Motor de Búsqueda de Datasheet de Componentes Electrónicos
Selected language     Spanish  ▼

Delete All
ON OFF
ALLDATASHEET.ES

X  

Preview PDF Download HTML

ADN2871 Datasheet(PDF) 1 Page - Analog Devices

No. de Pieza. ADN2871
Descripción  3.3 V, 50 Mbps to 4.25 Gbps Single-Loop Laser Diode Driver
Descarga  20 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Fabricante  AD [Analog Devices]
Página de inicio  http://www.analog.com
Logo 

ADN2871 Datasheet(HTML) 1 Page - Analog Devices

 
Zoom Inzoom in Zoom Outzoom out
 1 / 20 page
background image
3.3 V, 50 Mbps to 4.25 Gbps
Single-Loop Laser Diode Driver
ADN2871
Rev. 0
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: 781.461.3113
© 2005 Analog Devices, Inc. All rights reserved.
FEATURES
SFP/SFF and SFF-8472 MSA-compliant
SFP reference design available
50 Mbps to 4.25 Gbps operation
Automatic average power control
Typical rise/fall time 60ps
Supports VCSEL, DFB, and FP lasers
Bias current range 2 mA to 100 mA
Modulation current range 5 mA to 90 mA
Laser fail alarm and automatic laser shutdown (ALS)
Bias and modulation current monitoring
3.3 V operation
4 mm × 4 mm LFCSP
Voltage setpoint control
Resistor setpoint control
Pin-compatible with ADN2870
APPLICATIONS
1×/2×/4× Fibre Channel SFP/SFF modules
Multirate OC3 to OC48-FEC SFP/SFF modules
LX-4 modules
DWDM/CWDM SFP modules
1GE SFP/SFF transceiver modules
VCSEL, DFB, and FP transmitters
GENERAL DESCRIPTION
The ADN2871 laser diode driver is designed for advanced
SFP and SFF modules, using SFF-8472 digital diagnostics. The
ADN2871 supports operation from 50 Mbps to 4.25 Gbps.
Average power and extinction ratio can be set with a voltage
provided by a microcontroller DAC or by a trimmable resistor
or digital potentiometer. The average power control loop is
implemented using feedback from a monitor photodiode. The
part provides bias and modulation current monitoring as well
as fail alarms and automatic laser shutdown. The device
interfaces easily with the ADI ADuC70xx family of micro-
converters and with the ADN289x family of limiting amplifiers
to make a complete SFP/SFF transceiver solution. An SFP
reference design is available. The product is pin-compatible with
the ADN2870 dual-loop LDD, allowing one PC board layout to
work with either device. For dual-loop applications, refer to the
ADN2870 data sheet.
The product is available in a space-saving 4 mm × 4 mm LFCSP
specified over the −40°C to +85°C temperature range.
Figure 1 shows an application diagram of the voltage setpoint
control with single-ended laser interface. Figure 36 shows a
differential laser interface.
ADI
MICROCONTROLLER
Tx_DISABLE
Tx_FAULT
CONTROL
PAVREF
PAVSET
ADN2871
RPAV
GND
DAC
DAC
VCC
MPD
ERREF
ERSET
GND
IMOD
DATAP
IMODP
DATAN
IMODN
IBMON
IMMON
ALS
FAIL
IBIAS
100
CCBIAS
VCC
LASER
L
R
VCC
VCC
VCC
GND
GND
PAVCAP
470
1k
GND
GND
NC
1k
1k
ADC
VCC
×100
Figure 1. Application Diagram of Voltage Setpoint Control with Single-Ended Laser Interface


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20 


Datasheet Download




Enlace URL




Privacy Policy
ALLDATASHEET.ES
Does ALLDATASHEET help your business so far?  [ DONATE ]  

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Favorito   |   Intercambio de Enlaces   |   Lista de Fabricantes
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn