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ADN2525:  10.7 Gbps Active Back-Termination, Differential Laser Diode Driver

Product Details


The ADN2525 laser diode driver is designed for direct modula-tion of packaged laser diodes having a differential resistance ranging from 5 Ωto 50 Ω. The active back-termination technique provides excellent matching with the output transmission lines while reducing the power dissipation in the output stage. The back-termination in the ADN2525 absorbs signal reflections from the TOSA end of the output transmission lines, enabling excellent optical eye quality to be achieved even when the TOSA end of the output transmission lines is significantly misterminated. The small package provides the optimum solution for compact modules where laser diodes are packaged in low pin-count optical subassemblies.

The modulation and bias currents are programmable via the MSET and BSET control pins. By driving these pins with control voltages, the user has the flexibility to implement various average power and extinction ratio control schemes, including closed-loop control and look-up tables. The automatic laser shutdown (ALS) feature allows the user to turn on/off the bias and modulation currents by driving the ALS pin with the proper logic levels.

The product is available in a space-saving 3 mm × 3 mm LFCSP specified from −40°C to +85°C.

Applications

  • SONET OC-192 optical transceivers
  • SDH STM-64 optical transceivers
  • 10 Gb Ethernet optical transceivers
  • XFP/X2/XENPAK/XPAK/MSA 300 optical modules
  • SR and VSR optical links

FEATURES and BENEFITS

  • Up to 10.7 Gbps operation
  • Very low power: 670 mW (IBIAS = 40 mA, IMOD = 40 mA)
  • Typical 24 ps rise/fall times
  • Full back-termination of output transmission lines
  • Drives TOSAs with resistances ranging from 5 Ω to 50 Ω
  • Compatible with XMD-MSA TOSA
  • PECL-/CML-compatible data inputs
  • Bias current range: 10 mA to 100 mA
  • Differential modulation current range: 10 mA to 80 mA
  • Automatic laser shutdown (ALS)
  • 3.3 V operation
  • Compact 3 mm × 3 mm LFCSP

Functional Block Diagram for ADN2525

OF NOTE ...

Optical evaluation boards (with 10G TOSAs) are available. Please contact the Fiber Optic IC Development Group for information on Evaluation Boards.

Documentation

Title Content Type File Type
ADN2525: 10.7 Gbps Active Back-Termination, Differentail Laser Diode Driver Data Sheet (Rev A, 08/2006) (pdf, 493 kB) Data Sheets PDF
Optical and High Speed Networking  (pdf, 2236 kB)
Analog Devices’ optical and high speed networking ICs solve a depth and breadth of challenges faced by today’s designers of datacom and telecom systems, optical modules, and subsystems. Analog Devices products address a wide range of networking applications from O/E/O conversion, clock recovery, and backplane transmission to monitoring and control of optical power, power management, and clock generation and distribution.
Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

ADN2525 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD60/001-500R7 Status: Obsolete 16 ld LFCSP (3x3mm, 1.50mm exposed pad) 16 Ind Reel, 500 - - N  Material Info PCN/PDN Contact ADI
ADN2525ACPZ-R2 Status: Production 16 ld LFCSP (3x3mm, 1.50mm exposed pad) 16 Ind Reel, 250 - $25.37 Y  Material Info PCN Purchase
ADN2525ACPZ-REEL7 Status: Production 16 ld LFCSP (3x3mm, 1.50mm exposed pad) 16 Ind Reel, 1500 - $21.14 Y  Material Info PCN Purchase
ADN2525ACPZ-WP Status: Production 16 ld LFCSP (3x3mm, 1.50mm exposed pad) 16 Ind Tray, 50 $25.37 $21.14 Y  Material Info PCN Purchase
Price Table Help

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.

ADN2525 Evlauation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-ADN2525-NTZ Status: Production Evaluation Board $657.80 Yes - Contact ADI
EVAL-ADN2525-OPZ Status: Production Evaluation Board $759.00 Yes - Contact ADI

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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