参数资料
| 型号： | MAX3766EEP+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 15/20页 |
| 文件大小： | 0K |
| 描述： | IC LASR DRVR 622MBPS 5.5V 20QSOP |
| 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： | 622Mbps |
| 通道数： | 1 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 电流 - 电源： | 25mA |
| 电流 - 调制： | 60mA |
| 电流 - 偏置： | 80mA |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 20-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 20-QSOP |
| 包装： | 带卷 (TR) |
| 安装类型： | 表面贴装 |
622Mbps LAN/WAN Laser Driver with
Automatic Power Control and Safety Shutdown
V CC
V CC
PECL
OUTPUT
IN
MAX3766
5.1k
50 ?
V CC - 2V
V CC
V CC
RF OR NON-
PECL OUTPUT
68 ?
IN
MAX3766
FAIL
5.1k
100k
RESET
LASER
OUT+
180 ?
V CC
FAIL
MAX3766
TTL OR
CMOS OUTPUT
R1
10k ?
R3
11.8k
R2
2.87k
IN
MAX3766
Figure 10. External Laser Shutdown Circuit
2) Low-frequency oscillation on the bias-current
output.
Ensure C MD ≥ 0.1μF.
3) Modulation driver is not needed.
SINGLE-ENDED TERMINATION IS SHOWN. THE OTHER INPUT SHOULD BE
TERMINATED SIMILARLY, OR CONNECTED TO V CC - 1.3V.
Figure 9. Input Terminations
Layout Considerations
The MAX3766 is a high-frequency product. The perfor-
mance of the circuit is largely dependent upon the lay-
out of the circuit board.
Use a multilayer circuit board with a dedicated ground
plane. Use short laser package leads placed close to
OUT+ and OUT- to keep output inductance low. Power
supplies should be capacitively bypassed to the
ground plane with surface-mount capacitors placed
near the power-supply pins.
Solutions to Common Problems
1) Laser output is ringing and contains overshoot.
This is often caused by inductive laser packaging.
Try reducing the lead length of the laser pins. Modify
the compensation network to reduce the driver’s out-
put edge speed (see Design Procedure ). This prob-
lem can also occur if the voltage at OUT+, OUT-, or
BIAS is below V CC - 2.5V. Test this by increasing the
supply voltage, or reducing the modulation current.
If only the bias-current driver and safety circuits are
needed, connect IN+ to V CC , and leave IN- uncon-
nected. Connect OUT+ and OUT- to the supply.
Leave MOD, TC, and REF2 unconnected.
4) APC is not needed.
If only the high-speed modulation driver is used,
connect BIAS to V CC , and leave POWERSET, MD,
FAIL , and BIASMAX unconnected. Connect SAFETY
to ground.
5) Laser edge switching speed is low.
Refer to the Design Bias Filter section. It may be
necessary to select L BIAS with a higher self-resonat-
ing frequency.
Wire Bonding Die
The MAX3766 uses bondpads with gold metalization.
Make connections to the die with gold wire only, using
ball bonding techniques. Wedge bonding is not recom-
mended. Pad size is 4 mils (0.1mm) square. Die thick-
ness is typically 15 mils (0.38mm).
Interface Models
Figure 11 shows typical models for the inputs and out-
puts of the MAX3766, including package parasitics. If
dice are used, replace the package parasitic elements
with bondwire parasitic elements.
______________________________________________________________________________________
15
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX3766EVKIT | 功能描述:激光驱动器 Evaluation Kit for the MAX3766 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 |
| MAX3768C/D | 功能描述:限幅放大器 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 |
| MAX3768CUB | 功能描述:限幅放大器 3-5.5V 1.25/2.5Gbps 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 |
| MAX3768CUB+ | 功能描述:限幅放大器 3-5.5V 1.25/2.5Gbps 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 |
| MAX3768CUB+T | 功能描述:限幅放大器 3-5.5V 1.25/2.5Gbps 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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