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ADN2841ACP-32 Datasheet(PDF) 1 Page - Analog Devices

Part No. ADN2841ACP-32
Description  Dual-Loop 50 Mbps.2.7 Gbps Laser Diode Driver
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADN2841ACP-32 Datasheet(HTML) 1 Page - Analog Devices

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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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
a
ADN2841
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
© Analog Devices, Inc., 2001
Dual-Loop 50 Mbps–2.7 Gbps
FUNCTIONAL BLOCK DIAGRAM
CONTROL
DATAP
DATAN
CLKP
CLKN
IMODP
IBIAS
LD
VCC
GND
ASET
IMOD
IBIAS
GND
GND
GND
GND
GND
LBWSET
IDTONE
PAVCAP
ERCAP
ERSET
PSET
IMPD2
IMPD
VCC
MPD
VCC
ADN2841
IMODN
FEATURES
50 Mbps to 2.7 Gbps Operation
Typical Rise/Fall Time 80 ps
Bias Current Range 2 to 100 mA
Modulation Current Range 5 to 80 mA
Monitor Photodiode Current 50
A to 1200
A
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 Package
32-Lead LFCSP Package (Reduced Functionality)
APPLICATIONS
DWDM Dual MPD Wavelength Fixing
SONET OC-1/3/12/48
SDH STM-1/4/16
Fiber Channel
Gigabit Ethernet
GENERAL DESCRIPTION
The ADN2841 uses a unique control algorithm to control both
average power and extinction ratio of the laser diode (LD) after
initial factory set up. External component count and PCB area are
low as both power and extinction ratio control are fully integrated.
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.
Laser Diode Driver


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