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| 型号： | ADN2531ACPZ-R7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC LASER DRIVER 11.3GBPS 16LFCSP |
| 标准包装： | 1,500 |
| 类型： | 激光二极管驱动器 |
| 数据速率： | 11.3Gbps |
| 通道数： | 1 |
| 电源电压： | 3 V ~ 3.6 V |
| 电流 - 电源： | 36mA |
| 电流 - 调制： | 80mA |
| 电流 - 偏置： | 100mA |
| 工作温度： | -40°C ~ 100°C |
| 封装/外壳： | 16-VFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 16-LFCSP-VQ |
| 包装： | 带卷 (TR) |
| 安装类型： | 表面贴装 |
11.3 Gbps, Active Back-Termination,
Differential Laser Diode Driver
Data Sheet
FEATURES
3.3 V operation
Up to 11.3 Gbps operation
Typical 26 ps rise/fall times
Bias current range: 10 mA to 100 mA
Differential modulation current range: 10 mA to 80 mA
Voltage input control for bias and modulation currents
Data inputs sensitivity: 150 mV p-p differential
Automatic laser shutdown (ALS)
Crosspoint adjustment (CPA)
VCSEL, FP, DFB laser support
SFF/SFP/XFP/SFP+ MSA compliant
Optical evaluation board available
Compact, 3 mm × 3 mm LFCSP
APPLICATIONS
Optical transmitters, up to 11.3 Gbps, for SONET/SDH,
Ethernet, and Fibre Channel applications
SFF/SFP/SFP+/XFP/X2/XENPAK/XPAK MSA compliant
300-pin optical modules, up to 11.3 Gbps
GENERAL DESCRIPTION
The ADN2531 laser diode driver can work with directly
modulated laser diodes, including vertical-cavity surface-emitting
laser (VCSEL), Fabry-Perot (FP) lasers, and distributed feedback
(DFB) lasers, with a differential loading resistance ranging from
5 ? to 140 ?. The active back-termination in the ADN2531
absorbs signal reflections from the laser diode side of the output
transmission lines, enabling excellent optical eye quality even when
the TOSA end of the output transmission lines is significantly
mismatched. The ADN2531 is a SFP+ MSA-compliant device,
and its small package and enhanced ESD protection provides
the optimum solution for compact modules in which laser
diodes are packaged in low pin-count optical subassemblies.
The modulation and bias currents are programmable via the
MSET and BSET control pins. By driving these pins with control
voltages, the user has the flexibility to implement various average
optical power and extinction ratio control schemes, including a
closed-loop or a look-up table control. The automatic laser shut-
down (ALS) feature allows turning the bias on and off while
simultaneously modulating currents by driving the ALS pin with
a low voltage transistor-to-transistor logic (LVTTL) source.
The product is available in a space-saving, 3 mm × 3 mm LFCSP
package and operates from ?40°C to +100°C.
FUNCTIONAL BLOCK DIAGRAM
VCC
VCC
CPA
ALS
VCC
ADN2531
50?
50?
100?
I MOD
IMODP
GND
IMODN
DATAP
DATAN
400?
CROSSPOINT
ADJUST
800?
VCC
IBMON
IBIAS
MSET
200?
GND
BSET
200?
200?
10?
Figure 1.
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 ?2009–2013 Analog Devices, Inc. All rights reserved.
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