ADN2849

Obsolete

10.7 Gb/s Electro-Absorbtive Modulator Driver

Data Sheet (Rev. PrG) Product Selection Table

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Overview

Data Rates up to 11.1 Gb/s
Programmable Bias Offset Voltage Up to 2 V
Cross Point Adjust Range ±90%
Single Ended Output
Power Dissipation 900 mW (2 V Swing, 1 V Offset)
Selectable Data Retiming

4 mm x 4 mm LFCSP Package
CML Data and Clock Inputs
50 Ω Internal Data & Clock Terminations
Typical Rise/Fall-Time 27 ps
-5.2 V or +5.0 V Single Supply Operation
Programmable Modulation Voltage Up to 3 V

The ADN2849 is low power 10.7 Gbps driver for external modulation applications. The device is the smallest (4 mm x 4 mm Package), and lowest power (900 mW) device in its class. Integrated on-chip bias offset and modulation set buffer amplifiers further reduce board space requirements. The ADN2849 provides a 3 V single-ended output to drive an electro-absorption modulator. Greater overall device functionality is provided with improved modulation voltage rise and fall times of 27 ps and power dissipation of 900 mW.

The modulation voltage is programmable via an external voltage up to a maximum swing of 3 V when driving 50 Ω. The bias offset voltage and output eye cross point are also programmable. On-chip 50 Ω resistors are provided for back termination of the outputs.

The ADN2849 operates from a single power supply at -5.2 V or +5.0 V. It is available in 4 mm x 4 mm 24-Lead LFCSP Lead Frame Chip Scale packages or in bare die form.

Applications

Electro-Absorption Modulator Driver

XFP, Xenpak and X2 IR and LR Optical Modules