz bandwidth and 400 mA output current capabilities. Verify that any substitute supports the same 3.3 V to 8 V supply range and offers comparable rail-to-rail output swing. Check pinout compatibility, particularly regarding the PWDN logic pins present on the TSSOP package.