参数资料
| 型号： | MAX3869ETJ+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 8/15页 |
| 文件大小： | 0K |
| 描述： | IC LASER DRIVR 2CHAN 5.5V 32TQFP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 类型： | 激光二极管驱动器（光纤） |
| 数据速率： | 2.5Gbps |
| 通道数： | 2 |
| 电源电压： | 3.14 V ~ 5.5 V |
| 电流 - 电源： | 64mA |
| 电流 - 调制： | 60mA |
| 电流 - 偏置： | 100mA |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
+3.3V, 2.5Gbps SDH/SONET Laser Driver
with Current Monitors and APC
V CC
LATCH
L P2
L P1
R P
MAX3869
OUT+
R D
0
MUX
I MOD
C D
DATA
D
Q
1
OUT-
CLK
25 ?
V CC
ENABLE
BIASMON
I BIAS
BIAS
I BIAS
165x
40x
37
5x
MOBMON
I MOD
29
FAILURE
DETECTOR
I MD
MD
1000pF
MODSET
BIASMAX
CAPC
APCSET
FAIL
R MODSET
R BIASMAX
C APC
R APCSET
Figure 4. Functional Diagram
laser package is used to convert the optical power into
a photocurrent. The APC loop adjusts the laser bias
current so that the monitor current is matched to a ref-
erence current set by R APCSET . The time constant of
the APC loop is determined by an external capacitor
(C APC ). To eliminate the pattern-dependent jitter asso-
ciated with the APC loop-time constant, and to guaran-
tee loop stability, the recommended value for C APC is
0.1μF.
When the APC loop is functioning, the maximum allow-
able bias current is set by an external resistor, R BIASMAX .
An APC failure flag ( FAIL ) is set low when the bias current
can no longer be adjusted to achieve the desired aver-
age optical power. To filter out the APC loop noise, use
an external capacitor at APCFILT with a recommended
value of 0.1μF.
APC closed-loop operation requires the user to set three
currents with external resistors connected between
ground and BIASMAX, MODSET, and APCSET. Detailed
guidelines for these resistor settings are described in
the Design Procedure section.
Open-Loop Operation
If necessary, the MAX3869 is fully operational without
APC. In this case, the laser current is directly set by two
external resistors connected from ground to BIASMAX
and MODSET. See the Design Procedure section for
more details on open-loop operation.
8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX3869ETJ+ | 功能描述:激光驱动器 3.3V 2.5Gbps SDH/ SONET 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 |
| MAX3869ETJ+D | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX3869ETJ+T | 功能描述:激光驱动器 3.3V 2.5Gbps SDH/ SONET 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 |
| MAX3869EVKIT | 功能描述:激光驱动器 Evaluation Kit for the MAX3869 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 |
| MAX3872AETJ+ | 功能描述:计时器和支持产品 Multirate Clock and Data Recovery with Limiting Amplifier RoHS:否 制造商:Micrel 类型:Standard 封装 / 箱体:SOT-23 内部定时器数量:1 电源电压-最大:18 V 电源电压-最小:2.7 V 最大功率耗散: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Reel |
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