ADN2526ACPZ-R7

Overview

The ADN2526ACPZ-R7 is a differential laser diode driver designed for direct modulation of packaged laser diodes with differential resistances from 5 Ω to 50 Ω. Operating at data rates up to 11.3 Gbps, it features active back-termination to absorb signal reflections and ensure optical eye quality. The device operates on a single 3.3 V supply, drawing 46 mA typical current. It supports bias currents from 10 mA to 100 mA and differential modulation currents from 10 mA to 80 mA. Key electrical parameters include 150 mV p-p differential input sensitivity and typical 24 ps rise/fall times. It is housed in a compact 3 mm × 3 mm LFCSP-16 package.

Feature Summary

• Active back-termination absorbs signal reflections from the TOSA end of output transmission lines
• Supports full back-termination of output transmission lines for improved signal integrity
• Includes automatic laser shutdown (ALS) and cross point adjustment (CPA) functions
• Provides XFP-compliant bias current monitor capability

Applications

• SONET OC-192 and SDH STM-64 optical transceivers
• 10 Gb Fibre Channel transceivers
• 10 Gb Ethernet optical transceivers
• SFP+/XFP/X2/XENPAK/XPAK/MSA 300 optical modules

Procurement Notes

Verify the specific suffix R7 against official Analog Devices documentation to confirm tape-and-reel packaging compatibility. Confirm that the ADN2526ACPZ-R7 designation aligns with the manufacturer's current ordering part number structure. Ensure the component meets RoHS compliance requirements as specified in the datasheet. Validate that the LFCSP-16 package dimensions match the target PCB layout constraints.

Selection Notes

Select this driver for applications requiring differential laser diode modulation with active back-termination. It is suitable for compact modules where laser diodes are packaged in low pin-count optical subassemblies. The device offers enhanced ESD protection and SFP+ MSA compliance. Consider its 3.3 V operation and small footprint when designing space-constrained optical transceiver circuits.

Part Context

The ADN2526 belongs to the ADN2526 series of laser drivers from Analog Devices. It is an SFP+ MSA-compliant device designed for high-speed optical communication systems. The component integrates bias and modulation control functions into a single chip, simplifying the design of optical transceivers. It is distinct from similar models like the ADN2525 by its specific data rate and termination characteristics.

Replacement Considerations

The ADN2525 is a related component offering 10.7 Gbps operation with active back-termination. Verify functional compatibility regarding data rates and drive capabilities before substitution.