ADN2873ACPZ

Overview

The ADN2873ACPZ is a single-loop laser diode driver designed for SFP and SFF modules compliant with SFF-8472 digital diagnostics. It supports NRZ data transmission from 50 Mbps to 4.25 Gbps. The device operates on a 3.3 V supply and features automatic average power control, laser fail alarm, and automatic laser shutdown. It accommodates bias currents from 2 mA to 100 mA and modulation currents from 5 mA to 90 mA. The component utilizes a 24-lead, 4 mm × 4 mm LFCSP package.

Feature Summary

• Supports NRZ data transmission rates ranging from 50 Mbps up to 4.25 Gbps
• Integrates automatic average power control and laser fail alarm mechanisms
• Includes automatic laser shutdown functionality to prevent system transient issues
• Compatible with VCSEL, DFB, and FP laser types

Applications

• 1×/2×/4× Fibre Channel SFP/SFF modules
• Multirate OC3 to OC48-FEC SFP/SFF modules
• LX-4 modules
• DWDM/CWDM laser transmitters
• HDTV (SMPTE family) laser transmitters

Procurement Notes

Verify the specific suffix ACPZ against the manufacturer's official datasheet to confirm pinout and thermal pad configuration. Confirm that the selected variant aligns with the required SFF-8472 compliance and data rate specifications for your target optical module design. Ensure compatibility with the intended laser type before finalizing procurement.

Selection Notes

Select this component when designing SFP or SFF optical transceivers requiring single-loop control architecture. It is suitable for applications needing support for multiple laser technologies including VCSEL, DFB, and FP lasers. Consider the 3.3 V supply requirement and the specific bias and modulation current ranges when sizing external components.

Part Context

This part belongs to the ADN287x series of laser drivers from Analog Devices. It shares functional similarities with the ADN2870 but offers enhanced speed capabilities up to 4.25 Gbps and improved alarm schemes. The device is positioned for high-speed serial communication interfaces in compact form factor modules.

Replacement Considerations

The ADN2870 is noted as pin-compatible with the ADN2873. Verify if the lower maximum data rate of the ADN2870 meets the specific application requirements before substitution.