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参数资料
| 型号： | MAX3738ETG+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 9/16页 |
| 文件大小： | 0K |
| 描述： | IC LASER DRIVER 4.25GBPS 24TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 75 |
| 类型： | 激光二极管驱动器（光纤） |
| 数据速率： | 4.25Gbps |
| 通道数： | 1 |
| 电源电压： | 2.97 V ~ 3.63 V |
| 电流 - 电源： | 47mA |
| 电流 - 调制： | 85mA |
| 电流 - 偏置： | 100mA |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 24-WFQFN 裸露焊盘 |
| 供应商设备封装： | 24-TQFN-EP（4x4） |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
| 产品目录页面： | 1423 (CN2011-ZH PDF) |
155Mbps to 4.25Gbps SFF/SFP Laser Driver
with Extinction Ratio Control
V CC
SHUTDOWN
MAX3738
INPUT BUFFER
IN+
DATA
OUT-
IN-
PATH
OUT+
R D
I MOD
SHUTDOWN
ENABLE
I MOD
TX_FAULT
TX_DISABLE
SAFETY LOGIC
AND
POWER DETECTOR
I BIAS
ENABLE
V CC
BIAS
I BIAS
R PULL = 45k Ω
I MD
1
V CC
I BIAS
V REF
APCSET
R APCSET
PC_MON
x1/2
R PC_MON
I BIAS
xTC
x268
xK
I APCSET
MD
BC_MON
R BC_MON
82
T > T TH
T
x1
I MD
C MD
V REF
TH_TEMP
R TH_TEMP
MODTCOMP
R MODTCOMP
MODSET
R MODSET
MODBCOMP
APCFILT1
R MODBCOMP
APCFILT2
C APC
Figure 4. Functional Diagram
Average power is regulated using APC, which keeps
constant current from a photodiode coupled to the
laser. Peak-to-peak power is maintained by compen-
sating the modulation current for reduced slope effi-
ciency ( η ) of laser over time and temperature:
P AVG = I MD / ρ MON
P P-P = η x I MOD
Modulation compensation from bias increases the mod-
ulation current by a user-selected proportion (K) needed
to maintain peak-to-peak laser power as bias current
increases with temperature. Refer to Application Note
1119: HFAN-02.2.1: Maintaining the Extinction Ratio of
Optical Transmitters Using K-Factor Control for details:
K = Δ I MOD / Δ I BIAS
This provides a first-order approximation of the current
increase needed to maintain peak-to-peak power.
Slope efficiency decreases more rapidly as tempera-
ture increases. The MAX3738 provides additional tem-
perature compensation as temperature increases past
a user-defined threshold (T TH ).
_______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX3738ETG+ | 功能描述:激光驱动器 155-4.25Gbps SFF/SFP w/Extinction RC RoHS:否 制造商:Micrel 数据速率:4.25 Gbps 工作电源电压:3 V to 3.6 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:QFN-16 封装:Tube |
| MAX3738ETG+GD0 | 功能描述:激光驱动器 155Mbps to 4.25Gbps SFF/SFP Laser Driver with Extinction Ratio Control RoHS:否 制造商:Micrel 数据速率:4.25 Gbps 工作电源电压:3 V to 3.6 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:QFN-16 封装:Tube |
| MAX3738ETG+T | 功能描述:激光驱动器 155-4.25Gbps SFF/SFP w/Extinction RC RoHS:否 制造商:Micrel 数据速率:4.25 Gbps 工作电源电压:3 V to 3.6 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:QFN-16 封装:Tube |
| MAX3738ETG+TGD0 | 功能描述:激光驱动器 155Mbps to 4.25Gbps SFF/SFP Laser Driver with Extinction Ratio Control RoHS:否 制造商:Micrel 数据速率:4.25 Gbps 工作电源电压:3 V to 3.6 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:QFN-16 封装:Tube |
| MAX3738ETG-T | 功能描述:激光驱动器 RoHS:否 制造商:Micrel 数据速率:4.25 Gbps 工作电源电压:3 V to 3.6 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:QFN-16 封装:Tube |
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