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ADN2871:  3.3 V, 50 Mbps to 4.25 Gbps, Single-Loop, Laser Diode Driver

The ADN2871 laser diode driver is designed for advanced SFP and SFF modules, using SFF-8472 digital diagnostics. The ADN2871 supports operation from 50 Mbps to 4.25 Gbps.

Average power and extinction ratio can be set with a voltage provided by a microcontroller DAC or by a trimmable resistor or digital potentiometer. The average power control loop is implemented using feedback from a ...More

ADN2871:  3.3 V, 50 Mbps to 4.25 Gbps, Single-Loop, Laser Diode Driver

Product Description

The ADN2871 laser diode driver is designed for advanced SFP and SFF modules, using SFF-8472 digital diagnostics. The ADN2871 supports operation from 50 Mbps to 4.25 Gbps.

Average power and extinction ratio can be set with a voltage provided by a microcontroller DAC or by a trimmable resistor or digital potentiometer. The average power control loop is implemented using feedback from a monitor photodiode. The part provides bias and modulation current monitoring as well as fail alarms and automatic laser shutdown (ALS). The device interfaces easily with the Analog Devices, Inc. ADuC70xx family of MicroConverters® and with the ADN289x family of limiting amplifiers to make a complete SFP/SFF transceiver solution. An SFP reference design is available. The product is pin-compatible with the ADN2870 dual-loop LDD, allowing one PC board layout to work with either device. For dual-loop applications, refer to the ADN2870 data sheet.

The product is available in a space-saving 4 mm × 4 mm LFCSP specified over the −40°C to +85°C temperature range.

Applications

  • 1×/2×/4× Fibre Channel SFP/SFF modules
  • Multirate OC3 to OC48-FEC SFP/SFF modules
  • LX-4 modules
  • DWDM/CWDM SFP modules
  • 1GE SFP/SFF transceiver modules
  • VCSEL, DFB, and FP transmitters

    • Data Sheet, Rev. A, 2/07

    RESOURCES & TOOLS

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    • SFP/SFF and SFF-8472 MSA-compliant
    • SFP reference design available
    • 50 Mbps to 4.25 Gbps operation
    • Automatic average power control
    • Typical rise/fall time 60 ps
    • Supports VCSEL, DFB, and FP lasers
    • Bias current range 2 mA to 100 mA
    • Modulation current range 5 mA to 90 mA
    • Laser fail alarm and automatic laser shutdown (ALS)
    • Bias and modulation current monitoring
    • 3.3 V operation
    • 4 mm × 4 mm LFCSP
    • Data Rate (Gbps) : 4.25
    • Voltage Supply (V): 3.3V
    • Single Ended/Differential: Both
    • Package: 4x4 mm LFCSP
    • Total Power (mW): 0
    • Modulation Current (mA): 90mA
    • Laser Bias Current (mA): 100mA
    • Rise/Fall Time (ps): 60ps

    Typical Connection Diagram for ADN2871

    OF NOTE ...

    For information on Evaluation Boards, please contact the Fiber Optics Development Group. For an opportunity to receive a copy of the Applications Note: Detailed Applications and Design Information for ADI's SFP Reference Design, please contact the Fiber Optic IC Development Group.

    Similar Products

    arrow View Full Interactive Product Selection Table
    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
    ADN2526 11.3 3.3 100 Differential 80 24 - SFP, SFP+, XFP, Xenpak, X2, MSA-300 3x3 mm LFCSP -
    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
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    * 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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    For detailed drawings and chemical composition please consult our  Package Site

    Pin Count
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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
    Price
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    View PCN
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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 into your cart to check sample availability.