AD8391ARZ

Overview

The AD8391ARZ is a dual xDSL line driver amplifier operating on single or dual supplies from 3 V to 12 V. It delivers high output current exceeding 340 mA with low distortion, achieving –82 dBc SFDR at 100 kHz on a 12 V supply. The device features a 40 MHz bandwidth and a 375 V/µs slew rate. Quiescent current is typically 19 mA, supporting power-down modes for standby and shutdown.

Feature Summary

• Dual parallel amplifiers optimized for low-distortion xDSL line driving
• Single-pin digital control for full power, standby, and shutdown states
• High-speed XFCB process enabling wide bandwidth and fast slew rates
• Integrated mid-supply biasing via accessible VMID pin

Applications

• VoDSL modems
• xDSL USB, PCI, and PCMCIA cards
• Line-powered xDSL systems
• Battery backup xDSL modems

Procurement Notes

Verify component status as the datasheet indicates an obsolete classification. Confirm availability through authorized distributors or secondary markets. Ensure the ordering suffix matches the required package option, such as REEL or REEL7, for specific handling requirements.

Selection Notes

Select this component for applications requiring high output drive current into low impedance loads like telephone lines. Consider the thermal dissipation limits in the SOIC package when designing for high line power levels. Ensure adequate decoupling near power pins to maintain stability and noise performance.

Part Context

This part belongs to Analog Devices' high-speed linear amplifier portfolio fabricated on the XFCB process. It is designed specifically for customer premise equipment where low power consumption and high signal fidelity are critical for DSL transmission standards.

Replacement Considerations

No public confirmed substitutes are identified in the provided documentation. As the component is marked obsolete, alternative solutions may require redesigning the circuit for different pinouts or performance characteristics.