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参数资料
| 型号： | MAX3996CTP+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 11/16页 |
| 文件大小： | 0K |
| 描述： | IC LASR DRVR 2.5GBPS 5.5V 20TQFN |
| 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： | 2.5Gbps |
| 通道数： | 1 |
| 电源电压： | 3 V ~ 5.5 V |
| 电流 - 电源： | 52mA |
| 电流 - 调制： | 40mA |
| 电流 - 偏置： | 60mA |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 20-WFQFN 裸露焊盘 |
| 供应商设备封装： | 20-TQFN-EP（4x4） |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
3.0V to 5.5V, 2.5Gbps VCSEL
and Laser Driver
Determine Modulator Configuration
The MAX3996 can be used in several configurations.
1000
500ppm
For modulation currents less than 20mA, Maxim recom-
mends the configuration shown in the Typical
1000ppm
1500ppm
2000ppm
2500ppm
Application Circuit . Outputs greater than 20mA could
cause the voltage at the modulator output to be less
than V CC - 1V, which might degrade laser output. For
large currents, Maxim recommends the configuration in
10
3000ppm
3500ppm
5mA
Figure 9. A differential configuration is in Figure 10.
Designing the Bias Filter and
Output Pullup Beads
To reduce deterministic jitter, add a ferrite bead induc-
10mA
15mA
20mA
25mA
tor (L1) between the BIAS pin and the cathode of the
laser. Select L1 to have an impedance >100 ? between
f = 10MHz and f = 2GHz, and a DC resistance < 3 ? ;
Maxim recommends the Murata BLM11HA102SG.
These inductors are also desirable for connecting the
OUT+ and OUT- pins to V CC .
R L = 25?
30mA
Programming Laser Power and
1
1
10
R MOD (k ? )
100
1000
Bias Fault Threshold
The IC is designed to drive a common anode laser with
a photodiode. A servo-control loop is formed by the
Figure 8. R TC vs. R MOD for Various Conditions
OPTIONAL SHUTDOWN
CIRCUITRY
V CC
internal NPN bias-driving transistor, the laser diode, the
monitor diode (R SET ), and the power-control amplifier
(Figure 11). The voltage at MD is stabilized to 1.1V. The
V CC
V CC
V CC
1.8k ?
L2*
V CC
TX_DISABLE
V CC
SHDNDRV
0.01 μ F
TX_DISABLE
V CC
SHDNDRV
L2*
0.01 μ F
OUT+
0.01 μ F
FAULT
0.01 μ F
FAULT
IN+
OUT-
V CC
L3*
0.01 μ F
IN+
MAX3996
OUT-
0.01 μ F
0.01 μ F
IN-
MAX3996
OUT+
0.01 μ F
L1*
0.01 μ F
IN-
L1*
25 ?
PORDLY
BIAS
PORDLY
BIAS
TC MODSET MON1 MON2 COMP GND
MD
TC
MODSET MON1 MON2 COMP GND
MD
C PORDLY
C PORDLY
R TC
R MOD
N.C.
C COMP
R SET
R TC
R MOD
N.C.
C COMP
R SET
*FERRITE BEAD
Figure 9. Large Modulation Current
*FERRITE BEAD
Figure 10. Differential Configuration
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX3996CTP+ | 功能描述:激光驱动器 3-5.5V 2.5Gbps VCSEL & Laser Driver 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 |
| MAX3996CTP+D | 制造商:Maxim Integrated Products 功能描述:LASER DRVR VCSEL 2.5GBPS 1CH 20TQFN - Rail/Tube |
| MAX3996CTP+T | 功能描述:激光驱动器 3-5.5V 2.5Gbps VCSEL & Laser Driver 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 |
| MAX3996CTP+TD | 制造商:Maxim Integrated Products 功能描述:LASER DRVR VCSEL 2.5GBPS 1CH 20TQFN - Tape and Reel |
| MAX3996EVKIT | 功能描述:激光驱动器 Evaluation Kit for the MAX3996 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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