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ADN2890:  3.3 V, 2.7 Gbps Limiting Amplifier

Product Details

The ADN2890 is high gain limiting amplifiers optimized for use in datacom and telecom optical receivers. It accepts input levels up to 2.0 V p-p differential and has 3 mV pp differential input sensitivity. The ADN2890 provides the receiver functions of Quantization and Loss of Signal Detection. The limiting amplifier also measures average received power based on a direct measurement of the photodiode current with better than +3 dB of accuracy over the entire input range of the receiver. This eliminates the need for external average Rx power detection circuitry in SFF-8472 compliant optical transceivers.

The ADN2890 limiting amplifier operates from a single 3.3 V supply, and has low power dissipation.

The ADN2890 can easily operate at up to 3.2Gb/s to support LX4 transceivers.


  • SFP/SFF/GBIC Optical Transceivers
  • OC3-OC48, GbE
  • WDM Transponders
  • 10GBASE-LX4 Transceivers


  • SFP reference design available
  • Input sensitivity: 3 mV p-p
  • 80 ps rise/fall times
  • CML outputs: 700 mV p-p differential
  • Programmable LOS detector: 2 mV to 13 mV
  • Single-supply operation: 3.3 V
  • Rx signal strength indicator (RSSI):
    SFF-8472 compliant average power measurement
  • Low power dissipation: 130 mW
  • Available in space-saving 3 mm × 3 mm 16-lead LFCSP

Functional Block Diagram for ADN2890


Title Content Type File Type
ADN2890: 3.3V 2.7Gb/s Limiting Amplifier Data Sheet (Rev A, 10/2013) (pdf, 267 kB) Data Sheets PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

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ADN2890 Model Options
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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.

ADN2890 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
ADN2890-EVALZ Status: Production Evaluation Board $350.00 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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