参数资料
| 型号： | MAX3643ETG+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 11/15页 |
| 文件大小： | 0K |
| 描述： | IC LASR DRVR 2.5GBPS 3.6V 24TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 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 ~ 3.6 V |
| 电流 - 电源： | 32mA |
| 电流 - 调制： | 85mA |
| 电流 - 偏置： | 70mA |
| 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： | 带卷 (TR) |
| 安装类型： | 表面贴装 |
MAX3643
155Mbps to 2.5Gbps Burst-Mode Laser Driver
BURST-ENABLE (BEN ± ) IN
≤ 125 μ s FOR BPON/GPON
INTERNAL MDIN VOLTAGE SAMPLER
BENOUT OUTPUT
3 μ s
MDOUT
< 2.56mV
1.2V
100 μ s
Figure 2. Sample-and-Hold Timing Diagram
Enable Input
An LVCMOS input, EN , is provided to disable both bias
and modulation currents under external control. The
maximum time to disable laser current with the EN con-
trol is 375ns.
I MOD = I MODSET x 88
To program the laser modulation current using a resis-
tor or digital potentiometer, connect VMSET to VREF,
attach a resistor from the MODSET pin to ground, and
set the current according to:
Setting the Current Limit
A current limiter is provided to protect the laser diode
by shutting down both bias and modulation currents
I MOD =
1 . 2 V
R MODSET + R MOD
× 88
when total current exceeds a value set by the resistor
connected from IMAX to ground. Do not use less than
3k Ω R IMAX . See the I BIAS + I MOD Current Threshold vs.
R IMAX graph in the Typical Operating Characteristics.
Programming the MODSET and
BIASSET Inputs
To program the laser modulation current using a PWM
voltage DAC (requiring a high-impedance load), attach
a DAC output to the VMSET pin, connect a resistor from
the MODSET pin to ground as shown in the Typical
Applications Circuit, and set the current according to:
To program the laser modulation current using a cur-
rent DAC, connect VMSET to VREF, attach the DAC to
the MODSET pin and set the current according to:
Maxim Integrated
I MOD =
V DAC
R MODSET + R MOD
× 88
11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX3643EVKIT | 功能描述:激光驱动器 Evaluation Kit for the MAX3643 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 |
| MAX3643EVKIT+ | 功能描述:激光驱动器 evaluation kit for MAX3643ETG+ 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 |
| MAX3645EEE | 功能描述:限幅放大器 2.97-5.5V 125-200Mbps RoHS:否 制造商:Micrel 输入电压范围（最大值）:3.6 V 工作电源电压:3.3 V 电源电流:40 mA 工作温度范围:- 40 C to + 85 C 封装 / 箱体:MSOP-10 封装:Tube |
| MAX3645EEE+ | 功能描述:限幅放大器 2.97-5.5V 125-200Mbps RoHS:否 制造商:Micrel 输入电压范围（最大值）:3.6 V 工作电源电压:3.3 V 电源电流:40 mA 工作温度范围:- 40 C to + 85 C 封装 / 箱体:MSOP-10 封装:Tube |
| MAX3645EEE+T | 功能描述:限幅放大器 2.97-5.5V 125-200Mbps RoHS:否 制造商:Micrel 输入电压范围（最大值）:3.6 V 工作电源电压:3.3 V 电源电流:40 mA 工作温度范围:- 40 C to + 85 C 封装 / 箱体:MSOP-10 封装:Tube |
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