ADN2814ACPZ-RL7

Overview

The ADN2814ACPZ-RL7 is a continuous-rate clock and data recovery IC with an integrated limiting amplifier, manufactured by Analog Devices Inc. It supports serial data input rates from 10 Mb/s to 675 Mb/s without requiring an external reference clock or programming. The device provides quantization, signal level detection, and clock/data recovery functions. It operates on a single 3 V to 3.6 V supply, consuming 435 mW typical power. Key features include adjustable slice levels, loss-of-signal detection, and LVDS outputs. It is housed in a 32-lead LFCSP package.

Feature Summary

• Supports continuous data rates from 10 Mb/s to 675 Mb/s
• Exceeds SONET jitter transfer, generation, and tolerance requirements
• Integrated limiting amplifier with 3.3 mV typical quantizer sensitivity
• Adjustable slice level (±95 mV) and independent loss-of-signal detector

Applications

• SONET OC-1/-3/-12 and associated FEC rates
• ESCON and Fast Ethernet interfaces
• Serial digital interfaces for DTV
• WDM transponders and regenerators/repeaters
• Broadband cross-connects and routers

Procurement Notes

Verify the specific ordering suffix RL7 corresponds to reel packaging when sourcing. Confirm that the 32-LFCSP-WQ (5x5) package variant matches the design-in requirements. Ensure compatibility with the 3 V to 3.6 V supply voltage range and -40°C to +85°C operating temperature specifications for the target application environment.

Selection Notes

Select this component for applications requiring automatic lock to data signals without external reference clocks. It is suitable for fiber optic receiver implementations when paired with a PIN diode and TIA preamplifier. Consider the 100 Ω differential output impedance and LVDS output swing of 320 mV typical for interface matching. Verify I2C interface timing requirements if accessing optional features via internal registers.

Part Context

This part belongs to the ADN2814 series of clock and data recovery ICs. It is designed as a highly integrated solution for optical communication receivers. The device eliminates the need for external components typically required for CDR functionality, such as separate limiters and loop filters, thereby reducing board space and power consumption in high-speed serial data applications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative CDR ICs based on data rate compatibility (up to 675 Mb/s), package footprint (32-LFCSP), and electrical specifications such as jitter tolerance and supply voltage.

FAQ

Does the ADN2814 require an external reference clock?

No, the ADN2814 automatically locks to input data signals without the need for an external reference clock or extra programming.

What is the typical quantizer sensitivity of the ADN2814?

The typical quantizer sensitivity is 3.3 mV p-p for a BER of 1 × 10⁻¹⁰.

How is the Loss-of-Signal (LOS) threshold adjusted?

The LOS detect range is user-adjustable via the THRADJ pin, allowing configuration between approximately 2.3 mV and 19 mV depending on the resistor value connected.