ADN2849ACP-RL Просмотр технического описания (PDF) - Analog Devices
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ADN2849ACP-RL Datasheet PDF : 17 Pages
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10.7 Gbps Electro-Absorption Modulator Driver
Preliminary Technical Data
ADN2849
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
50Ω 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
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.
APPLICATIONS
SONET OC-192 Optical Transmitters
SDH STM-64 Optical Transmitters
10Gb Ethernet IEEE802.3
XFP/X2/XENPACK/MSA-300 Optical Modules
ADN2849
CPAP CPAN MOD_SET
BIAS_SET GND VTERM MODN_TERM
GND
R
R
DATAP
50Ω
50Ω
DATAN
VBB
CLKP
50Ω
50Ω
CLKN
DQ
MUX
CROSS
POINT
ADJUST
50Ω
MODP
VEE
VEE
CLK_SELB MOD_ENB
Figure 1. Functional Block Diagram
Rev. Pr. G August 2004
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Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.
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