3.3 V 2.7 Gb/sLimiting AmplifierData SheetADN2890FEATURESGENERAL DESCRIPTIONSFP reference design available The ADN2890 is a high gain, limiting amplifier optimized for Input sensitivity: 3 mV p-p use in SONET, Gigabit Ethernet (GbE), and Fibre Channel 80 ps rise/fall times optical receivers that accept input levels of up to 2.0 V p-p CML outputs: 700 mV p-p differential differential and have 3 mV p-p differential input sensitivity. The Programmable LOS detector: 2 mV to 13 mV ADN2890 provides the receiver functions of quantization and Rx signal strength indicator (RSSI): loss of signal (LOS) detection. The ADN2890 can easily operate SFF-8472 compliant average power measurement at up to 3.2 Gb/s to support LX4 transceivers. Single-supply operation: 3.3 V The limiting amplifier also measures average received power Low power dissipation: 130 mW based on a direct measurement of the photodiode current with Available in space-saving 3 mm × 3 mm 16-lead LFCSP better than 1 dB of accuracy over the entire input range of the APPLICATIONS receiver. This eliminates the need for external average Rx power SFP/SFF/GBIC optical transceivers detection circuitry in SFF-8472 compliant optical transceivers. OC-3/12/48, GbE, Fibre Channel receivers The ADN2890 limiting amplifier operates from a single 3.3 V 10GBASE-LX4 transceivers supply, has low power dissipation, and is available in a space- WDM transponders saving 3 mm × 3 mm 16-lead lead frame chip scale package