参数资料
| 型号： | MAX3967AETG+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 7/14页 |
| 文件大小： | 0K |
| 描述： | IC SFP LED DRVR 24-TQFN |
| 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，用于光纤模块 |
| 数据速率： | 270Mbps |
| 通道数： | 1 |
| 电源电压： | 2.97 V ~ 5.5 V |
| 电流 - 电源： | 30mA |
| 电流 - 调制： | 可调式 |
| 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 |
270Mbps SFP LED Driver
INPUT
TX_DISABLE
MAX3967A
VCCOUT
OUT-
IN+
BUFFER
0
1
COMPLEMENTARY
5 ?
OUTPUT
IN-
0
24X
MAIN
OUTPUT
RPREBIAS
78 ?
MODULATION-
CURRENT
GAIN 4X
24X
OUT+
GENERATOR
V CC
35 ?
REFERENCE-VOLTAGE GENERATOR
12pF
1.2V
V
PREBIAS-CURRENT
TEMP
50 ?
GENERATOR
TCMIN
TCNOM
TC
MODSET
RMODSET
MON
PB1
PB2
PB3
Figure 2. Functional Diagram
Modulation-Current Generator
The modulation-current generator circuit provides con-
trol of the modulation-current amplitude. This amplitude
is determined by the voltage at the MODSET pin and
external resistor R MODSET.
Do not connect bypass capacitors at the MODSET pin.
Capacitance at this pin increases high-frequency out-
put noise. The MON pin provides an optional modula-
tion-current monitor. The current sourced from the MON
pin is 1/96 of the modulation current. If used, the pin
should be connected to V EE through a resistor. The
resistance must be chosen so the voltage on MON
does not exceed 1.1V. If not used, leave MON open.
Prebias Current Generator
A prebias voltage (V PREBIAS ) can be applied to the
LED to improve switching speed. The prebias current
generator creates a current that flows through the 78 ?
prebias resistor in the output stage, creating a prebias
voltage. The prebias voltage can be adjusted by selec-
tively connecting pins PB1, PB2, and PB3 to V EE . Table 1
describes the functions of PB1, PB2, and PB3.
Output Current Drivers
The modulation-current reference is switched and
amplified by the output stages.
LED package lead inductance causes ringing and
overshoot, which can be compensated with an RC filter
network. The MAX3967A includes 35 ? and 12pF of
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX3967AEVKIT | 功能描述:LED 照明开发工具 Evaluation Kit for the MAX3967A RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装: |
| MAX3967E/D DIE | 制造商:Maxim Integrated Products 功能描述: |
| MAX3967ETG | 制造商:Maxim Integrated Products 功能描述:270MBPS SFP LED DRIVER - Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
| MAX3967ETG+ | 制造商:Maxim Integrated Products 功能描述:LED DRVR 2.97V TO 5.5V 24TQFN - Bulk |
| MAX3967ETG+T | 制造商:Maxim Integrated Products 功能描述:LED DRVR 2.97V TO 5.5V 24TQFN - Tape and Reel |
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