AD8016AREZ-REEL7

Overview

The AD8016 is a low-power, high-output current dual amplifier designed for xDSL line driver applications. It delivers full ADSL central office performance on ±12 V supplies with a typical supply current of 12.5 mA per amplifier. The device provides 600 mA linear output current and 40 V p-p differential output voltage into a 50 Ω load. Key electrical parameters include a 78 MHz bandwidth at G = +5, a 1000 V/μs slew rate, and –75 dBc single-tone distortion at 1 MHz.

Feature Summary

• Integrated digital power management allowing four programmable bias levels via PWDN logic inputs
• High output current capability of 600 mA to drive low resistance loads
• On-chip thermal shutdown protection with alarm signal generation
• Low quiescent current operation reducing total power dissipation during standby

Applications

• ADSL central office line drivers
• HDSL2 interface circuits
• VDSL system terminals
• Proprietary xDSL line drivers

Procurement Notes

Verify the specific package variant required, as the AD8016 is available in 24-lead SOIC_W_BAT and 28-lead TSSOP_EP formats. Confirm that the ordering suffix corresponds to the desired reel quantity and tape-and-reel configuration. Ensure compatibility with the intended PCB footprint, particularly regarding the exposed paddle on the TSSOP_EP version which is not internally connected.

Selection Notes

Select the AD8016 when high output current and low power consumption are critical for xDSL applications. The device supports flexible power-down states to optimize efficiency without sacrificing signal integrity. Consider the thermal requirements and PCB layout guidelines provided in the datasheet to manage power dissipation effectively, especially when driving low impedance loads at high voltages.

Part Context

This component belongs to Analog Devices' family of high-speed current feedback amplifiers tailored for telecommunications interfaces. The AD8016 specifically addresses the needs of DSL systems by combining high drive capability with advanced power management features. Its design enables efficient operation in both central office and customer premise equipment environments.

Replacement Considerations

Publicly confirmed substitutes are not identified in the provided documentation. Designers should evaluate alternative high-current operational amplifiers based on bandwidth, output current, and package compatibility if direct replacement is necessary.

FAQ

How is the quiescent current adjusted?

Quiescent current can be adjusted using two digital logic pins (PWDN1, PWDN0) to select four bias levels or by pulling current out of the BIAS pin for continuous adjustment.

What happens during a thermal overload condition?

The device shuts down at a junction temperature of 165°C and resumes operation at 140°C. The BIAS pin voltage drops to the negative rail during this cycle, which can be used to trigger an alarm.

Is the exposed paddle electrically connected?

No, the exposed paddle on the TSSOP_EP package is floating and not electrically connected internally, though it aids in thermal dissipation.