Features Bias current range Monitor photodiode current 1200 Closed-loo

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Features Bias current range Monitor photodiode current 1200 Closed-loo

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ADN2830-Average Power Controller Continuous Wave (CW) Laser
Features Bias current range Monitor photodiode current 1200 Closed-loop control average power Laser fail laser degrade alarms Automatic laser shutdown (ALS) Current parameter monitoring operation -40°C +85°C temperature range 32-lead LFCSP package
ADN2830's unique control algorithm manages laser average power extinction ratio, optimizing overall laser performance.
Fiber optic communications
Closed-Loop Control Average Optical Power Continuous Laser Diode address ever increasing infrastructure requirements fiber optic communications, Analog Devices focused providing high-performance cost-effective interface solutions optical networking systems. ADN2830 provides closed-loop control average optical power continuous wave (CW) laser diode (LD) after initial factory setup. device provide bias current second ADN2830 used parallel achieve bias current ADN2830 provides alarms current parameter monitoring, available 32-lead LFCSP package.
ADN2830 integrated solution that enables component count, area savings, cost reductions.
General Description
ADN2830 provides closed-loop control average optical power continuous wave (CW) laser diode (LD) after initial factory setup.
FUNCTIONAL BLOCK DIAGRAM
MPDMON IBMON DEGRADE MODE FAIL
control loop adjusts laser IBIAS maintain constant back-facet monitor photodiode (MPD) current thus constant laser optical power. external PSET resistor adjusted during factory setup desired optical power. Additional functionality such automatic laser shutdown (ALS) output current monitoring available. Programming alarms provided laser fail (end life) laser degrade (impending fail).
CONTROL
PSET
RPSET
IBIAS
ASET PAVCAP
ADN2830
This information applies product under development. characteristics specifications subject change without notice. Analog Devices assumes obligation regarding future manufacture, unless otherwise agreed writing. responsibility assumed Analog Devices use; infringement patents other rights third parties that result from use. license granted implication otherwise under patent patent rights Analog Devices. Worldwide Headquarters Technology P.O. 9106 Norwood, 02062-9106 U.S.A. Tel: 4700 5643, U.S.A. only) Fax: 8703 Analog Devices GmbH Westpark D-81373 Germany Tel: 76903 Fax: 76903 Japan Headquarters Pier Takeshiba South Tower Building 1-16-1 Kaigan, Minato-ku Tokyo 105-6891, Japan Tel: 5402 8200 Fax: 5402 1063 Southeast Asia Headquarters 4501 West Tower Times Square Matheson Street Causeway Bay, Hong Kong, Tel: 9336 Fax: 4755
©Analog Devices, Inc., 2002. rights reserved. Trademarks registered trademarks property their respective companies. Printed U.S.A. H02881-1-3/02(0)

Features Bias current range Monitor photodiode current 1200 Closed-loo

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