ADN2812ACP

Overview

The ADN2812ACPZ is a continuous rate clock and data recovery (CDR) integrated circuit with an integrated limiting amplifier, manufactured by Analog Devices Inc. It supports serial data input rates from 12.3 Mb/s to 2.7 Gb/s without requiring an external reference clock or programming. The device meets SONET jitter requirements for transfer, generation, and tolerance. Key electrical parameters include a typical quantizer sensitivity of 6 mV, adjustable slice levels of ±100 mV, and a loss of signal detect range of 3 mV to 15 mV. It operates on a single 3.3 V supply with a typical power consumption of 750 mW. The component is housed in a compact 5 mm × 5 mm 32-lead LFCSP package.

Feature Summary

• Continuous data rate support from 12.3 Mb/s to 2.7 Gb/s with automatic locking capability
• Exceeds SONET requirements for jitter transfer, generation, and tolerance
• Integrated limiting amplifier with 6 mV typical quantizer sensitivity
• Loss of signal (LOS) detection with user-adjustable threshold and hysteresis

Applications

• SONET OC-1/OC-3/OC-12/OC-48 and associated FEC rates
• Fibre Channel, 2× Fibre Channel, GbE, and HDTV systems
• WDM transponders and regenerators/repeaters
• Broadband cross-connects and routers

Procurement Notes

Verify the specific ordering suffix when purchasing. The ADN2812ACPZ typically denotes the tray package variant, while ADN2812ACPZ-RL7 indicates reel packaging. Confirm availability status as distribution channels may report limited stock or discontinuation for certain suffixes. Ensure the selected package matches the PCB footprint requirements for the 32-LFCSP-WQ (5x5) form factor.

Selection Notes

Select the ADN2812ACPZ for applications requiring a continuous rate CDR with an integrated limiting amplifier. The device eliminates the need for external reference clocks, simplifying design for protocol-independent WDM systems. Consider the 750 mW typical power dissipation and thermal resistance of 28°C/W for heat management. The I2C interface allows access to optional features such as data rate readback and squelch modes.

Part Context

The ADN2812 belongs to the ADN28xx series of clock and data recovery ICs designed for optical network applications. It serves as a receiver solution that, when paired with a PIN diode and TIA preamplifier, forms a highly integrated fiber optic receiver. The device is part of Analog Devices' portfolio addressing SONET/SDH and high-speed digital communication standards.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should evaluate other members of the ADN28xx family, such as the ADN2815 or ADN2817, for potential compatibility, though pinouts and specifications may differ.