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MAX3646ETGT

更新时间： 2024-02-16 08:41:54
品牌 Logo 应用领域
美信 - MAXIM 驱动器
页数 文件大小 规格书
15页 296K
描述
155Mbps to 622Mbps SFF/SFP Laser Driver with Extinction Ratio Control

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MAX3646ETGT 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：QFN
包装说明：HVQCCN, LCC24,.16SQ,20针数：24
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：6 weeks
风险等级：2.07Samacsys Description：MAXIM INTEGRATED PRODUCTS - MAX3646ETG+T - Laser Diode Driver, SFP/SFF Optical Modules, 3.3V Supply, TQFN-24
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：1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：0.8 mm
子类别：Display Drivers最大供电电压：3.63 V
最小供电电压：2.97 V标称供电电压：3.3 V
表面贴装：YES技术：BIPOLAR
温度等级：INDUSTRIAL端子面层：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：NOT SPECIFIED
宽度：4 mm

MAX3646ETGT 数据手册

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19-3161; Rev 2; 6/11  
155Mbps to 622Mbps SFF/SFP  
Laser Driver with Extinction Ratio Control  
MAX346  
General Description  
Features  
The MAX3646 is a +3.3V laser driver designed for mul-  
tirate transceiver modules with data rates from  
155Mbps to 622Mbps. Lasers can be DC-coupled to  
the MAX3646 for reduced component count and ease  
of multirate operation.  
♦ Single +3.3V Power Supply  
♦ 47mA Power-Supply Current  
♦ 85mA Modulation Current  
♦ 100mA Bias Current  
♦ Automatic Power Control (APC)  
♦ Modulation Compensation  
♦ On-Chip Temperature Compensation  
♦ Self-Biased Inputs for AC-Coupling  
♦ Ground-Referenced Current Monitors  
♦ Laser Shutdown and Alarm Outputs  
Laser extinction ratio control (ERC) combines the features  
of automatic power control (APC), modulation compensa-  
tion, and built-in thermal compensation. The APC loop  
maintains constant average optical power. Modulation  
compensation increases the modulation current in pro-  
portion to the bias current. These control loops, com-  
bined with thermal compensation, maintain a constant  
optical extinction ratio over temperature and lifetime.  
The MAX3646 accepts differential data input signals.  
The wide 5mA to 60mA (up to 85mA AC-coupled) mod-  
ulation current range and up to 100mA bias current  
range, make the MAX3646 ideal for driving FP/DFB  
lasers in fiber optic modules. External resistors set the  
required laser current levels. The MAX3646 provides  
transmit disable control (TX_DISABLE), single-point  
fault tolerance, bias-current monitoring, and photocur-  
rent monitoring. The device also offers a latched failure  
output (TX_FAULT) to indicate faults, such as when the  
APC loop is no longer able to maintain the average  
optical power at the required level. The MAX3646 is  
compliant with the SFF-8472 transmitter diagnostic and  
SFP MSA timing requirements.  
♦ Enable Control and Laser Safety Feature  
Ordering Information  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
24 Thin QFN-EP*  
24 Thin QFN-EP*  
24 Thin QFN-EP*  
24 Thin QFN-EP*  
MAX3646ETG  
MAX3646ETG-T  
MAX3646ETG+  
MAX3646ETG+T  
+Denotes a lead-free/RoHS-compliant package.  
*EP = Exposed pad.  
T = Tape and reel.  
The MAX3646 is offered in a 4mm x 4mm, 24-pin thin  
QFN package and operates over the extended -40°C to  
+85°C temperature range.  
Pin Configuration  
Applications  
Multirate OC-3 to OC-12 FEC Transceivers  
TOP VIEW  
125Mbps Ethernet SFP, GBIC, and 1 x 9  
Transceivers  
24 23 22 21 20 19  
1
2
3
4
5
6
MODTCOMP  
18  
17  
MD  
V
CC  
V
CC  
IN+  
IN-  
16 OUT+  
MAX3646  
OUT-  
15  
14  
13  
V
CC  
V
CC  
Typical Application Circuit appears at end of data sheet.  
*EP  
BIAS  
TX_DISABLE  
7
8
9
10 11 12  
*THE EXPOSED PADDLE MUST BE SOLDERED TO SUPPLY  
GROUND ON THE CIRCUIT BOARD.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  
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