参数资料
| 型号： | MAX3736ETE+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 7/11页 |
| 文件大小： | 0K |
| 描述： | IC LSR DRVR 3.2GBPS 3.63V 16TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 类型： | 激光二极管驱动器（光纤） |
| 数据速率： | 3.2Gbps |
| 通道数： | 1 |
| 电源电压： | 2.97 V ~ 3.63 V |
| 电流 - 电源： | 22mA |
| 电流 - 调制： | 85mA |
| 电流 - 偏置： | 100mA |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（3x3） |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
3.2Gbps, Low-Power, Compact,
SFP Laser Driver
DIS
V CC
V CC
IN+
IN-
BIAS
50 Ω
V CC
50 Ω
82pF
V CC
16k Ω
24k Ω
7.2k Ω
V CC
OUT+
OUT-
BC_MON
Figure 4. Functional Diagram
1.2V
x1
x85
BIASSET
1.2V
MODSET
x85
MAX3736
Detailed Description
The MAX3736 laser driver consists of three operational
blocks: a bias current generator, a modulation current
generator, and a high-speed modulation path. The
laser-biasing block includes a monitor output for bias-
sensing purposes. Both the bias and modulation gener-
ating blocks are enabled and disabled by the DIS pin.
The high-speed modulation path provides a 100 Ω
differential input resistance.
Bias Current Generator
To maintain constant average optical power, the
MAX3736 is designed to interface to a laser controller
IC. The laser controller IC controls the MAX3736, and
maintains a constant laser power using an automatic
power-control (APC) circuit. A back-facet photodiode,
mounted in the laser package, is used to convert the
optical power into a photocurrent. The laser controller
IC adjusts the laser bias current so the monitor photodi-
ode’s current matches the level programmed by the
user. It does this by adjusting the current sourced by
the MAX3736’s BIASSET pin. The MAX3736 reacts by
increasing or decreasing the laser current at BIAS.
Bias Current Monitor
The MAX3736 features a bias current monitor
(BC_MON). This monitor is realized by mirroring a frac-
tion of the bias current and developing a voltage
across an external resistor connected to ground. For
example, connecting a 100 Ω resistor to ground gives
the following relationship:
V BC_MON = (I BIAS / 73) x 100 Ω . For compliance, the
voltage on BC_MON must be kept below 1.39V.
Modulation Current Generator
The laser’s modulation amplitude can be controlled by
placing a resistor from MODSET to ground. To set the
modulation amplitude, see the I MOD vs. R MODSET
graph in the Typical Operating Characteristics. A more
advanced control scheme employs the use of a laser
controller IC to control modulation current to
stabilize the extinction ratio. For more information on
controlling the extinction ratio, refer to Application
Note 1092: HFAN-02.3.1: Maintaining Average Power
and Extinction Ratio, Part 1, Slope Efficiency and
Threshold Current.
_______________________________________________________________________________________
7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX3736ETE+ | 功能描述:激光驱动器 3.2Gbps Low-Power SFP 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 |
| MAX3736ETE+T | 功能描述:激光驱动器 3.2Gbps Low-Power SFP 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 |
| MAX3736ETE-T | 功能描述:激光驱动器 3.2Gbps Low-Power SFP 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 |
| MAX3736EVKIT | 功能描述:激光驱动器 3.2Gbps Low-Power Compact SFP 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 |
| MAX3737EGJ | 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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