ADN2855ACPZ

The ADN2855ACPZ from Analog Devices is a specialized integrated circuit designed for burst mode clock and data recovery applications, particularly within GPON, BPON, and GEPON optical line terminal (OLT) receiver systems.

This IC operates at selectable data rates including 155.52 Mbps, 622.08 Mbps, 1244.16 Mbps, and 1250.00 Mbps. It features a patented dual-loop clock recovery architecture and a 12-bit acquisition time, ensuring precise data alignment. The device provides a 4-bit parallel LVDS output interface, compatible with DDR interfaces for FPGAs or digital ASICs, and includes an integrated PRBS generator and a loss-of-lock indicator.

Designed for single-supply operation at 3.3V, the ADN2855ACPZ consumes approximately 670 mW in serial output mode and 825 mW in deserializer mode. It operates within an ambient temperature range of -40°C to +85°C. The device is housed in a compact 5 mm × 5 mm, 32-lead LFCSP package, suitable for surface mounting.

Key features include an I2C interface for accessing optional functions, a byte rate reference clock, and support for DDR-compatible FPGAs. Its primary applications are in passive optical networks, making it a critical component for high-speed communication infrastructure.