ADN2849
器件描述：10.7 Gbps Electro-Absorption Modulator Driver
器件厂商：AD [Analog Devices]
文件大小：1425.78KB，共10页
Sponsor by e络盟器件资料摘要：
10.7 Gbps Electro-Absorption Modulator Driver
Preliminary Technical Data
ADN2849
Rev. Pr. G August 2004
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: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.
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
APPLICATIONS
SONET OC-192 Optical Transmitters
SDH STM-64 Optical Transmitters
10Gb Ethernet IEEE802.3
XFP/X2/XENPACK/MSA-300 Optical Modules
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.
ADN2849
CROSS
POINT
ADJUST
MUX
QD
DATAP
DATAN
VBB
CLKP
CLKN
VEE CLK_SELB MOD_ENB
50Ω
50Ω
50Ω
50Ω
50Ω
VEE
MODP
CPAP CPAN MOD_SET BIAS_SET VTERMGND MODN_TERM
R
R
GND
Figure 1. Functional Block Diagram
Preliminary Technical Data
ADN2849
Rev. Pr. G August 2004
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: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.
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
APPLICATIONS
SONET OC-192 Optical Transmitters
SDH STM-64 Optical Transmitters
10Gb Ethernet IEEE802.3
XFP/X2/XENPACK/MSA-300 Optical Modules
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.
ADN2849
CROSS
POINT
ADJUST
MUX
QD
DATAP
DATAN
VBB
CLKP
CLKN
VEE CLK_SELB MOD_ENB
50Ω
50Ω
50Ω
50Ω
50Ω
VEE
MODP
CPAP CPAN MOD_SET BIAS_SET VTERMGND MODN_TERM
R
R
GND
Figure 1. Functional Block Diagram