Features and Benefits

  • 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
  • Rx signal strength indicator (RSSI):
    • SFF-8472 compliant average power measurement
  • Single-supply operation: 3.3 V
  • Low power dissipation: 130 mW
  • Available in space-saving 3 mm × 3 mm 16-lead LFCSP

Product Details

The ADN2890 is a high gain, limiting amplifier optimized for use in SONET, Gigabit Ethernet (GbE), and Fibre Channel optical receivers that accept input levels of up to 2.0 V p-p differential and have 3 mV p-p differential input sensitivity. The ADN2890 provides the receiver functions of quantization and loss of signal (LOS) detection. The ADN2890 can easily operate at up to 3.2 Gb/s to support LX4 transceivers.

The limiting amplifier also measures average received power based on a direct measurement of the photodiode current with better than 1 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, has low power dissipation, and is available in a space-saving 3 mm × 3 mm 16-lead lead frame chip scale package (LFCSP).


  • SFP/SFF/GBIC optical transceivers
  • OC-3/12/48, GbE, Fibre Channel receivers
  • 10GBASE-LX4 transceivers
  • WDM transponders

Product Lifecycle icon-recommended Last Time Buy

All products in this family will be obsolete soon. Please contact ADI Sales or Distributors to arrange for final purchases and read our Obsolescence Information to review the time periods for placing final orders and receiving final shipments.

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.


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