ADN2805ACPZ-RL7

Overview

The ADN2805ACPZ-RL7 is a clock and data recovery IC designed for SONET/SDH applications. It locks to 1.25 Gbps NRZ serial data without requiring an external reference clock or programming. The device features a patented architecture with CML differential inputs and LVDS differential outputs. It operates on a single 3.3 V supply (3.0 V to 3.6 V range) with typical power consumption of 390 mW. Key specifications include 0.003 UI rms jitter generation, 0.749 UI p-p jitter tolerance at 637 kHz, and a lock-to-data acquisition time of 1.5 ms. It is housed in a 32-lead LFCSP package.

Feature Summary

• Locks to 1.25 Gbps NRZ data automatically without external reference clock
• CML differential input and LVDS differential output interfaces
• Low jitter generation of 0.003 UI rms and jitter peaking < 0.03 dB
• I2C interface for optional feature access and register configuration

Applications

• GbE line cards
• SONET/SDH signal regeneration
• Clock and data recovery for 1.25 Gbps serial links

Procurement Notes

Verify the specific ordering suffix RL7 corresponds to the reel packaging format required for your assembly process. Confirm that the 32-LFCSP-WQ (5x5) package dimensions align with your PCB footprint design. Ensure the I2C slave address configuration via Pin 19 meets your system bus requirements.

Selection Notes

Select this component when a fixed 1.25 Gbps rate is sufficient, as it does not support variable rates like the ADN2818. Verify that the input signal provides at least 200 mV p-p differential swing for proper quantization. Check if the 390 mW power dissipation fits within your thermal budget for the 32-lead LFCSP package.

Part Context

This part belongs to the ADN2805 series of clock and data recovery ICs from Analog Devices. It is functionally similar to the ADN2815 but optimized specifically for the 1.25 Gbps rate rather than a continuous rate range. It shares the same 32-lead LFCSP package form factor as other devices in the family.

Replacement Considerations

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