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ADN2871

更新时间： 2024-02-23 12:25:11
品牌 Logo 应用领域
亚德诺 - ADI 驱动器二极管激光二极管
页数 文件大小 规格书
20页 798K
描述
3.3 V, 50 Mbps to 4.25 Gbps Single-Loop Laser Diode Driver

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ADN2871 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：QFN
包装说明：HVQCCN, LCC24,.16SQ,20针数：24
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.13
接口集成电路类型：INTERFACE CIRCUITJESD-30 代码：S-XQCC-N24
JESD-609代码：e3长度：4 mm
湿度敏感等级：3功能数量：1
端子数量：24最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：UNSPECIFIED
封装代码：HVQCCN封装等效代码：LCC24,.16SQ,20
封装形状：SQUARE封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：260电源：3.3 V
认证状态：Not Qualified座面最大高度：1 mm
子类别：Display Drivers最大供电电压：3.6 V
最小供电电压：3 V标称供电电压：3.3 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：NO LEAD
端子节距：0.5 mm端子位置：QUAD
处于峰值回流温度下的最长时间：40宽度：4 mm
Base Number Matches：1

ADN2871 数据手册

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3.3 V, 50 Mbps to 4.25 Gbps  
Single-Loop Laser Diode Driver  
ADN2871  
FEATURES  
GENERAL DESCRIPTION  
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  
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.  
4 mm × 4 mm LFCSP  
Voltage setpoint control  
Resistor setpoint control  
Pin-compatible with ADN2870  
APPLICATIONS  
The product is available in a space-saving 4 mm × 4 mm LFCSP  
specified over the −40°C to +85°C temperature range.  
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  
Figure 1 shows an application diagram of the voltage setpoint  
control with single-ended laser interface. Figure 36 shows a  
differential laser interface.  
V
CC  
V
V
CC  
L
CC  
Tx_DISABLE  
Tx_FAULT  
V
CC  
V
CC  
FAIL  
ALS  
IMODN  
LASER  
R
MPD  
IMODP  
DATAP  
DATAN  
PAVSET  
ADI  
MICROCONTROLLER  
100Ω  
CONTROL  
PAVREF  
RPAV  
DAC  
ADC  
IBIAS  
×100  
IMOD  
1kΩ  
GND  
CCBIAS  
ERREF  
ERSET  
DAC  
ADN2871  
1kΩ  
GND  
IBMON  
IMMON  
PAVCAP  
NC  
V
GND  
CC  
GND  
1kΩ  
470Ω  
GND  
GND  
Figure 1. Application Diagram of Voltage Setpoint Control with Single-Ended Laser Interface  
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  
Fax: 781.461.3113  
www.analog.com  
© 2005 Analog Devices, Inc. All rights reserved.  
 
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