ADN2848ACPZ-32-RL7

Overview

The ADN2848ACPZ-32-RL7 is a dual-loop laser diode driver from Analog Devices, designed for optical transmission applications. It supports data rates ranging from 50 Mbps to 1.25 Gbps and operates on a single 3.3 V supply. The device integrates closed-loop control for both average power and extinction ratio, requiring minimal external components. Key electrical specifications include a bias current range of 2 mA to 100 mA, a modulation current range of 5 mA to 80 mA, and a monitor photodiode current capability of 50 μA to 1200 μA. The typical supply current is 50 mA at 3.3 V. It is housed in a 32-lead, 5 mm × 5 mm LFCSP_VQ package.

Feature Summary

• Integrates dual-loop control algorithms for simultaneous regulation of laser average power and extinction ratio following factory setup.
• Provides programmable alarm functions for detecting laser failure and degradation conditions.
• Supports automatic laser shutdown (ALS) functionality to ensure safety compliance.
• Enables optional clocked data input and Forward Error Correction (FEC) rate support.

Applications

• SONET OC-1/3/12/24 systems
• SDH STM-0/1/4 networks
• Fibre Channel interfaces
• Gigabit Ethernet links

Procurement Notes

Verify the specific suffix 'ACPZ-32-RL7' against official Analog Devices documentation to confirm package type and reel quantity. Ensure compatibility with existing PCB footprints for the 32-lead LFCSP_VQ format. Check for moisture sensitivity level requirements during storage and handling. Confirm that the operating temperature range meets system environmental specifications. Validate that the single 3.3 V supply aligns with the target board power architecture.

Selection Notes

Select this component when designing optical transceivers requiring integrated power and extinction ratio control without complex external circuitry. It is suitable for applications needing programmable alarms for laser health monitoring. Consider its 50 Mbps to 1.25 Gbps speed range for standard telecommunications and datacom links. Evaluate the low external component count benefit for space-constrained designs. Ensure the required bias and modulation current ranges fit the specific laser diode characteristics.

Part Context

This part belongs to the ADN2848 family of laser drivers manufactured by Analog Devices. It is specifically engineered for high-performance optical communication modules. The device simplifies design by integrating control loops typically handled by discrete components. It targets the SONET/SDH and Ethernet markets where reliability and compact size are critical. The LFCSP_VQ package facilitates surface-mount assembly in dense layouts.

Replacement Considerations

Official substitutes within the ADN2848 series may include variants with different speed ratings or package options, such as the ADN2841 or ADN2847, provided they meet the specific application's data rate and interface requirements. Verify pin-to-pin compatibility and electrical parameter alignment before substitution.