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ADN2841 Fiches technique(PDF) 1 Page - Analog Devices |
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ADN2841 Fiches technique(HTML) 1 Page - Analog Devices |
1 / 16 page Dual-Loop, 50 Mbps to 2.7 Gbps Laser Diode Driver Data Sheet ADN2841 Rev. B Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2001–2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES 50 Mbps to 2.7 Gbps operation Typical rise/fall time: 80 ps Bias current range: 2 mA to 100 mA Modulation current range: 5 mA to 80 mA Monitor photodiode current: 50 µA to 1200 µA Closed-loop control of power and extinction ratio Laser fail and laser degrade alarms Automatic laser shutdown (ALS) Dual MPD functionality for DWDM Optional clocked data Full current parameter monitoring 5 V operation 48-lead LFCSP 32-lead LFCSP (reduced functionality) APPLICATIONS DWDM dual MPD wavelength fixing SONET OC-1/3/12/48 SDH STM-1/4/16 Fibre Channel Gigabit Ethernet GENERAL DESCRIPTION The ADN2841 uses a unique control algorithm to control both the average power and extinction ratio of the laser diode (LD) after initial factory setup. Because power and extinction ratio control are fully integrated, external component count is low and PCB area is small. Programmable alarms are provided for laser fail (end of life) and laser degrade (impending fail). The ADN2841 has circuitry for a second monitor photodiode, which enables DWDM wavelength control. FUNCTIONAL BLOCK DIAGRAM CONTROL DATAP DATAN CLKP CLKN IMODP LD VCC GND ASET IMOD IBIAS GND GND GND GND GND LBWSET IDTONE PAVCAP ERCAP ERSET PSET IMPD2 IMPD VCC MPD VCC ADN2841 IMODN IBIAS Figure 1. |
Numéro de pièce similaire - ADN2841_15 |
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Description similaire - ADN2841_15 |
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