ADN2847ACP-32

Laser Drivers Overview

The ADN2847ACP-32 is a dual-loop laser diode driver from Analog Devices, designed for optical communication systems. It operates at data rates from 50 Mbps to 3.3 Gbps with single 3.3 V supply voltage. Key electrical parameters include a bias current range of 2 mA to 100 mA and a modulation current range of 5 mA to 80 mA. The device supports monitor photodiode currents from 50 μA to 1200 μA. Typical rise and fall times are 80 ps. It features closed-loop control for average power and extinction ratio, along with programmable alarms for laser fail and degrade conditions.

Laser Drivers Feature Summary

• Dual-loop control algorithm manages both average power and extinction ratio after factory setup
• Integrated programmable alarms for laser fail and laser degrade detection
• Supports automatic laser shutdown (ALS) functionality
• Enables full current parameter monitoring for system diagnostics

Laser Drivers Applications

• SONET OC-1/3/12/48 systems
• SDH STM-0/1/4/16 networks
• Fibre Channel interfaces
• Gigabit Ethernet links
• DWDM dual MPD wavelength control

Laser Drivers Procurement Notes

Verify the specific package variant when ordering, as the ADN2847 series includes both 48-lead and 32-lead LFCSP options. Confirm that the selected part matches the required pinout and functional specifications for the target design. Check manufacturer documentation for any process change notices or obsolescence updates prior to final procurement decisions.

Laser Drivers Selection Notes

Select this component for designs requiring high-speed laser modulation up to 3.3 Gbps with integrated power and extinction ratio control. The 32-lead package offers reduced PCB area compared to the 48-lead version. Ensure the application environment supports the specified operating temperature range and that the external monitor photodiode characteristics align with the device's input current capabilities.

Laser Drivers Part Context

This device belongs to the ADN284x family of laser drivers from Analog Devices. It shares architectural similarities with the ADN2841 but operates on a single 3.3 V supply instead of 5 V. The ADN2847 provides enhanced speed performance up to 3.3 Gbps compared to lower-speed variants in the same product line, targeting modern optical transceiver modules.

Laser Drivers Replacement Considerations

Public confirmed substitute part numbers: ADN2841ACP-32, ADN2848ACP-32Z.