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MAX3940E/D

更新时间： 2024-01-12 19:12:25
品牌 Logo 应用领域
美信 - MAXIM 驱动器
页数 文件大小 规格书
13页 352K
描述
10Gbps EAM Driver with Integrated Bias Network

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MAX3940E/D 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：DIE包装说明：DIE-44
针数：44Reach Compliance Code：not_compliant
HTS代码：8542.39.00.01风险等级：5.87
应用程序：SONET;SDHJESD-30 代码：R-XUUC-N44
JESD-609代码：e0湿度敏感等级：3
负电源额定电压：-5.2 V功能数量：1
端子数量：44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：DIE封装形状：RECTANGULAR
封装形式：UNCASED CHIP峰值回流温度（摄氏度）：240
认证状态：Not Qualified表面贴装：YES
技术：BIPOLAR电信集成电路类型：ATM/SONET/SDH SUPPORT CIRCUIT
温度等级：INDUSTRIAL端子面层：TIN LEAD
端子形式：NO LEAD端子位置：UPPER
处于峰值回流温度下的最长时间：NOT SPECIFIEDBase Number Matches：1

MAX3940E/D 数据手册

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19-2730; Rev 0; 1/03  
10Gbps EAM Driver with Integrated  
Bias Network  
General Description  
Features  
The MAX3940 is designed to drive an electro-absorp-  
tion modulator (EAM) at data rates up to 10.7Gbps. It  
incorporates the functions of a biasing circuit and a  
modulation circuit, with integrated control op amps  
externally programmed by DC voltages.  
ꢀ On-Chip Bias Network  
ꢀ 23ps Edge Speed  
ꢀ Programmable Modulation Voltage Up to 3V  
P-P  
ꢀ Programmable EAM Biasing Voltage Up to 1.25V  
ꢀ Selectable Data-Retiming Latch  
ꢀ Up to 10.7Gbps Operation  
The integrated bias circuit provides a programmable  
biasing current up to 50mA. This bias current reflects a  
bias voltage of up to 1.25V on an external 50Ω load. The  
bias and modulation circuits are internally connected on  
chip, eliminating the need for an external bias inductor.  
ꢀ Integrated Modulation and Biasing Functions  
ꢀ 50Ω On-Chip Input and Output Terminations  
ꢀ Pulse-Width Adjustment  
A high-bandwidth, fully differential signal path is internally  
implemented to minimize jitter accumulation. When a  
clock signal is available, the integrated data-retiming  
function can be selected to reject input-signal jitter.  
ꢀ Enable and Polarity Controls  
ꢀ ESD Protection  
The MAX3940 receives differential CML signals (ground  
referenced) with on-chip line terminations of 50Ω. The  
output has a 50Ω resistor for back termination and is  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
able to deliver a modulation current of 40mA  
to  
P-P  
MAX3940E/D  
-40°C to +85°C  
Dice*  
120mA , with an edge speed of 23ps (typical, 20% to  
P-P  
*Dice are designed to operate over a -40°C to +120°C junction  
temperature (T ) range, but are tested and guaranteed at  
80%). This modulation current reflects an EAM modula-  
J
tion voltage of 1.0V  
to 3.0V  
.
P-P  
P-P  
T
A
= +25°C only.  
The MAX3940 also includes an adjustable pulse-width  
control circuit to precompensate for asymmetrical EAM  
characteristics.  
Applications  
SONET OC-192 and SDH STM-64 Transmission  
Systems  
DWDM Systems  
Long/Short-Reach Optical Transmitters  
10Gbps Ethernet  
Typical Application Circuit  
-5.2V  
PLRT  
MODEN  
RTEN  
GND  
0.01µF  
50Ω  
50Ω  
DATA+  
DATA-  
DATA+  
DATA-  
EAM  
0.01µF  
MAX3952  
10Gbps  
SERIALIZER  
MAX3940  
0.01µF  
0.01µF  
50Ω  
50Ω  
CLK+  
CLK-  
CLK+  
50Ω  
OUT  
CLK-  
PWC+  
PWC-  
MODSET BIASSET  
V
EE  
2kΩ  
+
+
V
V
MODSET  
-
BIASSET  
-
-5.2V  
330pF  
0.1µF  
-5.2V  
-5.2V  
REPRESENTS A CONTROLLED-IMPEDANCE TRANSMISSION LINE.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
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