ADN2805ACPZ

Overview

The ADN2805ACPZ is a 1.25 Gbps Clock and Data Recovery (CDR) IC designed for SONET/SDH applications. It automatically locks to NRZ serial data without an external reference clock or programming, utilizing a patented delay- and phase-locked loop architecture. The device accepts CML differential inputs and provides LVDS differential outputs for recovered clock and data. Operating on a single 3.3 V supply, it consumes approximately 390 mW typical power. Key features include a loss-of-lock indicator, I²C interface for configuration, and compliance with all SONET jitter requirements.

Feature Summary

• Automatic lock to 1.25 Gbps NRZ data without external reference clock
• Patented PLL/DLL architecture minimizes jitter peaking
• Single-supply operation at 3.3 V with low power consumption (390 mW typ.)
• I²C interface for optional feature access and register control

Applications

• GbE line cards
• SONET/SDH signal regeneration
• Clock recovery in high-speed serial links

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors. Confirm RoHS compliance status prior to integration. Check for moisture sensitivity level (MSL 3) handling requirements during storage and assembly. Ensure the specific package variant matches the design footprint.

Selection Notes

Select this component for fixed-rate 1.25 Gbps applications requiring automatic frequency acquisition. It is suitable where jitter peaking must be minimized in cascaded regenerators. Verify that input signals meet the CML voltage range and output loads are compatible with LVDS specifications.

Part Context

The ADN2805 belongs to the ADN28xx series of clock and data recovery devices from Analog Devices. It shares architectural similarities with other members like the ADN2806 but is optimized specifically for the 1.25 Gbps data rate standard used in SONET/SDH and Gigabit Ethernet environments.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.