ADN2841ACPZ-32

Overview

The ADN2841ACPZ-32 is a dual-loop laser diode driver from Analog Devices, designed for optical communication systems. It supports data rates from 50 Mbps to 2.7 Gbps with typical rise/fall times of 80 ps. The device operates on a single 5 V supply and features integrated closed-loop control for average power and extinction ratio. It includes bias current ranging from 2 mA to 100 mA and modulation current from 5 mA to 80 mA. The component is housed in a 32-lead LFCSP package and functions as a reduced-functionality variant compared to the 48-lead version.

Feature Summary

• Dual-loop control algorithm manages both average optical power and extinction ratio after factory setup.
• Integrated circuitry supports dual monitor photodiode functionality for DWDM wavelength fixing.
• Includes programmable alarms for laser fail and laser degrade conditions with automatic shutdown capability.

Applications

• DWDM dual MPD wavelength fixing
• SONET OC-1/3/12/48
• SDH STM-1/4/16
• Fiber Channel
• Gigabit Ethernet

Procurement Notes

Verify the specific pinout and functional limitations of the 32-lead LFCSP package against system requirements, as it offers reduced functionality compared to the 48-lead variant. Confirm that the design accommodates the required bias and modulation current ranges. Ensure thermal management meets the operating temperature specifications for the intended application environment.

Selection Notes

Select this component when a compact form factor is required for SONET/SDH or Gigabit Ethernet applications. The 32-lead package is suitable for designs where full 48-lead features are not necessary. Evaluate the need for dual MPD support; if only single MPD is needed, this part provides sufficient control loops for standard laser diode driving.

Part Context

This part belongs to the ADN2841 series of laser drivers. It shares the core control algorithm with the 48-lead version but utilizes a smaller footprint. The series is widely used in telecom infrastructure requiring precise laser control. The 32-lead variant simplifies PCB layout while maintaining essential performance metrics for high-speed optical transmission.

FAQ

Does the ADN2841ACPZ-32 support dual monitor photodiodes?

Yes, the ADN2841ACPZ-32 includes circuitry for dual monitor photodiode functionality, enabling DWDM wavelength fixing capabilities similar to the larger package version.

What is the maximum data rate supported by this driver?

The ADN2841ACPZ-32 supports operation up to 2.7 Gbps, making it suitable for various high-speed optical communication standards.