ADN2847:  3.3 V Dual-Loop 50 Mbps to 3.3 Gbps Laser Diode Driver

The ADN2847 uses a unique control algorithm to control both average power and extinction ratio of the laser diode (LD) after initial factory setup. External component count and PCB area are low, as ...More

ADN2847:  3.3 V Dual-Loop 50 Mbps to 3.3 Gbps Laser Diode Driver

Product Description

The ADN2847 uses a unique control algorithm to control both average power and extinction ratio of the laser diode (LD) after initial factory setup. External component count and PCB area are low, as both power and extinction ratio control are fully integrated. Programmable alarms are provided for laser fail (end of life) and laser degrade (impending fail).

Optional dual MPD current monitoring is designed into the ADN2847 specifically for DWDM wavelength control.

The ADN2847 is specified for the −40°C to +85°C temperature range and is available in a 48-lead LFCSP package and a 32-lead LFCSP package.

Applications

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

    • Features

    • 50 Mbps to 3.3 Gbps operation
    • Single 3.3 V operation
    • Typical rise/fall time: 80 ps
    • Bias current range: 2 mA to 100 mA
    • Modulation current range: 5 mA to 80 mA
    • Monitor photodiode current: 50 µA to 1200 µA
    • Dual MPD functionality for DWDM
    • 50 mA supply current at 3.3 V
    • Closed-loop control of power and extinction ratio
    • Full current parameter monitoring
    • Laser fail and laser degrade alarms
    • Automatic laser shutdown (ALS)

    Diagrams

    ADN2847 Diagram
    Functional Block Diagram for ADN2847

    Specifications

    Data Rate (Gbps) 3.3
    Voltage Supply (V) 3.3V
    Single Ended/Differential Both
    Package 5x5 mm LFCSP,7x7 mm LFCSP
    Modulation Current (mA) 80mA
    Laser Bias Current (mA) 100mA
    Rise/Fall Time (ps) 80ps
    Dual Loop X
    MSA Compliance SFF

    Explore Other Products

    ADN2873 - 3.3 V, 50 Mbps to 4.25 Gbps, Single-Loop, Laser Diode Driver

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    Part# Data Rate (Gbps) Voltage Supply (V) Laser Bias Current (mA) Single Ended/Differential Modulation Current (mA) Rise/Fall Time (ps) Dual Loop MSA Compliance Package Price* (1000-4999)
    ADN2525 10.7 3.3 100 Differential 80 24 - XFP, Xenpak, X2, MSA-300 3x3 mm LFCSP $21.14
    ADN2530 11.3 3.3 25 Differential 23 26 - - 3x3 mm LFCSP $15.49
    ADN2830 - 5 200 Single Ended - - - - 5x5 mm LFCSP $8.60
    ADN2841 2.7 5 100 Both 80 80 X SFF 5x5 mm LFCSP, 7x7 mm LFCSP $17.15
    ADN2847 3.3 3.3 100 Both 80 80 X SFF 5x5 mm LFCSP, 7x7 mm LFCSP $8.05
    ADN2848 1.25 3.3 100 Both 80 80 X SFF 5x5 mm LFCSP $5.85
    ADN2870 3.3 3.3 100 Both 90 60 X SFP-SFF-8472 4x4 mm LFCSP $5.31
    ADN2871 4.25 3.3 100 Both 90 60 - - 4x4 mm LFCSP $4.30

    * The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    ** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

    Pricing, Packaging & Availability

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    Temperature Range
    This is the acceptable operating range of the device. The various ranges specified are as follows:
    • Commercial: 0 to +70 degrees Celsius
    • Military : -55 to +125 degrees Celsius
    • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
    • Automotive: -40 to +125 degrees Celsius
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    *The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    **Sample availability may be better than production availability. Please enter samples iinto your cart to check sample availability.

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