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ADN2870:  3.3 V, Dual Loop, 50 Mbps to 3.3 Gbps Laser Diode Driver

Product Details


The ADN2870 laser diode driver is designed for advanced SFP and SFF modules, using SFF-8472 digital diagnostics. The device features dual-loop control of the average power and extinction ratio, which automatically compensates for variations in laser characteristics over temperature and aging. The laser needs only to be calibrated at 25°C, eliminating the expensive and time consuming temperature calibration. The ADN2870 supports single-rate operation from 50 Mbps to 3.3 Gbps or multirate operation from 155 Mbps to 3.3 Gbps.

Average power and extinction ratios can be set with reference voltages provided by a microcontroller DAC or by adjustable resistors. The ADN2870 provides bias and modulation current monitoring as well as fail alarms and automatic laser shutdown. The device interfaces easily with the ADuC702x 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 available in a space-saving 4 mm × 4 mm LFCSP specified over the −40°C to +85°C temperature range.

Applications

  • Multirate OC3 to OC48-FEC SFP/SFF modules
  • 1×/2×/4× Fibre Channel SFP/SFF modules
  • LX-4 modules
  • DWDM/CWDM SFP modules
  • 1GE SFP/SFF transceiver modules

FEATURES and BENEFITS

  • Microcontroller Interface
  • SFP/SFF and SFF-8472 Compliant
  • 50 Mbps to 3.3 Gbps Operation
  • Closed Loop Control of Average Power and Extinction Ratio
  • Typical Rise/Fall-time 60 ps
  • Bias Current Range 2 to 100 mA
  • Modulation Current Range 5 to 90 mA
  • See Data Sheet for Additional Information

Functional Block Diagram for ADN2870

OF NOTE ...

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.

Documentation

Title Content Type File Type
ADN2870: 3.3 V Dual-Loop, 50 Mbps to 3.3 Gbps Laser Diode Driver Data Sheet  (Rev A, 03/2008) (pdf, 774 kB) Data Sheets PDF
Transceiver targets 4x Fibre Channel Applications
New optical transceiver chipset and reference design from Analog Devices supports both gigabit Ethernet and Fibre Channel data rates up to 4.25 Gbps (eeProductCenter, 1/20/05)
Product Reviews HTML
SFP Chipset and Reference Design Simplify 4.25 Gbps Transceivers Overview HTML
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

ADN2870 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD60/005Z-0 Status: Contact ADI 24 ld LFCSP (4x4mm w/2.30mm EP) 24 Ind Tray, 490 - - Y  Material Info Notify Me Purchase
ADN2870ACPZ Status: Production 24 ld LFCSP (4x4mm w/2.30mm EP) 24 Ind Tray, 490 $5.57 $5.31 Y  Material Info PCN Purchase Sample
ADN2870ACPZ-RL Status: Production 24 ld LFCSP (4x4mm w/2.30mm EP) 24 Ind Reel, 5000 - $5.31 Y  Material Info PCN Purchase
ADN2870ACPZ-RL7 Status: Production 24 ld LFCSP (4x4mm w/2.30mm EP) 24 Ind Reel, 1500 - $5.31 Y  Material Info PCN Purchase
AN60/010Z-500R7 Status: Last Time Buy 24 ld LFCSP (4x4mm w/2.10mm EP) 24 Ind Reel, 500 - - Y  Material Info PCN/PDN 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.

ADN2870 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-ADN2870 Status: Contact ADI Evaluation Board $354.20 No -
EVALZ-ADN2870 Status: Production Evaluation Board $354.20 Yes -

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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