AD8398ACPZ-R7

Overview

The AD8398ACPZ-R7 is a dual wideband high output current operational amplifier designed for single port VDSL2 line driver applications with shutdown capability. It operates from a single 12 V or dual ±6 V supply, delivering an 18.4 V p-p differential swing and 450 mA peak linear output current. The device features an 85 MHz bandwidth at a differential gain of 5, a slew rate of 600 V/µs, and low distortion characteristics including -65 dBc MTPR for Profile 8b.

Feature Summary

• Integrated power management via CMOS-compatible PD0 and PD1 pins enabling four distinct operating modes including complete power-down.
• High-speed voltage feedback architecture providing exceptional multitone power ratio (MTPR) and common-mode stability.
• Thermally enhanced 4 mm × 4 mm 16-lead LFCSP package with an electrically isolated exposed paddle.

Applications

• ADSL2+/VDSL2 CO/CPE line drivers
• PLC line drivers
• Consumer xDSL modems
• Twisted pair line drivers

Procurement Notes

Verify the specific suffix against the manufacturer's ordering guide to confirm packaging format. The R7 designation indicates reel packaging. Confirm RoHS compliance status as indicated by the Z suffix in the base model number. Ensure the component meets the industrial temperature range requirements of -40°C to +85°C for the intended deployment environment.

Selection Notes

Select this component for applications requiring high differential output swing and significant peak current drive capabilities on twisted pair lines. The integrated shutdown functionality allows for effective power conservation when the line driver is inactive. Consider the thermal resistance characteristics of the LFCSP package when designing the PCB layout to ensure junction temperatures remain within safe operating limits.

Part Context

This part belongs to the AD8398A series of specialized amplifiers manufactured by Analog Devices. It is specifically engineered for broadband communication interfaces, distinguishing itself through its ability to handle high-frequency signals while maintaining linearity under heavy load conditions typical in digital subscriber line infrastructure.

Replacement Considerations

Public confirmed substitutes include the AD8398ACPZ-RL and AD8398AACPZ-R2 variants within the same family. These alternatives share identical electrical specifications and pinouts but differ in shipping packaging formats. Verify that any replacement maintains the required 16-lead LFCSP footprint and thermal performance characteristics.