ADN2848ACPZ-32-RL

Laser Drivers Overview

The ADN2848ACPZ-32-RL is a dual-loop laser diode driver from Analog Devices, designed for operation at data rates between 50 Mbps and 1.25 Gbps. It functions on a single 3.3 V supply with a typical supply current of 50 mA. The device integrates closed-loop control for both average optical power and extinction ratio, requiring minimal external components. Key electrical parameters include a bias current range of 2 to 100 mA, a modulation current range of 5 to 80 mA, and support for monitor photodiode currents from 50 μA to 1200 μA. It is housed in a 32-lead, 5 mm × 5 mm LFCSP_VQ package.

Laser Drivers Feature Summary

• Integrates closed-loop control algorithms for simultaneous regulation of average optical power and extinction ratio following factory setup.
• Provides programmable alarm outputs for detecting laser fail conditions indicating end-of-life and laser degrade signaling impending failure.
• Supports automatic laser shutdown (ALS) functionality to protect the laser diode during fault conditions.
• Features full current parameter monitoring capabilities for comprehensive system diagnostics and operational verification.

Laser Drivers Applications

• SONET OC-1/3/12/24 systems
• SDH STM-0/1/4 networks
• Fibre Channel interfaces
• Gigabit Ethernet connections

Laser Drivers Procurement Notes

Verify the specific suffix 'ACPZ-32-RL' against the manufacturer's official datasheet to confirm the package type, tape-and-reel quantity, and RoHS compliance status. Ensure that the ordering information matches the exact part number required for your design, as suffixes may indicate variations in packaging or environmental specifications that do not alter the core electrical function.

Laser Drivers Selection Notes

Select this component when designing optical transmitters requiring integrated power and extinction ratio control within a 50 Mbps to 1.25 Gbps bandwidth. The single 3.3 V supply requirement and low external component count make it suitable for space-constrained applications. Consider the available bias and modulation current ranges to ensure compatibility with the target laser diode specifications.

Laser Drivers Part Context

This part belongs to the ADN2848 family of laser drivers manufactured by Analog Devices. It is distinct from other series like the ADN2841 or ADN2847, which may support different data rates or voltage requirements. The ADN2848 specifically targets the 1.25 Gbps market segment with integrated dual-loop control, differentiating it from simpler open-loop drivers or higher-speed variants.

Laser Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Users should consult the manufacturer's official replacement guide or contact technical support directly for validated alternatives.

Laser Drivers FAQ

Does the ADN2848 require external components for power and extinction ratio control?

No, both power and extinction ratio control are fully integrated into the device, minimizing the need for external components after initial factory setup.

What alarm features are included in the ADN2848?

The device provides programmable alarms for laser fail (end of life) and laser degrade (impending fail), along with support for automatic laser shutdown.