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ADN2849ACP-RL7 Fiches technique(PDF) 1 Page - Analog Devices |
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ADN2849ACP-RL7 Fiches technique(HTML) 1 Page - Analog Devices |
1 / 10 page 10.7 Gbps Electro-Absorption Modulator Driver Preliminary Technical Data ADN2849 Rev. Pr. G August 2004 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved. FEATURES Data Rates up to 10.709Gb/s Typical Rise/Fall Time 27ps Power Dissipation 900mW (at 2V swing, 1V offset) Programmable Modulation Voltage up to 3V Programmable Bias Offset Voltage up to 2V Voltage-input control for offset, modulation Cross Point Adjust Range 30%- 85% Selectable Data Retiming PECL/CML Data & Clock Inputs 50 Ω on Chip Data & Clock Terminations Modulation Ebnable/Disable |S11|<-10dB , |S22|<-8dB at 10GHz Positive or negative 5.2 or 5.0V single supply operation Available in dice and 4x4mm 24 Lead LFCSP package APPLICATIONS SONET OC-192 Optical Transmitters SDH STM-64 Optical Transmitters 10Gb Ethernet IEEE802.3 XFP/X2/XENPACK/MSA-300 Optical Modules PRODUCT DESCRIPTION The ADN2849 is a low power 10.7Gbps driver for electro- absorption modulator (EAM) applications. The modulation voltage is programmable via an external voltage up to a maximum swing of 3V when driving 50Ω. The bias offset voltage and output eye cross point are also programmable. On- chip 50Ω resistor is provided for back termination of the output. The ADN2849 is driven by AC coupled differential CML level data and has selectable data retiming to remove jitter from data input signal. The modulation voltage can be enabled or disabled by driving the MOD_ENB pin with the proper logic levels. It can operate with positive or negative (5.2V or 5.0V) supply voltage. The ADN284949 is available in a compact 4x4mm plastic package or dice format. ADN2849 CROSS POINT ADJUST MUX Q D DATAP DATAN VBB CLKP CLKN VEE CLK_SELB MOD_ENB 50Ω 50Ω 50Ω 50Ω 50Ω VEE MODP CPAP CPAN MOD_SET BIAS_SET VTERM GND MODN_TERM R R GND Figure 1. Functional Block Diagram |
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