AD8016AREZ-REEL

Overview

The AD8016 is a dual-channel current feedback amplifier designed for xDSL line drive interfaces. It operates on ±5 V to ±12 V supplies with a typical quiescent current of 12.5 mA per amplifier. Key electrical parameters include a 78 MHz bandwidth at G = +5, a 1000 V/μs slew rate, and a linear output current capability of 600 mA. The device delivers a 40 V peak-to-peak differential output voltage into a 50 Ω load and achieves a single-tone distortion of –75 dBc.

Feature Summary

• Integrated power management system allowing four programmable bias levels via digital logic inputs
• High output current drive capability suitable for low resistance loads in central office applications
• Current feedback architecture providing constant bandwidth characteristics across gain settings
• On-chip thermal shutdown protection with alarm signal generation

Applications

• ADSL central office line drivers
• HDSL2 interface circuits
• VDSL transmission systems
• Proprietary xDSL line driver designs

Procurement Notes

Verify the specific package variant against the ordering guide, as the AD8016 is available in 24-lead SOIC_W_BAT and 28-lead TSSOP_EP configurations. Confirm that the selected suffix corresponds to the required reel or tube packaging format. Ensure compatibility with the intended supply voltage range and logic levels for the power-down pins before finalizing procurement.

Selection Notes

Select this component when high output current and wide bandwidth are required for DSL applications. The device supports flexible power reduction through PWDN pins, making it suitable for systems requiring variable power states. Consider the thermal dissipation requirements based on the chosen package and PCB layout, as the exposed paddle aids heat removal but requires proper grounding.

Part Context

The AD8016 belongs to Analog Devices' family of high-speed operational amplifiers tailored for telecommunications. It utilizes a specialized XFCB process to achieve high performance while maintaining low power consumption. This part serves as a second-generation solution for DSL line drivers, offering improved efficiency compared to previous iterations.

Replacement Considerations

Public documentation confirms the AD8016 has been discontinued. Designers should evaluate alternative high-output current amplifiers from the manufacturer's portfolio that maintain similar pinouts and electrical specifications for xDSL applications.

FAQ

How is the keep-alive state achieved?

The keep-alive state is enabled by setting the PWDN1 and PWDN0 logic inputs to specific combinations (e.g., 0,1 or 1,0), which biases the output transistors to provide a low impedance at the amplifier outputs without drawing full quiescent current.

What is the function of the BIAS pin?

The BIAS pin allows continuous adjustment of the internal quiescent current. Pulling current out of this pin reduces the bias level, enabling fine-tuning of power consumption or triggering a full shutdown condition when a sufficient current sink is applied.

How does the device handle thermal overload?

The AD8016 incorporates thermal shutdown protection that activates at a junction temperature of 165°C. It returns to normal operation when the temperature drops to 140°C, cycling on and off if the overload persists, while generating an alarm signal via the BIAS pin.